Objective-C

Join the Objective-C Track
TODO: The maintainers have not provided an introduction for this track.
Join the Objective-C Track
Track mentors

3 Mentors

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

643 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

A tremendous learning opportunity to explore the depth of your own knowledge

Exercism is fantastic in learning new languages but that is not the extent of it. If you are a "more experienced" programmer you may have encountered impostor syndrome: the idea you don't really know what you think you know. Exercism lets you solve problems and put them in the space of open feedback which is a tremendous learning opportunity to explore the depth of your own knowledge. Even if you have been programming in a language for awhile it is worth checking into Exercism to see where you stand with current implementation practices.

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 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 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 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.

Crypto Square
medium
looping
strings
transforming
Isogram
easy
filtering
strings
Strain
easy
filtering
sequences
ETL
easy
maps
transforming
All Your Base
medium
integers
transforming
math
Sieve
easy
filtering
math

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

Join the Objective-C Track