Function array_tools::try_init_from_slice

pub fn try_init_from_slice<T, A>(slice: &[T]) -> Option<A> where
    A: FixedSizeArray<T>,
    T: Clone, 

Attempts to create instance of array from slice.

• If slice length is less than array length, this function returns None.
• If slice length is greater or equal to array length, this function returns Some(array).

This function clones slice elements.

Examples

Not enough elements case.

use array_tools::try_init_from_slice;

let source = [1, 2, 3, 4, 5, 6];

let maybe_array: Option<[u64; 8]> = try_init_from_slice(&source);

assert_eq!(maybe_array, None);

Enough or excessive elements case.

use array_tools::try_init_from_slice;

let source = [1, 2, 3, 4, 5, 6];

let maybe_array: Option<[u64; 4]> = try_init_from_slice(&source);

assert_eq!(maybe_array, Some([1, 2, 3, 4]));