private static void DemoOptionalParams(Person p1)
{
// Exercise: Create a method with optional parameters
p1.OptionalParameters();
p1.OptionalParameters("Jump!", 98.5);
p1.OptionalParameters(number: 52.7, command: "Hide!");
p1.OptionalParameters("Poke!", active: false);
}
static void Main(string[] args)
{
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
bob.BuckedList = WondersOfTheAncientWorld.HangingGardensOfBabylon | WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine(format: "{0} was born on {1:dddd, d MMMM yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth);
WriteLine(format: "{0}'s favorite wonder is {1}. Its integer is {2}",
arg0: bob.Name,
arg1: bob.FavoriteAncientWonder,
arg2: (int)bob.FavoriteAncientWonder);
WriteLine($"{bob.Name}'s bucket list is {bob.BuckedList}");
WriteLine($"{bob.Name} has {bob.Children.Count} children:");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine($" {bob.Children[child].Name}");
}
BankAccount.InterestRate = 0.012M;
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.InterestRate);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Mrs. Gerrier";
gerrierAccount.Balance = 98;
WriteLine(format: "{0} earned {1:C} interest",
arg0: gerrierAccount.AccountName,
arg1: gerrierAccount.Balance * BankAccount.InterestRate);
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} was born on {bob.HomePlanet}");
var blankPerson = new Person();
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated);
var gunny = new Person("Gunny", "Mars");
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated);
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
var fruitNamed = bob.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}");
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children");
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
WriteLine(bob.OptionalParameters(number: 52.7, command: "Hide!"));
WriteLine(bob.OptionalParameters("Poke!", active: false));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Befire a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
var sam = new Person {
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
object[] passengers =
{
new FirstClassPassenger {
AirMiles = 1_419
},
static void Main(string[] args)
{
Person bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 2);
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia | WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
WriteLine(format: "{0} was born on {1:dddd, dd MMMM yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth);
WriteLine(format: "{0}'s favorite wonder is {1}. Its byte is {2}.",
arg0: bob.Name,
arg1: bob.FavoriteAncientWonder,
arg2: (byte)bob.FavoriteAncientWonder);
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{bob.Name} has {bob.Children.Count} children:");
foreach (Person child in bob.Children)
{
WriteLine($"\t- {child.Name}");
}
WriteLine($"{bob.Name} is a {Person.Species}.");
WriteLine($"{bob.Name} was born on {bob.HomePlanet}.");
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
(string Name, int Number)namedFruit = bob.GetNamedFruit();
WriteLine($"There are {namedFruit.Number} {namedFruit.Name}.");
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName} and {fruitNumber}.");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
WriteLine(bob.OptionalParameters(number: 52.7, command: "Hide!"));
WriteLine(bob.OptionalParameters(command: "Poke!", active: false));
Person alice = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
WriteLine(format: "{0} was born on {1:dd MMM yy}",
arg0: alice.Name,
arg1: alice.DateOfBirth);
BankAccount.InterestRate = 0.012M;
BankAccount jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.InterestRate);
BankAccount gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: gerrierAccount.AccountName,
arg1: gerrierAccount.Balance * BankAccount.InterestRate);
Person blankPerson = new Person();
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated
);
Person gunny = new Person("Gunny", "Mars");
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated
);
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}.");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}.");
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f does not exist yet.");
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}.");
Person sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"{sam.Name}'s favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"{sam.Name}'s favorite primary color is {sam.FavoritePrimaryColor}.");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"{sam.Name}'s first child is {sam.Children[0].Name}.");
WriteLine($"{sam.Name}'s second child is {sam.Children[1].Name}.");
WriteLine($"{sam.Name}'s first child is {sam[0].Name}.");
WriteLine($"{sam.Name}'s second child is {sam[1].Name}.");
object [] passengers =
{
new FirstClassPassenger {
AirMiles = 1_419
},
static void Main(string[] args)
{
var p1 = new Person();
p1.Name = "Bob Smith";
p1.DateOfBirth = new System.DateTime(1965, 12, 22);
WriteLine($"{p1.Name} was born on {p1.DateOfBirth:dddd, d MMMM yyyy}");
var p2 = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 17)
};
WriteLine($"{p2.Name} was born on {p2.DateOfBirth:d MMM yy}");
p1.BucketList = WondersOfTheAncientWorld.HangingGardenOfBabylon |
WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
// p1.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{p1.Name}'s bucket list is {p1.BucketList}");
p1.Children.Add(new Person {
Name = "Alfred"
});
p1.Children.Add(new Person {
Name = "Zoe"
});
WriteLine(
$"{p1.Name} has {p1.Children.Count} children:"
);
for (int child = 0; child < p1.Children.Count; child++)
{
WriteLine($" {p1.Children[child].Name}");
}
BankAccount.InterestRate = 0.012M;
var ba1 = new BankAccount();
ba1.AccountName = "Mrs. Jones";
ba1.Balance = 2400;
WriteLine($"{ba1.AccountName} earned {ba1.Balance * BankAccount.InterestRate:C} interest.");
var ba2 = new BankAccount();
ba2.AccountName = "Ms. Gerrier";
ba2.Balance = 98;
WriteLine($"{ba2.AccountName} earned {ba2.Balance * BankAccount.InterestRate:C} interest.");
WriteLine($"{p1.Name} is a {Person.Species}");
// WriteLine($"{p1.Name} is a {p1.Species}");
WriteLine($"{p1.Name} was born on {p1.HomePlanet}");
var p3 = new Person();
WriteLine($"{p3.Name} was instantiated at {p3.Instantiated:hh:mm:ss} on {p3.Instantiated:dddd, d MMMM yyyy}");
var p4 = new Person("Aziz");
WriteLine($"{p4.Name} was instantiated at {p4.Instantiated:hh:mm:ss} on {p4.Instantiated:dddd, d MMMM yyyy}");
p1.WriteToConsole();
WriteLine(p1.GetOrigin());
Tuple <string, int> fruit4 = p1.GetFruitCS4();
WriteLine($"There are {fruit4.Item2} {fruit4.Item1}.");
(string, int)fruit7 = p1.GetFruitCS7();
WriteLine($"{fruit7.Item1}, {fruit7.Item2} there are.");
var fruitNamed = p1.GetNamedFruit();
WriteLine($"Are there {fruitNamed.Number} {fruitNamed.Name}?");
var thing1 = ("Neville", 4);
WriteLine(
$"{thing1.Item1} has {thing1.Item2} children."
);
var thing2 = (p1.Name, p1.Children.Count);
WriteLine(
$"{thing2.Name} has {thing2.Count} children."
