nessa-language 0.9.1

An extensible programming language with a strong type system
Documentation 
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/*
    Simple parametric implementation
*/

interface HasOp<A, B> {
    fn<R> example(a: 'A, b: 'B) -> ('R, Self);
}

fn example(a: Int, b: Int) -> (Bool, Int) {
    return (a + b < 5, 5);
}

implement HasOp<Int, Int> for Int;

fn<T> example(a: Array<Int>, b: Array<'T>) -> (Int, Array<Int>) {
    return (5, *a);
}

implement HasOp<Array<Int>, Array<Float>> for Array<Int>;

/*
    Full parametric implementation
*/

interface Addable {
    fn add(a: Self, b: Self) -> Self;
}

fn add(a: Int, b: Int) -> Int {
    return a + b;
}

fn add(a: Float, b: Float) -> Float {
    return a + b;
}

implement Addable for Int;
implement Addable for Float;

fn<T> add(a: Array<'T [Addable]>, b: Array<'T [Addable]>) -> Array<'T [Addable]> {
    return arr<'T>();
}

// Parametric implementation
implement<T> Addable for Array<'T [Addable]>;

let arr_1 = arr<Int>();

add(*arr_1, *arr_1);

let arr_2 = arr<Float>();

add(*arr_2, *arr_2);

fn<T> test(v: 'T [Addable]) -> Bool {
    return true;
}

test(1);
test(2.5);
test(*arr_1);
test(*arr_2);