Useful String extensions

String+Extensions.swift

//
//  String+Extensions.swift
//

import Foundation

extension String {
    var isEmail: Bool {
        // https://www.tutorialspoint.com/email-and-phone-validation-in-swift
        let regularExpressionForEmail = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
        let testEmail = NSPredicate(format: "SELF MATCHES %@", regularExpressionForEmail)
        return testEmail.evaluate(with: self)
    }
}