Objective-C cheat sheet [closed]

Question

What cheat sheets exist for Objective-C?

I have googled but I really don't know what to look for. Most of them assume I know Objective-C and I don't. I really want a guide aimed at an experienced programmer.

Answer 1

The Apple developer site has Introduction to The Objective-C 2.0 Programming Language (dead link)

A 10-Minute Introduction to Objective-C

The Ultimate iPhone Objective-C Cheat Sheet

Objective-C Cheat Sheet (dead link)

Objective-C Cheat Sheet (pdf) (dead link)

Answer 2

Here is another cheat sheet which compares C, C++, Objective-C and C#. Useful if you're coming from one of the other "C-like" languages.

Platform Languages: C, C++, Objective C, Java, C# a side-by-side reference sheet