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Re:Xcode 4 - review by thought_alarm on Wednesday March 09, 2011 @08:28PM (#2307524)
You should keep XCode 3 around, regardless. Both versions can co-exist, so install XCode 4 into, say, /Developer4 instead of /Developer.

And when you open your project in XCode 4 it won't trash your XCode 3 project settings or prevent you from going back to XCode 3. However, any project settings you change in XCode 4 won't be visible in XCode 3.

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