);
(string fruitName, int fruitNumber) = p1.GetFruitCS7();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
WriteLine(p1.SayHello());
WriteLine(p1.SayHello("Emily"));
WriteLine(p1.OptionalParameters());
WriteLine(p1.OptionalParameters("Jump!", 98.5));
WriteLine(p1.OptionalParameters(number: 52.7, command: "Hide!"));
WriteLine(p1.OptionalParameters("Poke!", active: false));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
p1.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
// simplified C# 7 syntax for out parameters
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn't exist yet!");
p1.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
var harry = new Person {
Name = "Harry"
};
var mary = new Person {
Name = "Mary"
};
var jill = new Person {
Name = "Jill"
};
// call instance method
var baby1 = mary.ProcreateWith(harry);
// call static method
var baby2 = Person.Procreate(harry, jill);
// call an operator
var baby3 = harry * mary;
WriteLine($"{mary.Name} has {mary.Children.Count} children.");
WriteLine($"{harry.Name} has {harry.Children.Count} children.");
WriteLine($"{jill.Name} has {jill.Children.Count} children.");
WriteLine($"{mary.Name}'s first child is named \"{mary.Children[0].Name}\".");
WriteLine($"5! is {Person.Factorial(5)}");
harry.Shout += Harry_Shout;
harry.Poke();
harry.Poke();
harry.Poke();
harry.Poke();
Person[] people =
{
new Person {
Name = "Simon"
},
new Person {
Name = "Jenny"
},
new Person {
Name = "Adam"
},
new Person {
Name = "Richard"
}
};
WriteLine("Initial list of people:");
foreach (var person in people)
{
WriteLine($"{person.Name}");
}
WriteLine("Use Person's IComparable implementation to sort:");
Array.Sort(people);
foreach (var person in people)
{
WriteLine($"{person.Name}");
}
WriteLine("use PersonComparer's IComparer implementation to sort:");
Array.Sort(people, new PersonComparer());
foreach (var person in people)
{
WriteLine($"{person.Name}");
}
var t = new Thing();
t.Data = 42;
WriteLine($"Thing: {t.Process("42")}");
var gt = new GenericThing <int>();
gt.Data = 42;
WriteLine($"GenericThing: {gt.Process("42")}");
string number1 = "4";
WriteLine($"{number1} squared is {Squarer.Square<string>(number1)}");
byte number2 = 3;
WriteLine($"{number2} squared is {Squarer.Square<byte>(number2)}");
var dv1 = new DisplacementVector(3, 5);
var dv2 = new DisplacementVector(-2, 7);
var dv3 = dv1 + dv2;
WriteLine($"({dv1.X}, {dv1.Y}) + ({dv2.X}, {dv2.Y}) = ({dv3.X}, {dv3.Y})");
Employee e1 = new Employee
{
Name = "John Jones",
DateOfBirth = new DateTime(1990, 7, 28)
};
e1.WriteToConsole();
e1.EmployeeCode = "JJ001";
e1.HireDate = new DateTime(2014, 11, 23);
WriteLine($"{e1.Name} was hired on {e1.HireDate:dd/MM/yy}");
WriteLine(e1.ToString());
Employee aliceInEmployee = new Employee {
Name = "Alice", EmployeeCode = "AA123"
};
Person aliceInPerson = aliceInEmployee;
aliceInEmployee.WriteToConsole();
aliceInPerson.WriteToConsole();
WriteLine(aliceInEmployee.ToString());
WriteLine(aliceInPerson.ToString());
if (aliceInPerson is Employee)
{
WriteLine($"{nameof(aliceInPerson)} IS an Employee");
Employee e2 = (Employee)aliceInPerson;
// do something with e2
}
Employee e3 = aliceInPerson as Employee;
if (e3 != null)
{
WriteLine($"{nameof(aliceInPerson)} AS an Employee");
// do something with e3
}
try
{
e1.TimeTravel(new DateTime(1999, 12, 31));
e1.TimeTravel(new DateTime(1950, 12, 25));
}
catch (PersonException ex)
{
WriteLine(ex.Message);
}
string email1 = "*****@*****.**";
string email2 = "ian&test.com";
WriteLine($"{email1} is a valid e-mail address: {email1.isValidEmail()}.");
WriteLine($"{email2} is a valid e-mail address: {email2.isValidEmail()}.");
}
static void Main(string[] args)
{
Person bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
WriteLine(
format: "{0} was born on {1: dddd, d MMMM yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth
);
WriteLine(
format: "{0} was born on {1: dd MMM yy}",
arg0: bob.Name,
arg1: bob.DateOfBirth
);
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine(
format: "{0}'s favorite wonder is {1}. It's integer is {2}.",
arg0: bob.Name,
arg1: bob.FavoriteAncientWonder,
arg2: (int)bob.FavoriteAncientWonder
);
bob.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon
| WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
WriteLine($"{bob.Name}'s bucket list is {bob.BucketList}");
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{bob.Name} has {bob.Children.Count} children:");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine($"{bob.Children[child].Name}");
}
BankAccount.InterestRate = 0.012M;
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.InterestRate);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: gerrierAccount.AccountName,
arg1: gerrierAccount.Balance * BankAccount.InterestRate);
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} was born on {bob.HomePlanet}");
var blankPerson = new Person();
WriteLine(
format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated);
var gunny = new Person("Gunny", "Mars");
WriteLine(format:
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated);
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
WriteLine(bob.OptionalParameters(
number: 52.7, command: "Hide!"
));
WriteLine(bob.OptionalParameters("Poke!", active: false));
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 28)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
var p1 = new Person();
p1.Name = "Bob Smith";
p1.DateOfBirth = new System.DateTime(1965, 12, 22);
WriteLine($"{p1.Name} was born on {p1.DateOfBirth:dddd, d MMMM yyyy}");
var p2 = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 17)
};
WriteLine($"{p2.Name} was born on {p2.DateOfBirth:d MMMM yy}");
p1.FavouriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine($"{p1.Name}'s favourite wonder is {p1.FavouriteAncientWonder}");
p1.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon |
WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
// p1.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{p1.Name}'s bucket list is {p1.BucketList}");
p1.Children.Add(new Person {
Name = "Alfred"
});
p1.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($" {p1.Name} has {p1.Children.Count} children:");
for (int child = 0; child < p1.Children.Count; child++)
{
WriteLine($" {p1.Children[child].Name}");
}
BankAccount.InterestRate = 0.012M;
var ba1 = new BankAccount();
ba1.AccountName = "Mrs. Jones";
ba1.Balance = 2400;
WriteLine($"{ba1.AccountName} earned {ba1.Balance * BankAccount.InterestRate:C} interest.");
var ba2 = new BankAccount();
ba2.AccountName = "Ms. Gerrier";
ba2.Balance = 98;
WriteLine($"{ba2.AccountName} earned {ba2.Balance * BankAccount.InterestRate:C} interest.");
WriteLine($"{p1.Name} is a {Person.Species}");
var p3 = new Person();
WriteLine($"{p3.Name} was instantiated at {p3.Instantiated:hh:mm:ss} on {p3.Instantiated:dddd, d MMMM yyyy}");
var p4 = new Person("Aziz");
WriteLine($"{p4.Name} was instantiated at { p4.Instantiated:hh:mm:ss} on { p4.Instantiated:dddd, d MMMM yyyy}");
p1.WriteToConsole();
WriteLine(p1.GetOrigin());
Tuple <string, int> fruit4 = p1.GetFruitCS4();
WriteLine($"There are {fruit4.Item2} {fruit4.Item1}.");
(string, int)fruit7 = p1.GetFruitCS7();
WriteLine($"{fruit7.Item1}, {fruit7.Item2} there are.");
var fruitNamed = p1.GetNamedFruit();
WriteLine($"Are there {fruitNamed.Number} {fruitNamed.Name}?");
// C# 7.0
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (p1.Name, p1.Children.Count);
WriteLine($"{thing2.Item1} has {thing2.Item2} children.");
// C# 7.1
var thing3 = (p1.Name, p1.Children.Count);
WriteLine($"{thing3.Name} has {thing3.Count} children.");
// деконструкция кортежей
(string fruitName, int fruitNumber) = p1.GetFruitCS7();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
WriteLine(p1.SayHello());
WriteLine(p1.SayHello("Emily"));
WriteLine(p1.OptionalParameters());
WriteLine(p1.OptionalParameters("Jump!", 98.5));
WriteLine(p1.OptionalParameters(number: 52.7, command: "Hide!"));
WriteLine(p1.OptionalParameters("Poke!", active: false));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
p1.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
// упрощенный синтаксис параметров out в C# 7
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn't exist yet!");
p1.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
WriteLine(format: "{0} was born on {1:dddd,d MMMM yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth);
//
var alice = new Person {
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
WriteLine(format: "{0} was born on {1:dd MMM yy}",
arg0: alice.Name,
arg1: alice.DateOfBirth);
bob.FavouriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine(format: "{0}'s favourite wonder is {1}. Its interger is {2}.",
arg0: bob.Name,
arg1: bob.FavouriteAncientWonder,
arg2: (int)bob.FavouriteAncientWonder);
//bob.BucketList = WondersOfTheAncientWorld.MausoleumAtHalicarnassus | WondersOfTheAncientWorld.HangingGardensOfBabylon;
bob.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{bob.Name}'s bucket list is {bob.BucketList}");
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{bob.Name} has {bob.Children.Count} children.");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine($"{bob.Children[child].Name}");
}
//Making a field static
BankAccount.InterestRate = 0.012M; //store a shared value
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.InterestRate
);
//Making a field constant
WriteLine($"{bob.Name} is a {Person.Species} and PI constant is {Math.PI}.");
//Making a field Read-only
WriteLine($"{bob.Name} was born on {bob.HomePlanet}.");
//Initializing fields with constructors
var blankPerson = new Person();
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated);
var gunny = new Person("Gunny", "Mars");
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated);
//Returnig values from methods
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
//call tuple method
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
//Naming fields of a tuple
var fruitNamed = bob.GetFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}");
//infering tuple names
var things1 = ("Neville", 4);
WriteLine($"{things1.Item1} has {things1.Item2} children");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
//Deconstructin tuples
// deconstruct return value into two separate variables
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
// fruitName
// fruitNumber
//Defining and Passing Parameters to methods
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
//Passing Optional Parameters & Naming Arguments
WriteLine(bob.OptionalParameters(number: 98.33, command: "Alright!"));
//Controlling how parameters are passed
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn't exist yet!");
//simplified C# 7.0 syntax for out parameter
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
//Access Control with Properties & Indexers
var sam = new Person {
Name = "Sam", DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
//Defining Settable Properties
sam.FavouriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favourite ice-cream floavor is {sam.FavouriteIceCream}.");
sam.FavouritePrimaryColor = "GREen";
WriteLine($"Sam's favourite primary color is {sam.FavouritePrimaryColor}");
//Defining Indexers
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
//Pattern matching with Objects
object[] passengers =
{
new FirstClassPassenger {
AirMiles = 1_419
},
static void Main(string[] args)
{
var bob = new Person();
// WriteLine(bob.ToString());
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeus;
bob.BucketList = WondersOfTheAncientWorld.Pyramid
| WondersOfTheAncientWorld.StatueOfZeus;
// bob.BucketList = (WondersOfTheAncientWorld)5;
bob.Children.Add(new Person {
Name = "Jeff"
});
bob.Children.Add(new Person {
Name = "Mary"
});
WriteLine($"{bob.Name} was bon on {bob.DateOfBirth:d}");
WriteLine($"{bob.Name} favorite place is {(int)bob.FavoriteAncientWonder}");
WriteLine($"{bob.Name} bucketlist is {bob.BucketList}");
