我可以阻止我的捕获组被覆盖吗？

我试图捕获电话号码内使用的第一个分隔符，以便确定用作数字内部分隔符的内容以及用于分隔两个数字的内容。我可以阻止我的捕获组被覆盖吗？

现在我可以识别最后的分隔符。每次拾取新值时，捕获组似乎都会被覆盖。无论如何保留使用国旗或特定快速方法首先捕获的内容？

(?:\\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 
    } 
}

来源

2016-05-12 Deco

[像这样]（https://regex101.com/r/rF5qJ7/4）？ –

@ThomasAyoub完美的感谢，随时把它作为答案。 – Deco

您需要使用这个表达式：

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

要获取分隔符，这将在捕获组中

来源

2016-05-12 10:47:57

我可以阻止我的捕获组被覆盖吗？

回答

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