Method expand

regex/src/re_unicode.rs:962–964

Expands all instances of `$name` in `replacement` to the corresponding capture group `name`, and writes them to the `dst` buffer given. `name` may be an integer corresponding to the index of the capture group (counted by order of opening parenthesis where `0` is the entire match) or it can be a name (consisting of letters, digits or underscores) corresponding to a named capture group. If `name`

(&self, replacement: &str, dst: &mut String)

    ///
    /// To write a literal `$` use `$$`.
    pub fn expand(&self, replacement: &str, dst: &mut String) {
        expand_str(self, replacement, dst)
    }

    /// Returns the number of captured groups.
    ///