WriteLine($"{bob.Name} has {bob.Children.Count} children");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine(bob.Children[child].Name);
}
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} was born in {bob.HomePlanet}");
var blankPerson = new Person();
WriteLine(
format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated
);
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
var fruitNamed = bob.GetNamedFruit();
WriteLine($"{fruitNamed.Name}, {fruitNamed.Number} there are.");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("jump", 98.5));
WriteLine(bob.OptionalParameters(number: 52.7, command: "Hide"));
WriteLine(bob.OptionalParameters("Poke", active: false));
int a = 10, b = 20, c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
a = 10; b = 20;
WriteLine($"Before: a = {a}, b = {b}, d dose not exist");
bob.PassingParameters(a, ref b, out int d);
WriteLine($"After: a = {a}, b = {b}, d = {d}");
BankAccount.IntrestRate = 0.012M;
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.IntrestRate);
var sam = new Person
{
Name = "sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
sam.FavoritePrimaryColor = "red";
WriteLine($"sam's Favorite icecream is {sam.FavoriteIceCream}");
WriteLine($"sam's Favorite color is {sam.FavoritePrimaryColor}");
}
static void Main(string[] args)
{
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
bob.BucketList =
WondersOfTheAncientWorld.HangingGardensOfBabylon
|
WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
bob.WriteToConsole();
var alice = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
alice.WriteToConsole();
BankAccount.InterestRate = 0.012M; // store a shared value
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Mr. Gerrier";
gerrierAccount.Balance = 98;
var blankPerson = new Person();
WriteLine(
format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}",
blankPerson.Name,
blankPerson.HomePlanet,
blankPerson.Instantiated
);
var gunny = new Person("Gunny", "Mars");
WriteLine(
format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
gunny.Name,
gunny.HomePlanet,
gunny.Instantiated
);
var fruit = bob.GetFruit();
WriteLine($"{fruit.Name}, {fruit.Number} there are.");
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1}, {thing1.Item2} there are.");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name}, {thing2.Count} there are.");
// // store return value in a typle variable with two fields
// (string name, int age) tupleWithNamedFields = GetPerson();
// // typleWithNamedFields.name
// // typleWithNamedFields.age
// // deconstruct return value into two separate variables
// (string name, int age) = GetPerson();
// // name
// // age
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"deconstructed: {fruitName}, {fruitNumber}");
// command is Run!, number is 0, active is True
WriteLine(bob.OptionalParameters());
// command is jump!, number is 98.5, active is True
WriteLine(bob.OptionalParameters("Jump!", 98.5));
// command is Hide!, number is 52.7, active is True
WriteLine(bob.OptionalParameters(number: 52.7, command: "Hide!"));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"before a={a}, b={b}, c={c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"after a={a}, b={b}, c={c}");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
// indexers
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
}
static void Main(string[] args)
{
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
bob.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon | WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
WriteLine(
format: "{0} was born on {1:dddd, d MMMM yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth);
/*
* WriteLine(format:
* "{0}'s favorite wonder is {1}. It's integer is {2}.",
* arg0: bob.Name,
* arg1: bob.FavoriteAncientWonder,
* arg2: (int)bob.FavoriteAncientWonder);
*/
//Bob Smith's bucket list is HangingGardensOfBabylon, MausoleumAtHalicarnassus
WriteLine($"{bob.Name}'s bucket list is {bob.BucketList}");
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine(
$"{bob.Name} has {bob.Children.Count} children:");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine($" {bob.Children[child].Name}");
}
BankAccount.InterestRate = 0.012M; // store a shared value
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.InterestRate);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: gerrierAccount.AccountName,
arg1: gerrierAccount.Balance * BankAccount.InterestRate);
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} was born on {bob.HomePlanet}");
var blankPerson = new Person();
WriteLine(format:
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated);
var gunny = new Person("Gunny", "Mars");
WriteLine(format:
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated);
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
var fruitNamed = bob.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}.");
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
// store return value in a tuple variable with two fields
// (string name, int age) tupleWithNamedFields = GetPerson();
// tupleWithNamedFields.name
// tupleWithNamedFields.age
// deconstruct return value into two separate variables
// (string name, int age) = GetPerson();
// name
// age
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
WriteLine(bob.OptionalParameters(
number: 52.7, command: "Hide!"));
WriteLine(bob.OptionalParameters("Poke!", active: false));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
int d = 10;
int e = 20;
WriteLine(
$"Before: d = {d}, e = {e}, f doesn't exist yet!");
// simplified C# 7.0 syntax for the out parameter
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
//声明变量，初始化变化，输出变量信息。
var bob = new Person();
bob.Name = "Bob smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
WriteLine(format: "{0} was born on {1: dddd, d MMMM yyyy}", arg0: bob.Name, arg1: bob.DateOfBirth);
//新增bob变量的FavoriteAncientWonder的值。
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{bob.Name} has {bob.Children.Count} children:");
foreach (Person p1 in bob.Children)
{
WriteLine($"{p1.Name}");
}
// for (int child = 0; child < bob.Children.Count; child++)
// {
// WriteLine($" {bob.Children[child].Name}") ;
// }
//bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
bob.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon | WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
WriteLine($"{bob. Name}' s bucket list is {bob. BucketList}");
//输出
WriteLine(format: "{0}'s FavoriteAncientWonder is {1},It's integer is {2}.", arg0: bob.Name, arg1: bob.FavoriteAncientWonder, arg2: (int)WondersOfTheAncientWorld.StatueOfZeusAtOlympia);
//新增alice变量
var alice = new Person()
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1984, 7, 3)
};
WriteLine(format: "{0} was born on {1:dd MMM yy}", arg0: alice.Name, arg1: alice.DateOfBirth);
BankAccount.InterestRate = 0.012M;
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs jones";
jonesAccount.Balance = 2400M;
WriteLine(format: "{0} earned {1:C} interest rate.", arg0: jonesAccount.AccountName, arg1: jonesAccount.Balance * BankAccount.InterestRate);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Mr gerrier";
gerrierAccount.Balance = 98M;
WriteLine(format: "{0} earned {1:C} interest rate.", arg0: gerrierAccount.AccountName, arg1: gerrierAccount.Balance * BankAccount.InterestRate);
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} was born in {bob.HomePlanet}");
var blankPerson = new Person();
WriteLine(format: "{0} of {1} was create at {2:hh:mm:ss} on a {2:dddd}.", arg0: blankPerson.Name, arg1: blankPerson.HomePlanet, arg2: blankPerson.Instantiated);
var gunny = new Person("gunny", "Mars");
WriteLine(format: "{0} of {1} was create at {2:hh:mm:ss} on a {2:dddd}.", arg0: gunny.Name, arg1: gunny.HomePlanet, arg2: gunny.Instantiated);
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
(string Name, int Number)fruit = bob.GetFruit();
(string Name, int Number) = bob.GetFruit();
WriteLine($"There are {fruit.Number} {fruit.Name}.");
WriteLine($"Deconstructed: {Name},{Number}");
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children. ");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children. ");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("jump", 98.5));
WriteLine(bob.OptionalParameters(number: 52.9, command: "Hide!"));
WriteLine(bob.OptionalParameters("Poke!", active: true));
int a = 10, b = 20, c = 30;
WriteLine("a = {0},b = {1},c = {2},", a, b, c);
bob.PassingParameters(a, ref b, out c);
WriteLine("a = {0},b = {1},c = {2},", a, b, c);
int d = 10, e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn' t exist yet! ");
// simplified C# 7. 0 syntax for the out parameter
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}. ");
sam.FavoritePrimaryColor = "red";
WriteLine($"Sam' s favorite primary color is {sam.FavoritePrimaryColor}. ");
test t1 = new test();
t1.setProperty("test");
WriteLine(t1.getTest());
//Indexers
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam' s first child is {sam.Children[0] . Name}");
WriteLine($"Sam' s second child is {sam.Children[1] . Name}");
WriteLine($"Sam' s first child is {sam[0].Name}");
WriteLine($"Sam' s second child is {sam[1].Name}");
}
static void Chapter05()
{
var p1 = new Person();
p1.Name = "Bob Smith";
p1.DateOfBirth = new DateTime(1965, 12, 22);
WriteLine($"{p1.Name} was born on {p1.DateOfBirth:dddd, d MMMM yyyy}");
var p2 = new Person()
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 17)
};
WriteLine($"{p2.Name} was born on {p2.DateOfBirth:d MMM yy}");
// without flags - one only
p1.FavouriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine($"{p1.Name}'s favourite wonder is {p1.FavouriteAncientWonder}");
// p1.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon |
// WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
p1.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{p1.Name}'s bucket list is {p1.BucketList}");
// Add people to chlidren list
p1.Children.Add(new Person("Alfred"));
p1.Children.Add(new Person("Zoe"));
WriteLine($"{p1.Name} has {p1.Children.Count} children:");
for (int child = 0; child < p1.Children.Count; child++)
{
WriteLine($" {p1.Children[child].Name}");
}
BankAccount.InterestRate = 0.012M;
var ba1 = new BankAccount();
ba1.AccountName = "Mrs. Jones";
ba1.Balance = 2400;
WriteLine($"{ba1.AccountName} earned {ba1.Balance * BankAccount.InterestRate:C} Interest.");
var ba2 = new BankAccount {
AccountName = "Ms. Gerrier",
Balance = 98
};
WriteLine($"{ba2.AccountName} earned {ba2.Balance * BankAccount.InterestRate:C} Interest.");
WriteLine($"{p1.Name} is a {Person.Species}");
var p3 = new Person();
WriteLine($"{p3.Name} was instantiated at {p3.Instantiated:hh:mm:ss} on {p3.Instantiated:dddd, d MMMM yyyy}");
var p4 = new Person("Aziz");
WriteLine($"{p4.Name} was instantiated at {p4.Instantiated:hh:mm:ss} on {p4.Instantiated:dddd, d MMMM yyyy}");
p1.WriteToConsole();
WriteLine(p1.GetOrigin());
Tuple <string, int> fruit4 = p1.GetFruitCS4();
WriteLine($"There are {fruit4.Item2} {fruit4.Item1}.");
(string, int)fruit7 = p1.GetFruitCS7();
WriteLine($"{fruit7.Item1}, {fruit7.Item2} there are.");
var fruitNamed = p1.GetNamedFruit();
WriteLine($"Are there {fruitNamed.Number} {fruitNamed.Name}?");
// Inferring tuple names
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children");
var thing2 = (p1.Name, p1.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children");
// YOu can deconstruct Tuples
(string fruitName, int fruitNumber) = p1.GetFruitCS7();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
// say hello
WriteLine(p1.SayHello());
WriteLine(p1.SayHello("Emily"));
// optional parameters
WriteLine(p1.OptionalParameters());
// pass parameters in order
WriteLine(p1.OptionalParameters("Jump!", 98.5));
// use named parameters to negate requirement for order
WriteLine(p1.OptionalParameters(number: 52.7, command: "Hide!"));
// skip paramters using named arguments
WriteLine(p1.OptionalParameters(command: "Poke!", active: false));
// passing parameters
int a = 10;
int b = 20;
// value a is recreated in method and not returned.
