This is not meant to be a beginner's guide or a detailed discussion about Objective-C; it is meant to be a quick reference to common, high level topics.
- Read my Swift cheatsheet as well (Swift will replace Objective-C for iOS apps).
- Support this project via Gratipay
- To download a PDF version of this, use GitPrint.com
Note: I wrote this over a stretch of 3 days, so it could probably use some editing and clarifications where necessary. Please feel free to edit this document to update or improve upon it, making sure to keep with the general formatting of the document. The list of contributors can be found here.