Xcode 4 & Xcode 3.2.6

Can you have Xcode 4 and Xcode 3.2.6 on the same Lion Mac at the same time? Or can you only have one insta开发者_如何学JAVAnce of Xcode installed.

Yes. During the Xcode install process, you can select the folder where it is installed. Install one in (e.g.) /Developer and the other in /Developer4. I did that and it works fine.