| LUAL_OPTSTRING(3) | Library Functions Manual | LUAL_OPTSTRING(3) |
luaL_optstring —
if the function argument is a string, returns this string,
function indicator [-0, +0, v]
#include
<lauxlib.h>
const char *
luaL_optstring(lua_State
*L, int narg,
const char *d);
luaL_optstring()
if the function argument narg is a string, returns
this string. If this argument is absent or is nil,
returns d. Otherwise, raises an error.
Roberto Ierusalimschy, Luiz Henrique de Figueiredo, and Waldemar Celes, Lua 5.1 Reference Manual.
The luaL_optstring() manual page is based
on Lua Reference Manual 5.1 and was created by Sergey Bronnikov.
| July 26, 2022 | Debian |