我可以阻止我的捕獲組被覆蓋嗎？

我試圖捕獲電話號碼內使用的第一個分隔符，以便確定用作數字內部分隔符的內容以及用於分隔兩個數字的內容。我可以阻止我的捕獲組被覆蓋嗎？

現在我可以識別最後的分隔符。每次拾取新值時，捕獲組似乎都會被覆蓋。無論如何保留使用國旗或特定快速方法首先捕獲的內容？

(?:\\d([\\-\\. ])?){7,15}

斯威夫特方法

func regexParse(pattern:String, captureGroup:Int, caseSensitive:Bool) ->[String] 
{ 
    do 
    { 
     //Creates empty results array. 
     var resultsArray = [String]() 

     //Sets Case sensitivity 
     var caseSensitivity = NSRegularExpressionOptions.CaseInsensitive 
     if(caseSensitive) 
     { 
      caseSensitivity = NSRegularExpressionOptions.init(rawValue: 0) 
     } 

     //Sets regex to correct pattern 
     let regex = try NSRegularExpression(pattern: pattern, options: caseSensitivity) 
     //Converts string to NSString as swift doesn't support regex 
     let nsString = self as NSString 

     //Sets parsing range to the entire string 
     let all = NSMakeRange(0, nsString.length) 

     //Enumerates through all matches and extracts the 1st capture bracket for each match and adds it to the resultsArray. 

     regex.enumerateMatchesInString(self, options: NSMatchingOptions(rawValue: 0), range: all) { (result: NSTextCheckingResult?, _, _) in 
      let capturedRange = result!.rangeAtIndex(captureGroup) 
      if !NSEqualRanges(capturedRange, NSMakeRange(NSNotFound, 0)) 
      { 
       let theResult = nsString.substringWithRange(capturedRange) 
       resultsArray.append(theResult) 
      } 
     } 
     return resultsArray 

    } 
    catch 
    { 
     print("Invalid regex") 
     return(["Error"]) //Maybe refactor this for something that's impossible to be a valid result 
    } 
}

來源

2016-05-12 Deco

[像這樣]（https://regex101.com/r/rF5qJ7/4）？ –

@ThomasAyoub完美的感謝，隨時把它作爲答案。 – Deco

您需要使用這個表達式：

\d+([-. ])[-.\d]*

要獲取分隔符，這將在捕獲組中

來源

2016-05-12 10:47:57

我可以阻止我的捕獲組被覆蓋嗎？

回答

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