How to extract the data I want in NSString? - objective-c

Question

I have a NSString like this:
456673\tSomething
But I would like to extract Something only.... ...
All the data must be in this format ....
xxxx\tyyyy
How can I split it bases on \t? thank you.

Answer 1

You may be looking for this instance method:
- (NSArray *)componentsSeparatedByString:(NSString *)separator
If that fails your needs and you want something more powerful, I can personally recommend RegexKitLite. RegexKitLite adds the power of regular expressions to NSString in the form of a category.

Answer 2

I've added a category to NSString for convenience (class: NSString+Utility):
- (NSString *)substringFromFirstOccurenceOfString:(NSString *)string {
NSRange range = [self rangeOfString:string];
if (range.location != NSIntegerMax) {
int index = range.location + range.length;
return [self substringFromIndex:index];
} else {
return self;
}
}
- (NSString *)substringFromLastOccurenceOfString:(NSString *)string {
NSRange range = [self rangeOfString:string options:NSBackwardsSearch];
if (range.location != NSIntegerMax) {
int index = range.location + range.length;
return [self substringFromIndex:index];
} else {
return self;
}
}
- (NSString *)substringToFirstOccurenceOfString:(NSString *)string {
NSRange range = [self rangeOfString:string];
if (range.location != NSIntegerMax) {
int index = range.location + range.length;
return [self substringToIndex:index];
} else {
return self;
}
}
- (NSString *)substringToLastOccurenceOfString:(NSString *)string {
NSRange range = [self rangeOfString:string options:NSBackwardsSearch];
if (range.location != NSIntegerMax) {
int index = range.location;
return [self substringToIndex:index];
} else {
return self;
}
}