Function fmty::join_map

pub fn join_map<I, S, R, F>(iter: I, sep: S, f: F) -> JoinMap<I::IntoIter, S, F>where
    I: IntoIterator,
    I::IntoIter: Clone,
    F: Fn(I::Item) -> R,

Concatenates mapped Iterator results with a separator between each.

Unlike join(iter.map(f), sep), this function does not require the mapping closure to be Clone.

If Clone for the Iterator is too expensive, consider using join_map_once().

Examples

let value = fmty::join_map(["hola", "mundo"], " ", fmty::to_ascii_uppercase);
assert_eq!(value.to_string(), "HOLA MUNDO");