Function merge_join_by

pub fn merge_join_by<I, J, F>(
    left: I,
    right: J,
    cmp_fn: F,
) -> MergeJoinBy<<I as IntoIterator>::IntoIter, <J as IntoIterator>::IntoIter, F> 
where
    I: IntoIterator,
    J: IntoIterator,
    F: FnMut(&<I as IntoIterator>::Item, &<J as IntoIterator>::Item) -> Ordering,

Return an iterator adaptor that merge-joins items from the two base iterators in ascending order.

IntoIterator enabled version of [Itertools::merge_join_by].