Function itertools::free::chain

pub fn chain<I, J>(i: I, j: J) -> Chain<I::IntoIter, J::IntoIter> where I: IntoIterator, J: IntoIterator<Item=I::Item>

Create an iterator that first iterates i and then j.

IntoIterator enabled version of i.chain(j).

use itertools::free::chain;

for elt in chain(&[1, 2, 3], &[4]) {
    /* loop body */
}