nsregularexpression

How to extract the value "6" between the "badgeCount" tags using NSRegularExpression. Following is the response from the server: <?xml version="1.0" encoding="UTF-8" standalone="yes"?><badgeCount>6</badgeCount><rank>2</rank><screenName>myName</screenName> Following is the code I tried but not getting success. Actually it goes in else part and prints "Value of regex is nil": NSString *responseString = [[NSString alloc] initWithBytes:[responseDataForCrntUser bytes] length:responseDataForCrntUser.length encoding:NSUTF8StringEncoding]; NSError *error; NSRegularExpression *regex =

I'm having trouble getting NSRegularExpression to match patterns on strings with wider (?) Unicode characters in them. It looks like the problem is the range parameter -- Swift counts individual Unicode characters, while Objective-C treats strings as if they're made up of UTF-16 code units. Here is my test string and two regular expressions: let str = "dog🐶🐮cow" let dogRegex = NSRegularExpression(pattern: "d.g", options: nil, error: nil)! let cowRegex = NSRegularExpression(pattern: "c.w", options: nil, error: nil)! I can match the first regex with no problems: let dogMatch = dogRegex

I have a string like: ?key=123%252Bf-34Fa&name=John ?name=Johon&key=123%252Bf-34Fa I want to get the value for the key ,I use this NSRegularExpression (?i)(?<=key=)[.?!&]+[?=&]?? What I think is that the pattern is like matching any character except "&".But the result is always NULL . the value of each key can have anything except "&". So How can I create the correct NSRegularExpression? thanks. You shouldn't use a regex for this, specially if you don't know how. Compare: NSString *string = @"?name=Johon&key=123%252Bf-34Fa"; // NSString *string = @"?key=123%252Bf-34Fa&name=John"; // one way

I'd building an app that uses hashtags, like Twitter or Tweetbot. When you're typing a message, if you type the hashtag symbol, I'd like to suggest tags that match the current one you're typing. I've already figured out how to get the UITableView to appear and show a list of hashtags, but what I can't figure out is how to do the following: Get the NSRange of the current word being typed, See if that range is formatted like a hashtag ( NSRegularExpression @"#\\w\\w*" ) (From here on out, I've got the code figured out to search for matching hashtags and show them in the UITableView) Can anyone

What are the correct regular expressions using NSRegularExpression for syntax highlighting? The following test must be passed: code // comment code /* comment */ code code "string" code code // comment code code /* comment comment */ code code "string code" string code "string\ string" code code // comment "comment" code /* comment "comment" */ code code "string /* string */ // string" code code // comment "string" code /* comment "comment" */ code code "string /* comment */ // comment" string code "string\ /* string */ // string" code code // comment // comment code /* comment /* comment */

I want to find out a string in which a particular tag does not occur, such as: <xyz>[\w]+<[^(unwanted)]></xyz> where unwanted will be interpreted as a , d , e , n , t and u . But what I want is a block string. How can I express it in regular expression? I have tried negative lookahead, which doesn't work: <xyz>.+(?!unwanted).+</xyz> <xyz>(?:(?!unwanted).)+</xyz> Matches all chars in <xyz>...</xyz> , but only as long as the expression unwanted doesn't start at any of them. 来源： https://stackoverflow.com/questions/14819125/regular-expression-block-negation