This package contains just four macros, which enable the creation of array references to portions of arrays or slices (or things that can be sliced).

Examples

Here is a simple example of slicing and dicing a slice into array references with these macros. Here we implement a simple little-endian conversion from bytes to u16, and demonstrate code that uses array_ref! to extract an array reference from a larger array. Note that the documentation for each macro also has an example of its use.

#[macro_use]
extern crate arrayref;

fn read_u16(bytes: &[u8; 2]) -> u16 {
     bytes[0] as u16 + ((bytes[1] as u16) << 8)
}
// ...
# fn main() {
let data = [0,1,2,3,4,0,6,7,8,9];
assert_eq!(256, read_u16(array_ref![data,0,2]));
assert_eq!(4, read_u16(array_ref![data,4,2]));
# }