SVN & Xcode
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When you’re coding a huge project in Xcode, and you’ve written all of this awesome stuff, it’s almost done, and the big release is coming soon, that’s when the worst happens: The hard drive that had all of your code on it dies suddenly You didn’t have a backup in TimeMachine Files become corrupted You remove some important code, or overwrite it, accidentally – and save over your only copy; and you don’t know how you’ll ever manage to rewrite those thousands of lines of code over again All of the above
Most new developers, especially those with no serious intentions of becoming a professional programmer, generally think of version control software as being something that they don't need. Heck, I resisted using it for a long time even after programming became my livelihood because on most of my projects, I was the sole developer.
Do not forget the 'Not Quite Done Yet' step ;-) by Jan 11