Method truncate

crates/wtf8/src/lib.rs:503–506

(&mut self, new_len: usize)

    /// or if `new_len` is not a code point boundary.
    #[inline]
    pub fn truncate(&mut self, new_len: usize) {
        assert!(is_code_point_boundary(self, new_len));
        self.bytes.truncate(new_len)
    }

    /// Inserts a codepoint into this `Wtf8Buf` at a byte position.
    #[inline]