Method Concat

lua.go:1209–1216

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 on the stack (that is, the function does nothing); if n is 0, the result is the empty string. Concatenation is performed following the usual semantic of Lu

(n int)

//
// http://www.lua.org/manual/5.2/manual.html#lua_concat
func (l *State) Concat(n int) {
	l.checkElementCount(n)
	if n >= 2 {
		l.concat(n)
	} else if n == 0 { // push empty string
		l.apiPush("")
	} // else n == 1; nothing to do
}

// Register sets the Go function f as the new value of global name. If
// name was already defined, it is overwritten.