Function join_iterator_and_add_back 

pub fn join_iterator_and_add_back<T: ToString + Sized, U: Iterator<Item = T>, S: Into<String>>(
    list: U,
    sep: S,
) -> String

Join iterators over string types using the given separator and add separator at the end

This function can be used to join iterators over string types using the given separator. The separator can be any string, including an empty string. It will also be appended to the end of the resulting string, except if the string is empty.

Example

use taco_display_utils::join_iterator_and_add_back;

let list = vec!["a", "b", "c"];
assert_eq!(join_iterator_and_add_back(list.iter(), ", "), "a, b, c, ");

let list: Vec<&str> = vec![];
assert_eq!(join_iterator_and_add_back(list.iter(), ", "), "");