NAME

lua_isuserdata — check whether a value is a userdata, function indicator [-0, +0, -]

SYNOPSIS

#include <lua.h>

int
lua_isuserdata(lua_State *L, int index);

DESCRIPTION

lua_isuserdata() returns 1 if the value at the given acceptable index is a userdata (either full or light), and 0 otherwise.

RETURN VALUES

Returns 1 if the value at the given acceptable index is a userdata (either full or light), and 0 otherwise.

SEE ALSO

Roberto Ierusalimschy, Luiz Henrique de Figueiredo, and Waldemar Celes, Lua 5.1 Reference Manual.

HISTORY

The lua_isuserdata() manual page is based on Lua Reference Manual 5.1 and was created by Sergey Bronnikov.