Method Next

lua.go:1191–1200

Next pops a key from the stack and pushes a key-value pair from the table at index, while the table has next elements. If there are no more elements, nothing is pushed on the stack and Next returns false. A typical traversal looks like this: Table is on top of the stack (index -1). l.PushNil() //

(index int)

//
// http://www.lua.org/manual/5.2/manual.html#lua_next
func (l *State) Next(index int) bool {
	t := l.indexToValue(index).(*table)
	if l.next(t, l.top-1) {
		l.apiIncrementTop()
		return true
	}
	// no more elements
	l.top-- // remove key
	return false
}

// Concat concatenates the n values at the top of the stack, pops them, and
// leaves the result at the top. If n is 1, the result is the single value