is it possible to combine non-ARC and ARC project code?

Question

Is it possible to combine ARC and non-ARC projects? I haven\'t really tried it yet but this is the scenario:

We have an old iOS project (non-ARC) with a tab controll

Answer 1

Yes of course and it is very easy. Start your new project with arc and just "tag" the old imported .m files with the not arc thingy. Follow this tutorial to see how:

http://www.raywenderlich.com/5677/beginning-arc-in-ios-5-part-1

(explains about how to convert but also about how to maintain in a non arc fashion)

Edit: The non arc tag is -fno-objc-arc you should set the files that you want xcode to consider non arc like this:

(taken from Ray Wenderlich tutorial page)