String compare Objective-C

Question

I\'ve been struggling with a simple comparison but I can\'t get it to work. I´m reading a XML file and I need to compare data from it in order to show the right picture.

Answer 1

You can use the NSString compare: methods. For example:

if ([myString caseInsensitiveCompare:@"A"] == NSOrderedSame ) {
    NSLog(@"The same");
} else {
    NSLog(@"Not the same.");
}

The result is an NSComparisonResult which is just an enum with types NSOrderedSame, NSOrderedAscending and NSOrderedDescending.

Check the documentation on the various compare: methods here.

Of course, if the receiver is actually an NSString, then isEqualToString: should also work. So if you're trying to compare a class name (aLarm.larmClass ??), then you can call:

if ([NSStringFromClass([aLarm class]) isEqualToString:@"A"] ) {
    NSLog(@"The same");
}