title: Objective-c - Class Keyword
body: <p><a href="https://github.com/cocos2d/cocos2d-iphone/blob/15ed2bc79b74bb13dcd8022d8336a54ede94140c/tests/ZwoptexTest.m" rel="nofollow">I didn't get the usage of "Class" in Objective-c file.</a> It looks like this developer is mixing c++ and Objective-c (I may be wrong). I learned that we can write C functions in Objective-c code but I am not sure about this Class concept.</p>
  
  <p>Since I am new to Objective-c so it would be great if someone please refer me some tutorial or book where I can learn.</p>