Shortcuts in Objective-C to concatenate NSStrings

Question

Are there any shortcuts to (stringByAppendingString:) string concatenation in Objective-C, or shortcuts for working with NSString in general?

Answer 1

I keep returning to this post and always end up sorting through the answers to find this simple solution that works with as many variables as needed:

[NSString stringWithFormat:@"%@/%@/%@", three, two, one];

For example:

NSString *urlForHttpGet = [NSString stringWithFormat:@"http://example.com/login/username/%@/userid/%i", userName, userId];