Method CheckChannel

auxlib.go:441–448

Checks whether the given index is an LChannel and returns this channel.

(n int)

// Checks whether the given index is an LChannel and returns this channel.
func (ls *LState) CheckChannel(n int) chan LValue {
	v := ls.Get(n)
	if ch, ok := v.(LChannel); ok {
		return (chan LValue)(ch)
	}
	ls.TypeError(n, LTChannel)
	return nil
}

// If the given index is a LChannel, returns this channel. If this argument is absent or is nil, returns ch. Otherwise, raises an error.
func (ls *LState) OptChannel(n int, ch chan LValue) chan LValue {