Under automatic reference counting, why are retain, release, and dealloc not allowed?

Question

When trying to use -retain, -release, and -dealloc while building my application using automatic reference counting in Xcode 4.2, I ge

Answer 1

in response to AliSoftware: we CNA mix ARTC and not-ARC frameworks, and also arc and not-ARC source.

(I did it..)

The basic ideas are: 1) compiler will insert/remove calls as a very-very-good cocoa programmer can do 2) cocoa is ANYWAY C code, so we have separate compilations, so the linker CAN link binaries produced by multiple sources. Think it as we can mix asm and cocoa, or C and pascal...

in main opinion the Appleadvantege over c# / java is here: we are alway allows to mix, and, using a COMPILER technique 8non a runtime..) we can rush performance beyond.