NAME

lua_gettop — returns the index of the top element in the stack, function indicator [-0, +0, -]

SYNOPSIS

#include <lua.h>

int
lua_gettop(lua_State *L);

DESCRIPTION

lua_gettop() returns the index of the top element in the stack. Because indices start at 1, this result is equal to the number of elements in the stack (and so 0 means an empty stack).

RETURN VALUES

Returns the index of the top element in the stack.

SEE ALSO

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

HISTORY

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