Function luaL_optlstring

src/Chain/libraries/glua/lauxlib.cpp:400–408

LUALIB_API const char *luaL_optlstring(lua_State *L, int arg,
    const char *def, size_t *len) {
    if (lua_isnoneornil(L, arg)) {
        if (len)
            *len = (def ? strlen(def) : 0);
        return def;
    }
    else return luaL_checklstring(L, arg, len);
}


LUALIB_API lua_Number luaL_checknumber(lua_State *L, int arg) {