Method char_len

crates/vm/src/stdlib/_io.rs:3640–3646

(&self)

                #[inline]
                fn char_len(&self) -> usize {
                    if self.is_full_slice() {
                        self.0.char_len()
                    } else {
                        self.slice().code_points().count()
                    }
                }

                #[inline]
                fn is_full_slice(&self) -> bool {