Debug.setupvalue

Available since: Gideros 2011.6

Description

This function assigns the value value to the upvalue with index up of the function func. The function returns nil if there is no upvalue with the given index. Otherwise, it returns the name of the upvalue.

(string), = debug.setupvalue(funcupvalue,)

'func: (function) function to set the upvalue for '
'up: (number) index of the upvalue '
'value: (varies) value to set as upvalue '
Returns (string) name of the upvalue or nil