leonardo-m

// Port of the C# 101 LINQ Samples rewritten into Apple's Swift 3.

#![feature(ordering_chaining, step_by)]

fn main() {
    // linq5: Where - Indexed
    /*
    //c#
    public void Linq5()
    {

maiermic

Variance

The term variance describes how subtyping between higher kinded types is related to subtyping relations of their type arguments.

Higher Kinded Types

A higher kinded type composes type arguments to a new type. I use square bracket notation to define a higher kinded type:

C[T] // The higher kinded type `C` composes type argument `T` to a new type `C[T]`.

The same works with multiple type arguments: