Swift: combining varargs and autoclosure

gistfile1.swift

// This compiles:
func immediateOr(args:Bool...) -> Bool {
	for arg in args {
		if arg {
			return true
		}
	}
	return false
}

// A. This doesn't compile:
func lazyOr(args: @autoclosure() -> Bool...) -> Bool {
	for arg in args { // "Error: Function produces expected type '[@autoclosure() -> Bool]'"
		if arg() {
			return true
		}
	}
	return false
}

// B. This doesn't compile (typealias):
typealias LazyPredicate = @autoclosure() -> Bool
func lazyOr(args: LazyPredicate...) -> Bool {
	for arg in args { // "Error: Function produces expected type '[@autoclosure() -> Bool]'"
		if arg() {
			return true
		}
	}
	return false
}

// C. This doesn't compile (parenthesize):
func lazyOr(args: (@autoclosure() -> Bool)...) -> Bool {
	for arg in args { // "Error: Function produces expected type '[@autoclosure() -> Bool]'"
		if arg() {
			return true
		}
	}
	return false
}

// D. This "works"...
func lazyOr(args: (@autoclosure() -> Bool, Int)...) -> Bool {
	for arg in args {
		if arg.0() {
			return true
		}
	}
	return false
}
lazyOr((expensiveA(), 42), (expensiveB(), 42))

I was excited when I saw the comment by @vivekseth, but I've now tried it and it looks like it doesn't work with Swift 3.