Aliasing of Variables, Functions, and Types

Create an alias with the using keyword.
As in C++, but with extended scope.

Member Variable Alias

class Vector3<type T> : Vector<3, T> {
    using var x = data[0]
    using Int y = data[1]
    using T   z = data[2]
}

This is not quite possible in C++:
With T& z = data[2], unfortunately, memory is allocated for the reference (the pointer). And the compiler cannot optimize it away, because the reference could be rebound in the constructor.

Member Function Alias

class A : B {
    using func f(String) = g(String)
    using func f = g
}

using func f(String) = g(String) to alias the function g(String).
using func f = g to alias all overloads of the function g.

Type Alias in a Class

class String {
    using InParameterType = const StringView
}

(No typedef.)