// reference to b is passed - which is why it can change
// c is created in the method and so anything passed in is lost.
WriteLine($"Before: a = {a}, b = {b}, c isn't created yet!");
p1.PassingParameters(a, ref b, out int c);
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
// Using partial Person class
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
// using getters and setters
sam.FavouriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favourite ice-cream flavour is {sam.FavouriteIceCream}.");
sam.FavouritePrimaryColor = "Red";
WriteLine($"Sam's favourite primary color is {sam.FavouritePrimaryColor}.");
try
{
sam.FavouritePrimaryColor = "Yellow";
WriteLine($"Sam's favourite primary color is {sam.FavouritePrimaryColor}.");
}
catch (Exception ex)
{
WriteLine($"{ex.GetType()}: {ex.Message}");
}
}
static void Main(string[] args)
{
Person bob = new Person();
WriteLine(bob.ToString());
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 2);
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine(
format: "{0} was born on {1:dddd, dd/MM/yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth);
WriteLine(format:
"{0}'s favorite wonder is {1}. Its integer is {2}.",
arg0: bob.Name,
arg1: bob.FavoriteAncientWonder,
arg2: (int)bob.FavoriteAncientWonder);
bob.Children.Add(new Person());
bob.Children.Add(new Person { Name = "Zoe" });
WriteLine(
$"{bob.Name} has {bob.Children.Count} children:");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine($" {bob.Children[child].Name}");
}
WriteLine($"{bob.Name}'s 1st child is {bob.Children[0].Name}");
// indexer
WriteLine($"{bob.Name}'s 1st child is {bob[0].Name}");
// const field
WriteLine(
$"{bob.Name} is a {Person.Species}");
// Add Friend
bob.addFriend(new Person("Edward", "Earth"));
bob.addFriend(new Person("Edwin", "Mars"));
List<Person> allFriends = bob.getFriend();
for(int idx=0; idx< allFriends.Count; idx++){
WriteLine($"{bob.Name}'s friend {idx}: {allFriends[idx].Name}");
}
for(int idx=0; idx< allFriends.Count; idx++){
string idxString = idx.ToString();
WriteLine($"{bob.Name}'s friend {idx}: {bob[idxString].Name}");
}
// calling Method
WriteLine("** WriteLine(bob.GetOrigin())");
WriteLine(bob.GetOrigin());
WriteLine("** bob.WriteToConsole()");
bob.WriteToConsole();
var fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
var fruitNamed = bob.GetNamedFruit();
WriteLine($"{fruitNamed.Name}, {fruitNamed.Number} there are.");
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
(string fruitName, int fruitNumber) dcFruit = bob.GetFruit();
WriteLine($"Deconstructed 2: {dcFruit.fruitName}, {dcFruit.fruitNumber}");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Edward"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
WriteLine(bob.OptionalParameters(command: "ALL!", active: false));
int d = 10;
int e = 20;
WriteLine(
$"Before: d = {d}, e = {e}, f doesn't exist yet!");
// simplified C# 7.0 syntax for the out parameter
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var alice = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
WriteLine(
format: "{0} was born on {1:dddd, dd/MM/yyyy}",
arg0: alice.Name,
arg1: alice.DateOfBirth);
var blankPerson = new Person();
WriteLine(format:"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated);
var gunny = new Person(initialName:"Gunny", homePlanet:"Mars");
WriteLine(
format:"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated);
// Things of Default
var default1 = new ThingOfDefaults();
WriteLine("** Thing of Default");
WriteLine(
format: "int: {0}, DateTime:{1}, string:{2}, {3},",
default1.Population, default1.When,
default1.Name, default1.People.Count
);
// ----------------------
// BankAccount
// ----------------------
BankAccount.InterestRate = 0.012M; // store a shared value
var jonesAccount = new BankAccount
{
AccountName= "Mrs. Jones",
Balance= 2400
};
WriteLine(format: "{0}'s Balanace is {1:N} earned {2:C} interest.",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance,
arg2: jonesAccount.Balance * BankAccount.InterestRate);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
WriteLine(format: "{0}'s Balanace is {1:N} earned {2:C} interest.",
arg0: gerrierAccount.AccountName,
arg1: gerrierAccount.Balance,
arg2: gerrierAccount.Balance * BankAccount.InterestRate);
// Try Property
var sam = new Person(initialName:"Sam", homePlanet:"Mars", initBirth: new DateTime(1972, 1, 27));
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Stars";
WriteLine($"{sam.Name}'s favorite icecream is {sam.FavoriteIceCream}");
sam.FavoritePrimaryColor="red";
WriteLine($"{sam.Name}'s favorite Color is {sam.FavoritePrimaryColor}");
try{
sam.FavoritePrimaryColor="yellow";
}
catch (ArgumentException argEx){
WriteLine($"{argEx.GetType()} says {argEx.Message}");
}
// --------------------------------------
// Flight Patterns(object pattern matching)
// --------------------------------------
WriteLine("// -------------------------------");
WriteLine("//Flight Patterns(object pattern matching");
WriteLine("// -------------------------------");
var passengers = new object[5]{
new FirstClassPassenger { AirMiles = 1_419 },
static void Main(string[] args)
{
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
WriteLine(
format: "{0} was born on {1:dddd, d MMMM yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth);
// WriteLine($"{bob.Name} was born on {bob.DateOfBirth:dddd, d MMMM yyyy}");
var alice = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
WriteLine(
format: "{0} was born on {1:dd MMM y}",
arg0: alice.Name,
arg1: alice.DateOfBirth);
bob.FavoriteAncientWonder =
WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine(
format: "{0}'s favorite wonder is {1}. Its integer is {2}.",
arg0: bob.Name,
arg1: bob.FavoriteAncientWonder,
arg2: (int)bob.FavoriteAncientWonder);
bob.BucketList =
WondersOfTheAncientWorld.HangingGardensOfBabylon
| WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
// other way to write this is below--don't use it b/c it's harder to read
// bob.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{bob.Name}'s bucket list is {bob.BucketList}");
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine(
$"{bob.Name} has {bob.Children.Count} children: ");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine($" {bob.Children[child].Name}");
}
// foreach (Person child in bob.Children)
// {
// // WriteLine($" {child.Name}");
// Write($" {child.Name} ");
// }
// WriteLine();
BankAccount.InterestRate = 0.012M; // store a shared value
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.InterestRate);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: gerrierAccount.AccountName,
arg1: gerrierAccount.Balance * BankAccount.InterestRate);
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} was born on {bob.HomePlanet}");
var blankPerson = new Person();
WriteLine(format:
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated);
var gunny = new Person("Gunny", "Mars");
WriteLine(format:
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated);
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
var fruitNamed = bob.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}.");
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
WriteLine(bob.OptionalParameters(
number: 52.7, command: "Hide!"));
WriteLine(bob.OptionalParameters("Poke!", active: false));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
int d = 10;
int e = 20;
WriteLine(
$"Before: d = {d}, e = {e}, f doesn't exist yet!");
//simplified C# 7.0 syntax for the out parameter
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
object[] passengers =
{
new FirstClassPassenger {
AirMiles = 1_419
},
static void Main(string[] args)
{
var p1 = new Person
{
Name = "Bob Smith",
DateOfBirth = new System.DateTime(1965, 12, 22),
BucketList = WondersOfTheAncientWorld.StatueOfZeusAtOlympia
};
WriteLine($"{p1.Name} was born on {p1.DateOfBirth:dddd, d MMMM yyyy}");
WriteLine($"{p1.Name}'s favurite wonder is {p1.BucketList}");
p1.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon |
WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
//p1.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{p1.Name}'s bucket list is {p1.BucketList}");
p1.Children.Add(new Person {
Name = "Alfred"
});
p1.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{p1.Name} has {p1.Children.Count} children:");
for (int child = 0; child < p1.Children.Count; child++)
{
WriteLine($"{p1.Children[child].Name}");
}
WriteLine($"{p1.Name} is {Person.Species}");
WriteLine($"{p1.Name} was born on {p1.HomePlanet}");
var p2 = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 17)
};
WriteLine($"{p2.Name} was born on {p2.DateOfBirth:d MMM yy}");
WriteLine(new string('-', 50));
var p3 = new Person();
WriteLine($"{p3.Name} was instantiated at {p3.Instantiated:hh:mm:ss} on " +
$"{p3.Instantiated:dddd, d MMMM yyyy}");
var p4 = new Person("Aziz");
WriteLine($"{p4.Name} was instantiated at {p4.Instantiated:hh:mm:ss} on " +
$"{p4.Instantiated:dddd, d MMMM yyyy}");
WriteLine(new string('-', 50));
p1.WriteToConsole();
WriteLine(p1.GetOrigin());
