Function itertools::interleave 
source · pub fn interleave<I, J>(
    i: I,
    j: J
) -> Interleave<<I as IntoIterator>::IntoIter, <J as IntoIterator>::IntoIter> ⓘwhere
    I: IntoIterator,
    J: IntoIterator<Item = I::Item>,Expand description
Create an iterator that interleaves elements in i and j.
IntoIterator enabled version of [Itertools::interleave].