Function copy_in_place::copy_in_place

pub fn copy_in_place<T: Copy>(
    slice: &mut [T], 
    src: usize, 
    dest: usize, 
    count: usize
)

Copies elements from one part of a slice to another part of the same slice, using a memmove.

src is the starting index of the source region. dest is the starting index of the destination region. count is the number of elements in both regions. The two regions may overlap.

The ends of the two regions, src + count and dest + count, must be less than or equal to self.len().

Panics

This function will panic if either region exceeds the end of the slice.

Examples

Copying four bytes within a slice:

let mut bytes = *b"Hello, World!";

copy_in_place(&mut bytes, 1, 8, 4);

assert_eq!(&bytes, b"Hello, Wello!");