nsstring

If I want to get a value from the NSString @"value:hello World:value" , what should I use? The return value I want is @"hello World" . Regexident Option 1: NSString *haystack = @"value:hello World:value"; NSString *haystackPrefix = @"value:"; NSString *haystackSuffix = @":value"; NSRange needleRange = NSMakeRange(haystackPrefix.length, haystack.length - haystackPrefix.length - haystackSuffix.length); NSString *needle = [haystack substringWithRange:needleRange]; NSLog(@"needle: %@", needle); // -> "hello World" Option 2: NSRegularExpression *regex = [NSRegularExpression

I have an unsigned long long value which I want to store into an NSString and retrieve from the string. Initially I have the value in an NSNumber and I am using this to get the string NSString *numStr = [NSString stringWithFormat:@"%llu", [myNum unsignedLongLongValue]]; where myNum is an NSNumber. To get back the NSNumber from the NSString I have to first get the unsigned long long value. But there is no method in the NSString class to do that (we just have one for getting the long long value, not the unsigned long long value). Can someone please tell me how I can get back the value into an

I have a string as shown below, NSString * aString = @"This is the #substring1 and #subString2 I want"; How can I select only the text starting with '#' (and ends with a space), in this case 'subString1' and 'subString2'? Note: Question was edited for clarity You can do this using an NSScanner to split the string up. This code will loop through a string and fill an array with substrings. NSString * aString = @"This is the #substring1 and #subString2 I want"; NSMutableArray *substrings = [NSMutableArray new]; NSScanner *scanner = [NSScanner scannerWithString:aString]; [scanner scanUpToString:@"

Is it possible to use an NSString in a switch statement? Or is it better to just use if / else if ? switch statement requires integer constants for it cases so NSString cannot be used here, so it seems you have to go for if/else option. One more point is you must compare NSStrings using isEqualToString: or compare: method, so even if pointer values have been allowed for switch cases you could not use them anyway user1717750 I use these macros in my app. #define CASE(str) if ([__s__ isEqualToString:(str)]) #define SWITCH(s) for (NSString *__s__ = (s); ; ) #define DEFAULT SWITCH (string) { CASE