pub fn str_len(state: &mut LuaState) -> Result<usize, LuaError>Expand description
string.len(s) — return byte-length of s.
C: static int str_len(lua_State *L)
Reads only the byte-length, never the bytes themselves, so go through
to_lua_string_len (which never copies) rather than check_arg_string
(which to_vecs the entire payload only for .len() to throw it away).