Method ToUserData

lua.go:843–848

ToUserData returns an interface{} of the userdata of the value at index. Otherwise, it returns nil. http://www.lua.org/manual/5.2/manual.html#lua_touserdata

(index int)

//
// http://www.lua.org/manual/5.2/manual.html#lua_touserdata
func (l *State) ToUserData(index int) interface{} {
	if d, ok := l.indexToValue(index).(*userData); ok {
		return d.data
	}
	return nil
}

// ToThread converts the value at index to a Lua thread (a State). This
// value must be a thread, otherwise the return value will be nil.