iOS 5 Best Practice (Release/retain?)

Question

As a beginning iPhone programmer, what is the best practice for writing apps to be used either with iOS 5 or older versions? Specifically, should I continue using the release/retain of data, or should I ignore that? Does it matter?

Answer 1

For anyone still curious about how to turn off ARC on individual files, here's what I did:

1. Go to your project settings, under Build Phases > Compile Sources
2. Select the files you want ARC disabled and add -fno-objc-arc compiler flags. You can set flags for multiple files in one shot by selecting the files then hitting "Enter" key.

I don't know if this is the recommended way, but it works for me.

PS: I gathered this information from clang.llvm.org here which is publicly accessible, thus not under NDA.