SWIFT中Regex驗證郵箱

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在playground內寫入以下代碼，正則關鍵字跟其它語言的沒什麼區別

class Regex {    let internalExpression:NSRegularExpression    let pattern:String        init(pattern:String) {        self.pattern = pattern        var error:NSError?        self.internalExpression = NSRegularExpression(pattern: pattern, options: NSRegularExpressionOptions.CaseInsensitive, error: &error)!    }        func match(input:String) -> Bool {        let matches = self.internalExpression.matchesInString(input, options: nil, range: NSMakeRange(0, count(input)))        return matches.count > 0    }}var email_regex = "^[a-zA-Z0-9]+([._\\-])*[a-zA-Z0-9]*@([a-zA-Z0-9])+(.([a-zA-Z])+)+$"var regex = Regex(pattern:email_regex)regex.match("[email protected]")  //RETURN true
regex.match("[email protected]") //RETURN true
regex.match("[email protected]") //RETURN true

 

SWIFT中Regex驗證郵箱