Function boxarray::boxarray

pub fn boxarray<E: Copy, L: CUList, T: Arrays<E, L>>(e: E) -> Box<T>

The boxarray function allow to allocate and initialize nested arrays directly on the heap inside a Box.

Examples

Single array.

fn signle_array() {
    let a: Box<[u32; 10]> = boxarray::boxarray(1);
    assert_eq!(*a, [1u32; 10]);
}

Nested array.

fn nested_array() {
    let a: Box<[[[f64; 10]; 2]; 4]> = boxarray::boxarray(7.0);
    assert_eq!(*a, [[[7f64; 10]; 2]; 4]);
}

If the type of the value to initialize with does not correspond, a compiler will be raised.

fn nested_array_wrong_type() {
    let a: Box<[[[f64; 10]; 2]; 4]> = boxarray::boxarray(7.0f32);
    assert_eq!(*a, [[[7f64; 10]; 2]; 4]);
}

If the type to initialize is not only composed of nested arrays, a compiler will be raised.

fn nested_array_wrong_type() {
    let a: Box<[[([f64; 10], [f64; 10]); 2]; 4]> = boxarray::boxarray(7.0);
    assert_eq!(*a, [[[7f64; 10]; 2]; 4]);
}