static void Main(string[] args)
{
#region Record types
NewSection("Record types");
var record1 = new DummyRecord("ABC");
var record2 = new DummyRecord("ABC");
Console.WriteLine("record1.Equals(record2) " + record1.Equals(record2));
Console.WriteLine("record1.GetHashCode() " + record1.GetHashCode() + " record2.GetHashCode()" + record2.GetHashCode());
var subRecord = new DummySubRecord("ABC", "D", "E");
Console.WriteLine("record1.Equals(subRecord) " + record1.Equals(subRecord));
Console.WriteLine("subRecord.ToString() " + subRecord);
var wow = new WoW("A", "B");
var(a, b) = wow;
Console.WriteLine("var wow = new WoW(\"A\", \"B\"); var (a, b) = wow; a:" + a + " b:" + b);
var wow2 = wow with {
BBB = "New B"
};
Console.WriteLine("vwow.ToString() " + wow.ToString());
Console.WriteLine("var wow2 = wow with { BBB = \"New B\" }; wow2.ToString() " + wow2.ToString());
Console.WriteLine("subRecord.GetType().IsAssignableTo(typeof(DummyRecord)) " + subRecord.GetType().IsAssignableTo(typeof(DummyRecord)));
#endregion Record types
#region Init only setters
NewSection("Init only setters");
var person = new Person
{
Name = "ABC"
};
Console.WriteLine(person.Name);
#endregion Init only setters
#region Pattern matching enhancements
NewSection("Pattern matching enhancements");
var isLetter = IsLetter('$');
Console.WriteLine("IsLetter " + isLetter);
var e = "ABC";
if (e is not null)
{
Console.WriteLine("e is not null");
}
else
{
Console.WriteLine("e is null");
}
foreach (var item in new object[] { "ABC", 123, new Person {
Name = "HAHA"
}, new Person {
Name = "WOWO"
}, new Person {
Name = "Somebody else"
} })
{
switch (item)
{
case string _:
Console.WriteLine("e is string");
break;
case int intE:
Console.WriteLine("e is int " + intE);
break;
case Person personE when personE.Name == "HAHA":
Console.WriteLine("e is Person " + personE.Name);
break;
case Person personD when personD.Name == "WOWO":
Console.WriteLine("e is Person " + personD.Name);
break;
case Person _:
Console.WriteLine("e is Person and not named as HAHA or WOWO");
break;
}
}
#endregion Pattern matching enhancements
#region Fit and finish features
NewSection("Fit and finish features");
List <int> list = new();
Console.WriteLine("List<int> list = new(); " + (list is not null));
HooHooHoo hoo = new("Hoo");
Console.WriteLine("HooHooHoo hoo = new(\"Hoo\"); " + (hoo is not null));
hoo.SayHiToPerson(new() { Name = "Mr. Curious" });
#endregion Fit and finish features
}