If you just want a wide sample, I suggest searching open source projects. For example, Google Code Search: http://www.google.com/codesearch?hl=en&lr=&q=.xcodep

If you just want a wide sample, I suggest searching open source projects. For example, Google Code Search: http://www.google.com/codesearch?hl=en&lr=&q=.xcodeproj&sbtn=Search http://www.google.com/codesearch?hl=en&lr=&q=.xcodep...