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

cameryn smith
cameryn smith
2,828 Points
Posted by cameryn smith
cameryn smith
2,828 Points

How do you know the return type of a method?

Oh yea, and when would you want a method to return void?

3 Answers

Alfian Losari
Alfian Losari
9,495 Points
Alfian Losari
Alfian Losari
9,495 Points

It depends, if you use an Object which is based on Cocoa Framework, then you must refer to the documentation of the class to know the return type of a method in Class. Here is the basic concept to read a method in Objective-C:

  • (returnType) methodName:parameter1 ...:parameter2 ...:parameter3 ....;
Alfian Losari
Alfian Losari
9,495 Points
Alfian Losari
Alfian Losari
9,495 Points

You use void when you do not expect your method to return anything. You just want to run all the code in the method.Here is the example:

  • (void)printDate: { NSLog(@"Date is %@", [NSDate Date]); }
cameryn smith
cameryn smith
2,828 Points
cameryn smith
cameryn smith
2,828 Points

Thanks so much I'm getting it more as I go :)