WriteLine(new string('-', 50));
BankAccount.InterestRate = 0.012M;
var ba1 = new BankAccount
{
AccountName = "Mrs. Jones",
Balance = 2400
};
WriteLine($"{ba1.AccountName} earned {ba1.Balance * BankAccount.InterestRate:C} interest");
var ba2 = new BankAccount
{
AccountName = "Ms.Gerrier",
Balance = 98
};
WriteLine($"{ba2.AccountName} earned {ba2.Balance * BankAccount.InterestRate:C} interest");
WriteLine(new string('-', 50));
// Tuples
Tuple <string, int> fruit4 = p1.GetFruitCS4();
WriteLine($"There are {fruit4.Item2} {fruit4.Item1}");
(string, int)fruit7 = p1.GetFruitCS7();
WriteLine($"{fruit7.Item1}, {fruit7.Item2} there are");
var fruitNamed = p1.GetNamedFruit();
WriteLine($"Are there {fruitNamed.Number} {fruitNamed.Name}?");
WriteLine(new string('-', 50));
var thing1 = ("Neville", 4);
WriteLine(
$"{thing1.Item1} has {thing1.Item2} children");
var thing2 = (p1.Name, p1.Children.Count);
WriteLine(
$"{thing2.Name} has {thing2.Count} children");
WriteLine(new string('-', 50));
WriteLine(p1.SayHello());
WriteLine(p1.SayHello("Emily"));
WriteLine(new string('-', 50));
WriteLine(p1.OptionalParameters());
WriteLine(p1.OptionalParameters("Jump!", 98.5));
WriteLine(p1.OptionalParameters(number: 52.7, command: "Hide!"));
WriteLine(new string('-', 50));
int a = 10, b = 20, c = 30;
WriteLine($"Before : a = {a}, b = {b}, c = {c}");
p1.PassingParametrs(a, ref b, out c);
WriteLine($"After : a = {a}, b = {b}, c = {c}");
// simplify out parameters syntax in C# 7
int d = 10;
int e = 20;
WriteLine($"Before : d = {d}, e = {e}, f doesn't exist yet");
p1.PassingParametrs(d, ref e, out int f);
WriteLine($"Before : d = {d}, e = {e}, f = {f}");
WriteLine(new string('-', 50));
var Sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(Sam.Origin);
WriteLine(Sam.Greeting);
Write(Sam.Age);
Sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {Sam.FavoriteIceCream}.");
Sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {Sam.FavoritePrimaryColor}.");
WriteLine(new string('-', 50));
Sam.Children.Add(new Person {
Name = "Charlie"
});
Sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {Sam.Children[0].Name}");
WriteLine($"Sam's swcond child is {Sam.Children[1].Name}");
WriteLine($"Sam's first child is {Sam[0].Name}");
WriteLine($"Sam's second child is {Sam[1].Name}");
}
static void Main(string[] args)
{
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
WriteLine($"{bob.Name} was born on {bob.DateOfBirth:dddd, d MMMM yyyy}");
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine($"{bob.Name}'s favorite wonder is {bob.FavoriteAncientWonder}. Its integer is {(int)bob.FavoriteAncientWonder}.");
bob.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon
| WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
WriteLine($"{bob.Name}'s bucket list is {bob.BucketList}");
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{bob.Name} has {bob.Children.Count} children:");
foreach (Person child in bob.Children)
{
WriteLine($" {child.Name}");
}
WriteLine($"{bob.Name} is of species {Person.Species}");
WriteLine($"{bob.Name} was born on planet {bob.HomePlanet}");
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
var fruitNamed = bob.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}.");
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
var alice = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
WriteLine($"{alice.Name} was born on {alice.DateOfBirth:dd MMM yy}");
BankAccount.InterestRate = 0.012M;
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine($"{jonesAccount.AccountName} earned {jonesAccount.Balance * BankAccount.InterestRate:C} interest.");
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
WriteLine($"{gerrierAccount.AccountName} earned {gerrierAccount.Balance * BankAccount.InterestRate:C}");
var blankPerson = new Person();
WriteLine($"{blankPerson.Name} of {blankPerson.HomePlanet} was created at {blankPerson.Instantiated:hh:mm:ss} on a {blankPerson.Instantiated:dddd}");
var gunny = new Person("Gunny", "Mars");
WriteLine($"{gunny.Name} of {gunny.HomePlanet} was created at {gunny.Instantiated:hh:mm:ss} on a {gunny.Instantiated:dddd}");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump", 98.5));
WriteLine(bob.OptionalParameters(number: 52.7, command: "Hide!"));
WriteLine(bob.OptionalParameters("Poke", active: false));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn't exist yet!");
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}!");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolage Fudge";
WriteLine($"Sam's favorite ice cream flavor is {sam.FavoriteIceCream}");
sam.FavoritePrimaryColor = "red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[0].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
// bob
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1970, 11, 30);
bob.FavouriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
bob.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon | WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
bob.Children.Add(new Person {
Name = "Alf"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine();
WriteLine("Bob-----------------------------------------");
WriteLine(bob.getOrigin());
bob.WriteToConsole();
WriteLine(
format: "{0} was born on {1:dddd, d MMMM yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth
);
WriteLine(
format: "{0}'s favourite wonder is {1}, it's integer is {2}",
arg0: bob.Name,
arg1: bob.FavouriteAncientWonder,
arg2: (int)bob.FavouriteAncientWonder
);
WriteLine($"{bob.Name}'s bucket list is: {bob.BucketList}");
WriteLine($"{bob.Name} has {bob.Children.Count} children");
foreach (Person child in bob.Children)
{
WriteLine($"child name: {child.Name}");
}
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} is from {bob.HomePlanet}");
WriteLine();
WriteLine("Tuples-----------------------------------------");
(string, int)fruit = bob.GetFruit();
WriteLine($"USING TUPLES: {fruit.Item1}, {fruit.Item2} there are.");
var vegetablesNamed = bob.GetVeg();
WriteLine($"USING named TUPLES: {vegetablesNamed.Name}, {vegetablesNamed.Number} there are.");
// Deconstructing tuples
(string name, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed TUPLE: {name}, {fruitNumber}");
// Inferring tuple names
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Item1} has {thing2.Item2} children-");
// optional parameters
WriteLine();
WriteLine("Optional Parameters------------------------------");
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump", 2.4));
WriteLine(bob.OptionalParameters(number: 2.4, active: false));
WriteLine(bob.OptionalParameters(active: false, command: "Fly"));
WriteLine(bob.OptionalParameters("Walk", active: false));
// alice
var alice = new Person();
alice.Name = "Alice Smith";
alice.DateOfBirth = new DateTime(1968, 10, 22);
WriteLine();
WriteLine("Alice------------------------------");
WriteLine(
format: "{0} was born on {1:dd, MMM yy}",
arg0: alice.Name,
arg1: alice.DateOfBirth
);
WriteLine();
WriteLine("Constructors----------------------------");
// blank Person to use constructor
var blankPerson = new Person();
WriteLine(
format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated
);
var gunny = new Person("Gunny", "Mars");
WriteLine(
format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated
);
// bank account class use
BankAccount.InterestRate = 0.012M;
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs Jones";
jonesAccount.Balance = 2400;
var smithAccount = new BankAccount();
smithAccount.AccountName = "Mrs Smith";
smithAccount.Balance = 800;
WriteLine();
WriteLine("public STATIC property - shared across all instances of class - bank interest rate demonstrateS ---------------");
WriteLine(
format: "{0} earned {1:C} interest",
arg0: jonesAccount,
arg1: jonesAccount.Balance * BankAccount.InterestRate
);
WriteLine(
format: "{0} earned {1:C} interest",
arg0: smithAccount,
arg1: smithAccount.Balance * BankAccount.InterestRate
);
WriteLine();
WriteLine("PARAMETERS - 3 ways: by value, reference or an an out parameter ---------------");
int a = 10;
int b = 20;
int c = 30; // no point in setting value of c as gets repoaced from within the method
bob.PassingParameters(a, ref b, out c);
WriteLine($"a: {a}, b: {b}, c {c}");
int d = 10;
int e = 20;
WriteLine($"d: {d}, e: {e}, f doesn't exist yet");
bob.PassingParameters(d, ref e, out int f);
WriteLine($"d: {d}, e: {e}, f: {f}");
WriteLine();
WriteLine("Partial classes and properties, and indexers ---------------");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavouriteIceCream = "Mint choc chip";
sam.FavouritePrimaryColour = "Red";
WriteLine($"{sam.Name}'s favourite ice cream is {sam.FavouriteIceCream} and fav primary colour is {sam.FavouritePrimaryColour}");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
// if you had no indexer set up for Children:
WriteLine($"{sam.Name}'s first child is {sam.Children[0].Name}");
WriteLine($"{sam.Name}'s second- child is {sam.Children[1].Name}");
// if you have indexer set up for Children - does it really add much value? I think it reduces ease of reading code...
