Method ToGoFunction

lua.go:829–837

ToGoFunction converts a value at index into a Go function. That value must be a Go function, otherwise it returns nil. http://www.lua.org/manual/5.2/manual.html#lua_tocfunction

(index int)

//
// http://www.lua.org/manual/5.2/manual.html#lua_tocfunction
func (l *State) ToGoFunction(index int) Function {
	switch v := l.indexToValue(index).(type) {
	case *goFunction:
		return v.Function
	case *goClosure:
		return v.function
	}
	return nil
}

// ToUserData returns an interface{} of the userdata of the value at index.
// Otherwise, it returns nil.