Question

How to check if an NSString contains the first letter as “#”. I mean if the string has #wiki it has to accept. Actually I am trying to validate twitter account details.

Please let me know how I can validate the NSString for this.

Answer 1

I think @Costique answer is best solution, and also you can use like below

 NSString *str = @"#i123";
        if([str rangeOfString:@"#"].location==0)
        {
            NSLog(@"YES");
        }
        else
        {
            NSLog(@"NO");
        }