Reference Code Standard
Follow Google’s Objective-C Style Guide , it will first direct you to read Apple’s Coding Guidelines and then Google’s C++ Style Guide , don’t skip these as they complement the Style Guide in a great way.
Exceptions to the Standard
When sharing code with C++ that uses Google’s style, use 80 character limit per line, otherwise use 100; limiting characters per line helps with code reviews.
Implementing the Standard
Be consistent with the codebase and if source code doesn’t follow a particular style start introducing the style incrementally.
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