Objective-C

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TODO: The maintainers have not provided an introduction for this track.
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Track mentors

4 Mentors

Our mentors are friendly, experienced Objective-C developers who will help teach you new techniques and tricks.
Track students

865 Students

Join hundreds of students who have enjoyed learning and improving their skills by taking this track.
Track exercises

51 Exercises

Hundreds of hours have gone into making these exercises fun, useful, and challenging to help you enjoy learning.

About Objective-C

@interface HelloWorld : NSObject
- (NSString *)hello:(NSString *)name;
@end

@implementation HelloWorld
- (NSString *)hello:(NSString *)name {
  if (!name) { name = @"World"; }
  return [NSString stringWithFormat:@"Hello, %@!", name];
}
@end

Objective-C is a thin layer on top of C, and is a "strict superset" of C, meaning that it is possible to compile any C program with an Objective-C compiler, and to freely include C language code within an Objective-C class. Objective-C derives its object syntax from Smalltalk. All of the syntax for non-object-oriented operations (including primitive variables, pre-processing, expressions, function declarations, and function calls) is identical to that of C, while the syntax for object-oriented features is an implementation of Smalltalk-style messaging.

You can find more information about the language and its history here.

Join the Objective-C track

Exercism is a great website

What I like about it is that I am able to solve the challenges in a TDD way working in a environment that I am familiar (my own PC not a browser IDE) and the cherry on the top of the cake is that I have access to code reviews.

Relaxed. Encouraging. Supportive.

Meet the Objective-C Track mentors

Once you join the Objective-C language track, you will receive support and feedback from our team of mentors. Here are the bios of a few of the mentors of this track.

Avatar of Andrea Sessa

Andrea Sessa https://github.com/Sessa93

I use Objective-C everyday. Sometimes it is weird, but I have learnt to love it.
Avatar of Seyed Mojtaba Hosseini Zeidabadi

Seyed Mojtaba Hosseini Zeidabadi https://github.com/MojtabaHs

Senior Developer Technical Lead ♛ iOS Programming Instructor ♛ UI/UX Designer ✔ More: https://www.linkedin.com/in/mojtabahosseini/
Avatar of Farhan Ahmed

Farhan Ahmed https://github.com/insha

I have been using Objective-C for almost 15 years. It still is a good language and until about 2014 it was the sole point of entry to officially develop for Apple's platforms. My overall software design experience extends to a little over 2 decades in multiple industries including health care, fintech, and logistics.
Avatar of Clement Rousselle

Clement Rousselle https://github.com/crousselle

I've been coding in Objective-C ever since the first release of the iOS SDK, back in the old manual memory management days! It's been a fun ride and I'm excited to share and help people to write great apps!
Fun. Challenging. Interesting

Community-sourced Objective-C exercises

These are a few of the 51 exercises on the Objective-C track. You can see all the exercises here.

Collatz Conjecture
easy
integers
math
Robot Name
easy
randomness
strings
Difference Of Squares
easy
integers
math
Word Count
medium
maps
strings
transforming
Transpose
medium
strings
transforming
Largest Series Product
medium
integers
strings
transforming
math

Get started with the Objective-C track. As with everything on Exercism, it's 100% free!

Join the Objective-C Track