Objective C: Newbie question about allocation, retain and release [duplicate]

Answer 1

The reason is because you defined the property m_Object to retain so it would result in a memory leak because alloc/init call results in a retain of +1 then property will retain giving it at least a retain count of +2. If you would like to make it one line feel free to abuse the auto release pool.

self.m_Object= [[[SomeObject alloc] init] autorelease];