Every object has a reference count. When it goes to 0, the object is deallocated. Assuming the property was declared as property retain: Your first example, line by line: The object is created by alloc, it has a reference count of 1.
The object is handed over to self's setAController: The calling code no longer needs the object itself, so it calls release, decrementing the reference count to 1.
Your second example basically does steps 1 and 2 but not 3, so at the end the object's reference count is 2. The rule is that if you create an object, you are responsible for releasing it when you're done with it. In your example, the code is done with tempAController after it sets the property.
It is the setter method's responsibility to call retain if it needs that object to stick around. It's important to remember that self. If the property was declared property copythen the object would have been copied instead of retained.
In the first example, the original object would be released right away; in the second example, the original object's reference count would be 1 even though it should be 0.
So you would still want to write your code the same way. If the property was declared property assignthen self isn't claiming ownership of the object, and somebody else needs to retain it.
In this case, the first example would be incorrect. These sorts of properties are rare, usually only used for object delegates.The evolution of Business policy to strategic management summaried below: 8 Environmental Change (Industrial Development Second Generation First Generation Strategic Management ’s (Still evolving) Strategic Planning ’s Planning Business Policy ’s Exbibit 3: Evolution of Business Policy and Stategic Management Strategic.
The calling code no longer needs the object itself, so it calls release, decrementing the reference count to 1. Your second example basically does steps 1 and 2 but not 3, .
Write Allocate - the block is loaded on a write miss, followed by the write-hit action.
No Write Allocate - the block is modified in the main memory and not loaded into the cache. Although either write-miss policy could be used with write through or write back, write-back caches generally use write allocate (hoping that subsequent writes to.
“On what basis shall we allocate resources to program A instead of program B,” is the perennial statement in public sector budgeting. Identify and discuss at least five attempts, found in the MPA Comprehensive Exam Question Examples.
Budget development and execution, a significant government-wide process managed from the Executive Office of the President and a mechanism by which the President implements decisions, policies, priorities, and actions in all areas (e.g. economic recovery, health care, energy policy, national security).