pub fn kmerge_by<I, F>(
    iterable: I,
    less_than: F,
) -> KMergeBy<<I::Item as IntoIterator>::IntoIter, F> ⓘwhere
    I: IntoIterator,
    I::Item: IntoIterator,
    F: KMergePredicate<<<I as IntoIterator>::Item as IntoIterator>::Item>,Expand description
Create an iterator that merges elements of the contained iterators.
IntoIterator enabled version of Itertools::kmerge_by.