Function merge

pub fn merge<I, J>(
    i: I,
    j: J,
) -> MergeBy<<I as IntoIterator>::IntoIter, <J as IntoIterator>::IntoIter, MergeLte> 
where
    I: IntoIterator,
    J: IntoIterator<Item = <I as IntoIterator>::Item>,
    <I as IntoIterator>::Item: PartialOrd,

Available on crate feature dep_itertools only.

Create an iterator that merges elements in i and j.

IntoIterator enabled version of Itertools::merge.

use itertools::merge;

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