Question

I hope it can be done with “NSPredicate”. I have array of strings in thousands and i want to split into array using string length. i.e. Strings with length 2 will come into an array. Strings with length 3 will come in an array so on. Is it possible using “NSPredicate”. I checked NSPredicate Class Reference. But could not find useful example.

Thanks
Neal

Answer 1

I hope following code solve your problem.

 NSString *regExp = @"[A-Z0-9a-z]{2,3}";
 NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regExp];

    NSMutableArray *array=[NSMutableArray new];
    [array addObject:@"ABC"];
    [array addObject:@"AGADF"];
    [array addObject:@"ADFADS"];
    [array addObject:@"DD"];
    [array addObject:@"DFA"];

    NSArray *filtered = [array filteredArrayUsingPredicate:predicate];

    NSLog(@"filter : %@",filtered);