WriteLine($"{sam.Name}'s first child is {sam[0].Name}");
WriteLine($"{sam.Name}'s second- child is {sam[1].Name}");
}
static void Main(string [] args)
{
var p1 = new Person();
p1.Name = "Bob Smith";
p1.DateOfBirth = new System.DateTime(1965, 12, 22);
p1.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon |
WondersOfTheAncientWorld.TempleOfArtemisAtEphesus;
//WriteLine ( $"{p1.Name} was born on {p1.DateOfBirth: dddd, d MMMM yyyy}" );
WriteLine($"{p1.Name}'s favourite wonder is {p1.BucketList}");
WriteLine($"{p1.Name} is a {Person.Species}.");
//WriteLine($"{p1.Name} was born on {p1.HomePlanet}");
p1.WriteToConsole();
WriteLine(p1.GetOrigin());
WriteLine(p1.SayHello());
WriteLine(p1.SayHello("Emily"));
WriteLine(p1.OptionalParameters("Jump!", 98.5));
p1.Children.Add(new Person {
Name = "Alfred"
});
p1.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{p1.Name} has {p1.Children.Count} children:");
// for ( int child = 0; child < p1.Children.Count; child++ )
// {
// WriteLine($" {p1.Children[child].Name}");
// }
foreach (var child in p1.Children)
{
WriteLine($" {child.Name}");
}
BankAccount.InterestRate = 0.012M;
var ba1 = new BankAccount();
ba1.AccountName = "Mrs. Jones";
ba1.Balance = 2400;
WriteLine($"{ba1.AccountName} earned {ba1.Balance * BankAccount.InterestRate:C} interest.");
var ba2 = new BankAccount();
ba2.AccountName = "Ms. Gerrier";
ba2.Balance = 98;
WriteLine($"{ba2.AccountName} earned {ba2.Balance * BankAccount.InterestRate:C} interest.");
var p3 = new Person();
WriteLine($"{p3.Name} was instantiated at {p3.Instantiated:h:mm:ss tt zz} on {p3.Instantiated:D}");
var p4 = new Person("Aziz");
WriteLine($"{p4.Name} was instantiated at {p4.Instantiated:h:mm:ss tt} on {p4.Instantiated:D}");
// Tuples
WriteLine("\nUsing Tuples...");
Tuple <string, int> fruit4 = p1.GetFruitCS4();
WriteLine($"There are {fruit4.Item1} {fruit4.Item2}.");
// (string, int) fruit7 = p1.GetFruitCS7 ();
// WriteLine($"{fruit7.Name}, {fruit7.Number} there are.");
var fruitNamed = p1.GetNamedFruit();
WriteLine($"Are there {fruitNamed.Number} {fruitNamed.Name}?");
// Tuple name inference
WriteLine("\nUsing Tuple name inferencing...");
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (p1.Name, p1.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
// Deconstructing a Tuple for its individual values.
WriteLine("\nDeconstructing a tuple...");
(string fruitName, int fruitNumber) = p1.GetFruitCS7();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
// Passing parameters into functions
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
p1.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn't exist yet!");
p1.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavouriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favourite ice-cream flavor is {sam.FavouriteIceCream}.");
sam.FavouritePrimaryColor = "Red";
WriteLine($"Sam's favourite primary color is {sam.FavouritePrimaryColor}.");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children [ 0 ].Name}");
WriteLine($"Sam's second child is {sam.Children [ 1 ].Name}");
WriteLine($"Sam's first child is {sam [ 0 ].Name}");
WriteLine($"Sam's second child is {sam [ 1 ].Name}");
}
static void Main(string[] args)
{
// Setting and outputting field values
var bob = new Person();
WriteLine(bob.ToString());
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
WriteLine(
format: "{0} was born on {1:dddd, d MMMM yyyy}",
arg0: bob.Name,
arg1: bob.DateOfBirth);
var alice = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
WriteLine(
format: "{0} was born on {1:dd MMM yy}",
arg0: alice.Name,
arg1: alice.DateOfBirth);
// Storing a value using an enum type
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine(format:
"{0}'s favorite wonder is {1}. It's integer is {2}.",
arg0: bob.Name,
arg1: bob.FavoriteAncientWonder,
arg2: (int)bob.FavoriteAncientWonder);
// Storing multiple values using an enum type
bob.BucketList =
WondersOfTheAncientWorld.HangingGardensOfBabylon
| WondersOfTheAncientWorld.MausoleumAtHalicarnassus
| WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
// bob.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{bob.Name}'s bucket list is {bob.BucketList}");
// Storing multiple values using collections
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine(
$"{bob.Name} has {bob.Children.Count} children:");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine($" {bob.Children[child].Name}");
}
foreach (var chi in bob.Children)
{
WriteLine($"=>{chi.Name}");
}
// Making a field static
BankAccount.InterestRate = 0.012M; // store a shared value
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.InterestRate);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
WriteLine(format: "{0} earned {1:C} interest.",
arg0: gerrierAccount.AccountName,
arg1: gerrierAccount.Balance * BankAccount.InterestRate);
BankAccount.InterestRate = 0.02M;
WriteLine(format: "{0} earned {1:C} interest.(InterestRate changed)",
arg0: jonesAccount.AccountName,
arg1: jonesAccount.Balance * BankAccount.InterestRate);
WriteLine(format: "{0} earned {1:C} interest.(InterestRate changed)",
arg0: gerrierAccount.AccountName,
arg1: gerrierAccount.Balance * BankAccount.InterestRate);
// Making a field constant
WriteLine($"{bob.Name} is a {Person.Species}");
// Making a field read-only
WriteLine($"{bob.Name} was born on {bob.HomePlanet}");
// Initializing fields with constructors
var blankPerson = new Person();
WriteLine(format:
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: blankPerson.Name,
arg1: blankPerson.HomePlanet,
arg2: blankPerson.Instantiated);
var gunny = new Person("Gunny", "Mars");
WriteLine(format:
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: gunny.Name,
arg1: gunny.HomePlanet,
arg2: gunny.Instantiated);
// Returning values from methods
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
// Combining multiple returned values using tuples
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
// Naming the fields of a tuple
var fruitNamed = bob.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}.");
// Inferring tuple names
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
// Deconstructing tuples
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
// Defining and passing parameters to methods
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
// Passing optional parameters and naming arguments
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
WriteLine(bob.OptionalParameters(
number: 52.7, command: "Hide!"));
WriteLine(bob.OptionalParameters("Poke!", active: false));
// Controlling how parameters are passed
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
int d = 10;
int e = 20;
WriteLine(
$"Before: d = {d}, e = {e}, f doesn't exist yet!");
// simplified C# 7 syntax for the out parameter
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
// Defining read-only properties
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
// Defining settable properties
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
// Defining indexers
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
var john = new Person("John", "Earth");
john.Name = "John Doe";
john.DateOfBirth = new DateTime(1992, 6, 19);
WriteLine(format: "{0} was born on {1:dddd, d MMMM yyyy}", // dddd: name of day, d: number of day, MMMM: name of month, yyyy: full year
arg0: john.Name,
arg1: john.DateOfBirth);
WriteLine(format: "{0} was born on {1:dd MMM yy}",
arg0: john.Name,
arg1: john.DateOfBirth);
WriteLine();
// ==========Enums==========
// Using enums in PacktLibrary WondersOfTheAncientWorld.cs
john.FavoriteWonder = WondersOfTheAncientWorld.HangingGardensOfBabylon;
WriteLine(format: "{0}'s favorite wonder is {1}. It's integer is {2}",
arg0: john.Name,
arg1: john.FavoriteWonder,
arg2: (int)john.FavoriteWonder); // enum valuesa are initialy stored as an int for efficiency.
