NAME

lua_setupvalue — sets the value of a closure's upvalue, function indicator [- (0|1), +0, -]

SYNOPSIS

#include <lua.h>

const char *
lua_setupvalue(lua_State *L, int funcindex, int n);

DESCRIPTION

lua_setupvalue() sets the value of a closure's upvalue. It assigns the value at the top of the stack to the upvalue and returns its name. It also pops the value from the stack. Parameters funcindex and n are as in the lua_getupvalue(3).

RETURN VALUES

Returns NULL (and pops nothing) when the index is greater than the number of upvalues.

SEE ALSO

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

HISTORY

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