问题
Hi I am new to Xcode and wondering how do I perform an update from v4.5.1 to v4.6. Is it necessary to uninstall the current xcode on my Mac in order to upgrade my xcode?
回答1:
No need to uninstall the actual version of Xcode. Just open the Mac App Store and an update will appear on the "Updates" tab for Xcode. Have fun!
回答2:
Click the mac App Store icon. When you launch the app store, you should see software updates needed. Click on software updates and find xcode. Simply click on it to update it. No need to uninstall your current version.
来源：https://stackoverflow.com/questions/14823519/xcode-update-from-4-5-1-to-4-6