what cost controlling autorelease cocoa?


most apples support seems prevaricate controlling autoreleased objects generally formulating gui views, nonetheless i wish know cost controlling autoreleased objects is?



uiscrollview *timeline = [[uiscrollview alloc] initwithframe:cgrectmake(0, 20, 320, 34)];
[self addsubview:timeline];
[timeline release];


ultimately should i plan where all autoreleased controlling retain/release should difference order specific cases? should i generally controlling retain/release autorelease being difference returned objects preference methods [nsstring stringwithetc...] ?



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