Crate slice_copy

This crate provides Go style copying / cloning for slices.

This crate is for those times where it is easier to adjust slices based off the number of elements copied, as opposed to determining the amount to copy before adjusting slices and finally copying.

Examples

We can use copy for types that implement Copy.

use slice_copy::copy;

let mut l = b"hello".to_vec();
let r = b"goodbye".to_vec();

let n = copy(&mut l, &r);

assert_eq!(n, 5);
assert_eq!(l, b"goodb");

Similarly, we can use clone for types that implement Clone.

use slice_copy::clone;

let mut l = b"foobarbaz".to_vec();
let r = b"biz".to_vec();

let n = clone(&mut l, &r);

assert_eq!(n, 3);
assert_eq!(l, b"bizbarbaz");

Functions

clone

Clones as many T as possible from src into dst, returning the number of T cloned. This function is short form for dst.clone_from_slice(src), but accounts for if their lengths are unequal to avoid panics.

copy

Copies as many T as possible from src into dst, returning the number of T copied. This function is short form for dst.copy_from_slice(src), but accounts for if their lengths are unequal to avoid panics.