Macro generic_vec::gvec

macro_rules! gvec {
    ($expr:expr; $n:expr) => { ... };
    ($($expr:expr),*) => { ... };
}

Create a new generic vector

Because this can create any generic vector, you will likely need to add some type annotations when you use it,

let x: TypeVec<i32, [i32; 4]> = gvec![1, 2, 3, 4];
assert_eq!(x, [1, 2, 3, 4]);