Swift: Switch on Regex! Adapted from https://gist.github.com/feighter09/d731cad53bd3622b8361

Regex.swift

protocol RegularExpressionMatchable {
	func match(regex: NSRegularExpression) -> Bool
}

extension String: RegularExpressionMatchable {
	func match(regex: NSRegularExpression) -> Bool {
		let range = NSMakeRange(0, self.count)
		let matches = regex.numberOfMatches(in: self, range: range)

		return matches > 0
	}
}

func ~=<T: RegularExpressionMatchable>(pattern: NSRegularExpression, matchable: T) -> Bool {
	return matchable.match(regex: pattern)
}