Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Objective-C Basics (Retired) Foundation Framework NSString

Paul Card
PLUS
Paul Card
Courses Plus Student 4,806 Points
Posted by Paul Card
Paul Card
Courses Plus Student 4,806 Points

stringByAppendingString

Hi Guys-

What's wrong here? Can't get this to pass Task 3 of the NSString Challenge:

NSString *color = @"purple";
NSString *preference = @"My favorite color is";
NSString *favorite = [color stringByAppendingString:preference];

Keep getting: favorite as wrong value...

2 Answers

Dino Paลกkvan
PLUS
Dino Paลกkvan
Courses Plus Student 44,108 Points
Dino Paลกkvan
Dino Paลกkvan
Courses Plus Student 44,108 Points

You are appending preference to color which results in "purpleMy favourite color is ".

You should call the method on preference and pass color as the parameter:

NSString *favorite = [preference stringByAppendingString:color];
Paul Card
PLUS
Paul Card
Courses Plus Student 4,806 Points
Paul Card
Paul Card
Courses Plus Student 4,806 Points

Thanks very much Dino! I really appreciate the help.