// enums can also be called and set using int values when useing the decoration [System.Flags] and inheriting from byte
john.BucketList = WondersOfTheAncientWorld.ColossusOfRhodes | WondersOfTheAncientWorld.GreatPyramidOfGiza;
WriteLine($"{john.Name}'s bucket list is {john.BucketList}");
john.BucketList = (WondersOfTheAncientWorld)33;
WriteLine($"{john.Name}'s bucket list is {john.BucketList}");
WriteLine();
// ==========Objects with Lists==========
// calling from the public List<Person> in PacktLibrary Person.cs
john.Children.Add(new Person("Jane", john.HomePlanet));
john.Children.Add(new Person("Jack", john.HomePlanet));
WriteLine($"{john.Name} has {john.Children.Count} children:");
for (int child = 0; child < john.Children.Count; child++)
{
WriteLine($" {john.Children[child].Name}");
}
WriteLine();
// ==========Using static values==========
// using BankAccount.cs class
BankAccount.InterestRate = 0.12M; // store a shared value, InterestRate is static
var doeAccount = new BankAccount();
doeAccount.AccountName = "Mr. Doe";
doeAccount.Balance = 43_600;
WriteLine(format: "{0} earned {1:C} interest.", // :C - currency format
arg0: doeAccount.AccountName,
arg1: doeAccount.Balance * BankAccount.InterestRate);
var smithAccount = new BankAccount();
smithAccount.AccountName = "Mr. Smith";
smithAccount.Balance = 1_400;
WriteLine(format: "{0} earned {1:C} interest.", // :C - currency format
arg0: smithAccount.AccountName,
arg1: smithAccount.Balance * BankAccount.InterestRate);
// using const value from Person.cs
WriteLine($"{john.Name} is a {Person.Species}. (We hope)");
// using readonly value from Person.cs
WriteLine($"{john.Name} is from {john.HomePlanet}. (If he is a H**o Sapien)");
WriteLine();
// ==========Contrcutors==========
// Contrcutors with arguments
// using PersonArgs.cs
var mike = new Person("Mike", "Mars");
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
arg0: mike.Name,
arg1: mike.HomePlanet,
arg2: mike.Instantiated);
// using methods
mike.WriteToConsole();
WriteLine(mike.GetOrigin());
WriteLine();
// ==========Tuples==========
// using tuples
(string, int)fruit = mike.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
var fruitNamed = mike.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}.");
// variable use of tuples
var thing1 = ("George", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} Children.");
var thing2 = (john.Name, john.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
// Deconstructing tuples
(string fruitName, int fruitNumber) = mike.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
// taking the values held in GetFruit() and assigning the tuple to the new variables
WriteLine();
// ==========Param Methods and Overloading==========
WriteLine(mike.SayHello());
WriteLine(mike.SayHello("John"));
WriteLine();
// ==========Optional Parameters==========
WriteLine(mike.OptionalParameters()); // will output default values in PersonArgs.cs
WriteLine(mike.OptionalParameters("Jump!", 98.5)); // overwrites the default values
// delcaring some parameters can be skipped if you name the parameters based on the method
WriteLine(mike.OptionalParameters(number: 29.1, command: "Hide!")); // parameter calues can be named when declaring them
WriteLine(mike.OptionalParameters("Walk!", active: false));
WriteLine();
// ==========Controlling How Parameters are Passed==========
// by value (default)(in), ref(in-out), and as an out parameter(out)
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}.");
mike.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}.");
// When passing a value as a parameter by default, the current VALUE
// is passed, not the variable itself. a before and after is 10.
// When passing y as a reference to b, b increments as y increments.
// When using an out, the value in z overwrites the value of c.
// In C# 7.0 we can simpify code that uses the out variable:
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn't exist yet!");
// simplified syntax for the out parameter
mike.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f ={f}");
WriteLine();
// ==========Using Properties in C# 6+==========
// Using PersonAutoGen.cs
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1928, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
// settable properties
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice cream is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "red";
WriteLine($"Sam's favorite color is {sam.FavoritePrimaryColor}.");
// ==========Indexers==========
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
var edixon = new Person();
edixon.Name = "Edixon van Vliet";
edixon.DateOfBirth = new DateTime(1996, 3, 27);
WriteLine(
"{0} was born on {1:dddd, d MMMM yyyy}",
edixon.Name,
edixon.DateOfBirth
);
edixon.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine(
"{0}'s favorite wonder is {1}. It's integer is {2}.",
edixon.Name,
edixon.FavoriteAncientWonder,
(int)edixon.FavoriteAncientWonder
);
edixon.BucketList =
WondersOfTheAncientWorld.HangingGardensOfBabylon
| WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
WriteLine($"{edixon.Name}'s bucket list is {edixon.BucketList}");
edixon.Children.Add(new Person {
Name = "Alfred"
});
edixon.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{edixon.Name} has {edixon.Children.Count} children:");
foreach (Person child in edixon.Children)
{
WriteLine($" {child.Name}");
}
BankAccount.InterestRate = 0.012m;
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400m;
WriteLine(
"{0} earned {1:c} interest.",
jonesAccount.AccountName,
jonesAccount.Balance * BankAccount.InterestRate
);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98m;
WriteLine(
"{0} earned {1:c} interest.",
gerrierAccount.AccountName,
gerrierAccount.Balance * BankAccount.InterestRate
);
WriteLine($"{edixon.Name} is a {Person.Species}");
WriteLine($"{edixon.Name} was born on {edixon.HomePlanet}");
var blankPerson = new Person();
WriteLine(format:
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
blankPerson.Name,
blankPerson.HomePlanet,
blankPerson.Instantiated
);
var gunny = new Person("Gunny", "Mars");
WriteLine(
"{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.",
gunny.Name,
gunny.HomePlanet,
gunny.Instantiated
);
edixon.WriteToConsole();
WriteLine(edixon.GetOrigin());
(string, int)fruit = edixon.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
var fruitNamed = edixon.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}");
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
var thing2 = (edixon.Name, edixon.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count} children.");
(string fruitName, int fruitNumber) = edixon.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
WriteLine(edixon.SayHello());
WriteLine(edixon.SayHello("Emily"));
WriteLine(edixon.OptionalParameters());
WriteLine(edixon.OptionalParameters("Jump!", 98.5));
WriteLine(edixon.OptionalParameters(number: 52.7, command: "Hide!"));
WriteLine(edixon.OptionalParameters("Poke!", active: false));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
edixon.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
int d = 10;
int e = 20;
WriteLine(
$"Before: d = {d}, e = {e}, f doesn't exist yet!");
// simplified C# 7.0 syntax for the out parameter
edixon.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine(
$"{sam.Name}'s favorite ice-cream flavor is {sam.FavoriteIceCream}."
);
sam.FavoritePrimaryColor = "Red";
WriteLine(
$"{sam.Name}'s favorite primary color is {sam.FavoritePrimaryColor}."
);
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
var p1 = new Person("");
p1.Name = "Bob Smith";
p1.DateOfBirth = new System.DateTime(1954, 12, 22);
p1.FavouriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
WriteLine($"{p1.Name} was born on {p1.DateOfBirth:dddd, d MMMM yyyy}. And favourite wonder is {p1.FavouriteAncientWonder}");
WriteLine(p1.ToString());
p1.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon |
WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
// p1.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{p1.Name}'s bucket list is {p1.BucketList}");
//TODO это возов конструктора такой через {}?
p1.Children.Add(new Person("")
{
Name = "Alfred"
});
p1.Children.Add(new Person("")
{
Name = "Zoe"
});
WriteLine(
$"{p1.Name} has {p1.Children.Count} children:");
for (int child = 0; child < p1.Children.Count; child++)
{
WriteLine($" {p1.Children[child].Name}");
}
WriteLine($"{p1.Name} was instantiated at {p1.Instantiated:hh:mm:ss} on {p1.Instantiated:dddd, d MMMM yyyy}");
/* ****BankAccount**** */
BankAccount.InterestRate = 0.012M;
var ba1 = new BankAccount();
ba1.AccountName = "Mrs. Jones";
ba1.Balance = 2400;
WriteLine($"{ba1.AccountName} earned {ba1.Balance * BankAccount.InterestRate:C} interest.");
var ba2 = new BankAccount();
ba2.AccountName = "Ms. Gerrier";
ba2.Balance = 98;
WriteLine($"{ba2.AccountName} earned {ba2.Balance * BankAccount.InterestRate:C} interest.");
WriteLine($"{p1.Name} is a {Person.Species}");
WriteLine($"{p1.Name} was born on {p1.HomePlanet}");
/* TUPLES */
Tuple <string, int> fruit = p1.GetFruitCS4();
WriteLine($"There are {fruit.Item2} {fruit.Item1}.");
(string, int)fruit7 = p1.GetFruitCS7();
WriteLine($"{fruit7.Item1}, {fruit7.Item2} there are.");
/* TUPLE DESTRUCTURING */
var thing1 = ("Neville", 4);
(string name, int childNum) = thing1;
WriteLine(
$"{thing1.Item1} has {thing1.Item2} children.");
WriteLine($"Deconstructed {name} and his {childNum} children");
/* Optional Named Parameters */
WriteLine(p1.OptionalParameters(number: 52.7, command: "Hide!"));
/* Управление передачей параметров */
//TODO ref, out
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
// p1.PassingParameters(a, ref b, out c);
// System.Int32.TryParse("23", out int result);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
/* OBJECT DUMPER */
ObjectHelper.Dump(p1);
/* Свойства только для чтения*/
//TODO а какже readonly?
var sam = new Person("")
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
//TODO данные свойства внутри выполнряются как функции?
