Allow this keyword to be used as type argument

[martinrhan]

We usually have something like this

public class MyClass{
    public SomeGenericType<MyClass> MyProperty {get; set;}
}

Dependency property is a good example as well. Even with code snippet we still need to manually write down 'MyClass'. It is going to be nice if we can write

public class MyClass{
    public SomeGenericType<this> MyProperty {get; set;}
}

[sharpchen]

That's interesting. And what about this for builder pattern

public this WithArgs(string[] args) {
    // ...
    return this;
}

And for type parameter like

internal interface IResponse<TResponse, TData>
    where TResponse : this, new()
{
    TData? Data { get; set; }
    string Message { get; set; }
    bool Success { get; set; }
    abstract static implicit operator TResponse(TData data);
    abstract static implicit operator TData?(TResponse response);
}

public class ServiceResponse<T> : IResponse<this, T>
{
	public T? Data { get; set; }
	public bool Success { get; set; } = true;
	public string Message { get; set; } = string.Empty;

	public static implicit operator ServiceResponse<T>(T data) => new() { Data = data };
	public static implicit operator T?(ServiceResponse<T> response) => response.Data;
}

I don't really favor this, I don't think csharp will add much implicit stuff.
We don't even have return type inference for methods, and that's not really necessary to have.

[ufcpp]

#252