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iOS

Posted by Sam Hermes
Sam Hermes
20,862 Points

Using a Custom Class quiz

I'm stuck on a question in the Data Modeling badge.

The question asks: Create an instance of the Song class with the convenience constructor songWithSinger:(NSString *)s and singer named "James Brown".

I believe that the answer should be: Song *popSong = [[Song alloc] songWithSinger: @"James Brown"];

I've been researching this, and I'm just not sure what I'm doing incorrectly.

10 Answers

Michael Reining
Michael Reining
10,101 Points
Michael Reining
Michael Reining
10,101 Points

This quiz was hard for me. I finally figured it out.

// basic
Song *popSong = [[Song alloc] init];


// convenience constructor
Song *popSong = [Song songWithSinger:@"James Brown"];


// initialize
[[Song alloc] initWithSinger:@"James Brown"];
James Godwin
James Godwin
936 Points
James Godwin
James Godwin
936 Points

Its a bug, you have to make sure that there are no spaces after the colon and it should work http://teamtreehouse.com/forum/data-modeling-using-a-custom-class

Sam Hermes
Sam Hermes
20,862 Points
Sam Hermes
Sam Hermes
20,862 Points

I figured it out. I don't need to use alloc because of the convenience constructor.

Chris Da Sie
Chris Da Sie
5,374 Points
Chris Da Sie
Chris Da Sie
5,374 Points

Then your statement should look like [Song songWithSinger: @"James Brown"]; ?

I've tried both methods and still seem to be getting it wrong. Am I missing something here?

James Godwin
James Godwin
936 Points
James Godwin
James Godwin
936 Points

I'm having the same trouble - did you solve this in the end?

Rajeev Sharma
Rajeev Sharma
1,597 Points
Rajeev Sharma
Rajeev Sharma
1,597 Points

Same here. Whats up here?

Oscar Morrison
Oscar Morrison
11,211 Points
Oscar Morrison
Oscar Morrison
11,211 Points

Please fix this! Just wasted half an hour before google it. This is a frivolous bug that should be addressed

eirikvaa
eirikvaa
18,015 Points
eirikvaa
eirikvaa
18,015 Points

I can confirm that the bug is still there.

James Carney
James Carney
16,255 Points

And... the bug is still there.

Andrew Kelly
Andrew Kelly
4,738 Points
Andrew Kelly
Andrew Kelly
4,738 Points

The bug is still there. I couldn't figure out what I was doing wrong until I found this post.

Misha Shaposhnikov
Misha Shaposhnikov
8,718 Points
Misha Shaposhnikov
Misha Shaposhnikov
8,718 Points

Bug is still there. Please fix this. =)