4.1 Memory Management

We encourage the use of the following macros to ease retain and release and as a convenience for managing code which should work in both a conventional retain counting environment and one with automatic reference counting (ARC)

• ASSIGN(object,value) to assign an object variable, performing the appropriate retain/release as necessary.

• ASSIGNCOPY(object,value) to copy the value and assign it to the object.

• DESTROY(object) to release an object variable and set it to nil.

• ENTER_POOL and LEAVE_POOL to bracket statements which should be performed inside their own auutorlease context.