Function iter_tools::intersperse

pub fn intersperse<I>(
    iterable: I,
    element: <I as IntoIterator>::Item
) -> IntersperseWith<<I as IntoIterator>::IntoIter, IntersperseElementSimple<<<I as IntoIterator>::IntoIter as Iterator>::Item>>
where
    I: IntoIterator,
    <I as IntoIterator>::Item: Clone,

Iterate iterable with a particular value inserted between each element.

IntoIterator enabled version of Iterator::intersperse.

use itertools::intersperse;

itertools::assert_equal(intersperse((0..3), 8), vec![0, 8, 1, 8, 2]);