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 Build a Blog Reader iPhone App Data Modeling Designated Initializers and Convenience Constructors

Shaun Kelly
Shaun Kelly
5,648 Points
Posted by Shaun Kelly
Shaun Kelly
5,648 Points

Answer for question 4 on this quiz ?

Declare a method which is a convenience constructor for the class Song. The method calls a designated initializer named: initWithSinger: (NSString*) singer

@interface Song : NSObject

  • ( id ) initWithSinger: (NSString*) singer;
  • ( id ) : (NSString*) singer;

1 Answer

Caleb Kleveter
MOD
Caleb Kleveter
Treehouse Moderator 37,862 Points
Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points

Notice the "@interface Song : NSObject"; in the video previous to the quiz the @interface said BlogPost instead of Song and Amit wrote blogPostWithTitle, so the answer is songWithSinger. Hope that makes sense!