Function replace

pub fn replace<'a, T: Display>(
    source: &'a str,
    from: &'a str,
    to: T,
) -> Replace<'a, T>

Replace instances of the from string with the to Display object.

Note: this function, contrary to its std equivalent str::replace, does not support the Pattern API because that API is not yet stabilized.

assert_eq!(replace("this is old", "old", "new").to_string(), "this is new");