Function char_index_to_byte_index

std/src/strings.rs:77–79

Returns the byte offset of the given character position within `s`.

(s: &str, char_index: usize)

/// Returns the byte offset of the given character position within `s`.
fn char_index_to_byte_index(s: &str, char_index: usize) -> usize {
    s.char_indices().nth(char_index).map(|(i, _)| i).unwrap_or(s.len())
}

/// Returns the number of characters before the given byte offset within `s`.
fn byte_index_to_char_index(s: &str, byte_index: usize) -> usize {