Library of standard compiler warnings/errors

I am wondering whether开发者_运维问答 you know of a way to demystify a given compiler warnings/error Xcode throws at you.

As a new developer to Objective-C, i would find it to be of value to know why some warnings happen, see examples of a code that would cause an error and explain the solution.

Are you aware of any resources that offer more insight into this?

"some warnings happen, see examples of a code that would cause an error and explain the solution."

It's best for you to provide code samples.

Why?

From http://developer.apple.com/library/ios/#documentation/DeveloperTools/gcc-4.2.1/gcc/Standards.html#Standards

"There is no formal written standard for Objective-C or Objective-C++. The most authoritative manual is “Object-Oriented Programming and the Objective-C Language”, available at a number of web sites..."

This means that tt's best for you to provide a specific warning and the associated code.