Velcro

A drop-in replacement for the vec! macro provided by std. All functionality of the std macro is supported, but multiple values may be added in a single expression, preceding expressions with the .. operator. In order to be spread with this operator, values must implement IntoIterator.

Examples

use velcro::vec;

assert_eq!(vec![..0..7], vec![0, 1, 2, 3, 4, 5, 6]);
assert_eq!(vec![0, 1, ..2..7], vec![0, 1, 2, 3, 4, 5, 6]);

let other = vec![3, 4, 5];
assert_eq!(vec![0, 1, 2, ..other, 6], vec![0, 1, 2, 3, 4, 5, 6]);

let mut it = (0..=3).into_iter().map(|x| x + 2);
assert_eq!(vec![0, 1, ..it, 6], vec![0, 1, 2, 3, 4, 5, 6]);