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
// Lambda Expressions
Func <int, int, int> adder = (m, n) => m + n;
//TODO Print out object properties.
ObjectHelper.Dump(sam);
// Computed properties
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
//ИНДЕКСАТОР
sam.Children.Add(new Person("")
{
Name = "Charlie"
});
sam.Children.Add(new Person("")
{
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
//Bob is instantiated and then his fields are set later
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlympia;
bob.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon | WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
// equivalent to bob.BucketList = (WondersOfTheAncientWorld)18 due to byte
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine(
format: "{0} was born on {1:dddd, d MMMM yyyy}.",
arg0: bob.Name,
arg1: bob.DateOfBirth
);
WriteLine(
format: "{0}'s favorite wonder is {1}. Its integer is {2}.",
arg0: bob.Name,
arg1: bob.FavoriteAncientWonder,
arg2: (int)bob.FavoriteAncientWonder
);
WriteLine($"{bob.Name}'s bucket list is {bob.BucketList}");
WriteLine($"{bob.Name} has {bob.Children.Count} children:");
//using a for loop to get the name of the children
/* for (int child = 0; child < bob.Children.Count; child++) {
* WriteLine($" {bob.Children[child].Name}");
* } */
//using a foreach loop to iterate through the list
foreach (Person child in bob.Children)
{
WriteLine($" {child.Name}");
}
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} was born on {bob.HomePlanet}");
//Alice is instantiated with the fields set at that time
var alice = new Person {
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
WriteLine(
format: "{0} was born on {1:dd MMM yy}",
arg0: alice.Name,
arg1: alice.DateOfBirth
);
BankAccount.InterestRate = 0.012M; //store a shared value
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
decimal jonesInterest = jonesAccount.Balance * BankAccount.InterestRate;
WriteLine($"{jonesAccount.AccountName} earned {jonesInterest:C} interest.");
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
decimal gerrierInterest = (gerrierAccount.Balance * BankAccount.InterestRate);
WriteLine($"{gerrierAccount.AccountName} earned {gerrierInterest:C} interest.");
var blankPerson = new Person();
WriteLine($"{blankPerson.Name} of {blankPerson.HomePlanet} was created at " +
$"{blankPerson.Instantiated:hh:mm:ss} on a {blankPerson.Instantiated:dddd}.");
var gunny = new Person("Gunny", "Mars");
WriteLine($"{gunny.Name} of {gunny.HomePlanet} was created at " +
$"{gunny.Instantiated:hh:mm:ss} on a {gunny.Instantiated:dddd}.");
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
//item syntax
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
//named syntax
var fruitNamed = bob.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}");
//using the item1, item2 syntax
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2} children.");
//set these equal to the class fields
var thing2 = (bob.Name, bob.Children.Count);
//can reference it using those automatically
WriteLine($"{thing2.Name} has {thing2.Count} children.");
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
WriteLine(bob.OptionalParameters(number: 52.7, command: "Hide!"));
WriteLine(bob.OptionalParameters("Poke!", active: false));
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn't exist yet!");
//simplified C# 7.0 syntax for the out parameter
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
var sam = new Person {
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite ice-cream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "Red";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}
static void Main(string[] args)
{
//var bob =new Person();
//WriteLine(bob.ToString());
var bob = new Person();
bob.Name = "Bob Smith";
bob.DateOfBirth = new DateTime(1965, 12, 22);
//dddd means the name of the day of the week
//d means the ne number of the day of the month
//MMMM means the name of the month
//yyyy means the full number of the year
WriteLine(format: "{0} was born on {1:dddd, d MMMM yyyy}", arg0: bob.Name, arg1: bob.DateOfBirth);
// another way to initialize the object
var alice = new Person
{
Name = "Alice Jones",
DateOfBirth = new DateTime(1998, 3, 7)
};
WriteLine(format: "{0} was born on {1:dd MMM yy}", arg0: alice.Name, arg1: alice.DateOfBirth);
// Use an enum
// enum internally is stored as int for effiency
bob.FavoriteAncientWonder = WondersOfTheAncientWorld.StatueOfZeusAtOlimpia;
WriteLine(format: "{0}'s favorite wonder is {1}. It's integer is {2}", arg0: bob.Name, arg1: bob.FavoriteAncientWonder, arg2: (int)bob.FavoriteAncientWonder);
bob.BucketList = WondersOfTheAncientWorld.HangingGardensOfBabylon | WondersOfTheAncientWorld.MausoleumAtHalicarnassus;
//bob.BucketList = (WondersOfTheAncientWorld)18;
WriteLine($"{bob.Name}'s bucket list is {bob.BucketList}");
bob.Children.Add(new Person {
Name = "Alfred"
});
bob.Children.Add(new Person {
Name = "Zoe"
});
WriteLine($"{bob.Name} has {bob.Children.Count} children");
for (int child = 0; child < bob.Children.Count; child++)
{
WriteLine($" {bob.Children[child].Name}");
}
// Bank Account Example
BankAccount.InterestRate = 0.012M; // store a shared value
var jonesAccount = new BankAccount();
jonesAccount.AccountName = "Mrs. Jones";
jonesAccount.Balance = 2400;
WriteLine(format: "{0} earned {1:C} interest.", arg0: jonesAccount.AccountName, arg1: jonesAccount.Balance * BankAccount.InterestRate);
var gerrierAccount = new BankAccount();
gerrierAccount.AccountName = "Ms. Gerrier";
gerrierAccount.Balance = 98;
WriteLine(format: "{0} earned {1:C} interest.", arg0: gerrierAccount.AccountName, arg1: gerrierAccount.Balance * BankAccount.InterestRate);
//Using const value
WriteLine($"{bob.Name} is a {Person.Species}");
WriteLine($"{bob.Name} was born on {bob.HomePlanet}");
// Constructor initialization
var blankPerson = new Person();
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.", arg0: blankPerson.Name, arg1: blankPerson.HomePlanet, arg2: blankPerson.Instantiated);
// Second constructor to initialize values
var gunny = new Person("Gunny", "Mars");
WriteLine(format: "{0} of {1} was created at {2:hh:mm:ss} on a {2:dddd}.", arg0: gunny.Name, arg1: gunny.HomePlanet, arg2: gunny.Instantiated);
// calling methods
bob.WriteToConsole();
WriteLine(bob.GetOrigin());
// Get Tuple's fields
(string, int)fruit = bob.GetFruit();
WriteLine($"{fruit.Item1}, {fruit.Item2} there are.");
// Named Tuple
var fruitNamed = bob.GetNamedFruit();
WriteLine($"There are {fruitNamed.Number} {fruitNamed.Name}.");
// Examples of tuples
var thing1 = ("Neville", 4);
WriteLine($"{thing1.Item1} has {thing1.Item2}");
var thing2 = (bob.Name, bob.Children.Count);
WriteLine($"{thing2.Name} has {thing2.Count}");
// Deconstructing tuples
(string fruitName, int fruitNumber) = bob.GetFruit();
WriteLine($"Deconstructed: {fruitName}, {fruitNumber}");
// Method paramters
WriteLine(bob.SayHello());
WriteLine(bob.SayHello("Emily"));
// Optional parameters
WriteLine(bob.OptionalParameters());
WriteLine(bob.OptionalParameters("Jump!", 98.5));
// Named paaramters
WriteLine(bob.OptionalParameters(number: 52.7, command: "Hide!"));
// You can even use named parameters to skip over optional parameters
WriteLine(bob.OptionalParameters("Poke!", active: false));
// in - ref - out parameters
int a = 10;
int b = 20;
int c = 30;
WriteLine($"Before: a = {a}, b = {b}, c = {c}");
bob.PassingParameters(a, ref b, out c);
WriteLine($"After: a = {a}, b = {b}, c = {c}");
// More example about out parameters
int d = 10;
int e = 20;
WriteLine($"Before: d = {d}, e = {e}, f doesn't exist yet");
// Simplified C# 7.0 syntax for the out parameter
bob.PassingParameters(d, ref e, out int f);
WriteLine($"After: d = {d}, e = {e}, f = {f}");
// Working with Properties
var sam = new Person
{
Name = "Sam",
DateOfBirth = new DateTime(1972, 1, 27)
};
WriteLine(sam.Origin);
WriteLine(sam.Greeting);
WriteLine(sam.Age);
sam.FavoriteIceCream = "Chocolate Fudge";
WriteLine($"Sam's favorite icecream flavor is {sam.FavoriteIceCream}.");
sam.FavoritePrimaryColor = "blue";
WriteLine($"Sam's favorite primary color is {sam.FavoritePrimaryColor}.");
// Indexers
sam.Children.Add(new Person {
Name = "Charlie"
});
sam.Children.Add(new Person {
Name = "Ella"
});
WriteLine($"Sam's first child is {sam.Children[0].Name}");
WriteLine($"Sam's second child is {sam.Children[1].Name}");
// Using Indexers
WriteLine($"Sam's first child is {sam[0].Name}");
WriteLine($"Sam's second child is {sam[1].Name}");
}