static void Main()
{
B1 b1 = new B1();
B2 b2 = new B2();
b1.Method <char>(); //call to A1.Method<T>
b1.Method <int>(); //call to A1.Method<T>
b1.Method(); //call to B1.Method with via base.Method<char>
b2.Method(); //call to B2.Method
//In essence, in case 1, the generic Method<T>() is still exposed since B1.Method<T> is different from B1.Method()
//whereas in case 2, there is Method() is closed to char when A2<int,char> is instantiated in B
//Also, B.Method() hids A2.Method() where as there is no hiding in A1 and B1
}
static void Main(string[] args)
{
var b1 = new A1.B();
WriteLine(b1.GetValue());
WriteLine();
B2 b2 = new B2();
b2.Method();
WriteLine();
B3 b3 = new B3();
b3.Method();
WriteLine();
// 隐式继承
Type t = typeof(SimpleClass);
BindingFlags flags = BindingFlags.Instance |
BindingFlags.Static |
BindingFlags.Public |
BindingFlags.NonPublic |
BindingFlags.FlattenHierarchy;
MemberInfo[] members = t.GetMembers(flags);
WriteLine($"Type {t.Name} has {members.Length} members: ");
foreach (var member in members)
{
string access = "";
string stat = "";
var method = member as MethodBase;
if (method != null)
{
if (method.IsPublic)
{
access = "Public";
}
else if (method.IsPrivate)
{
access = "Private";
}
else if (method.IsFamily)
{
access = "Protected";
}
else if (method.IsAssembly)
{
access = "Internal";
}
else if (method.IsFamilyAndAssembly)
{
access = "Protected Internal";
}
if (method.IsStatic)
{
stat = " Static";
}
}
var output = $"{member.Name} ({member.MemberType}): {access}{stat}, Declared by {member.DeclaringType}";
Console.WriteLine(output);
}
WriteLine();
SimpleClass sc = new SimpleClass();
WriteLine(sc.ToString());
WriteLine();
// 继承和“is a”关系
var packard = new Automobile("Packard", "Custom Eight", 1948);
WriteLine(packard);
WriteLine();
// 设计基类及其派生类
var book1 = new Book(
"The Tempest",
"0971655819",
"Shakespeare, William",
"Public Domain Press"
);
ShowPublicationInfo(book1);
book1.Publish(new DateTime(2016, 8, 18));
ShowPublicationInfo(book1);
var book2 = new Book(
"The Tempest",
"Classic Works Press",
"Shakespeare, William"
);
WriteLine(
$"{book1.Title} and {book2.Title} are the same publication: "
+ $"{((Publication) book1).Equals(book2)}"
);
WriteLine();
// 设计抽象基类及其派生类
Shape[] shapes =
{
new Rectangle(10, 12),
new Square(5),
new Circle(3),
};
foreach (var shape in shapes)
{
WriteLine($"{shape}: area, {Shape.GetArea(shape)}; " +
$"perimeter, {Shape.GetPerimeter(shape)}");
var rect = shape as Rectangle;
if (rect != null)
{
WriteLine($" Is Square: {rect.IsSquare()}, Diagonal: {rect.Diagonal}");
continue;
}
var sq = shape as Square;
if (sq != null)
{
WriteLine($" Diagonal: {sq.Diagonal}");
continue;
}
}
}