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Editorial Team
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Asked: 2026-05-24T23:56:09+00:00

Normally I do something like this (below) to get value I need: NSDictionary *state

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Normally I do something like this (below) to get value I need:

NSDictionary *state = [notification.userInfo objectForKey:@"state"];
[self.tabBarItem setBadgeValue:[state objectForKey:@"short"]];

But does it worth to do retain/release for values taken from NSDictionary? Something like this:

NSDictionary *state = [[notification.userInfo objectForKey:@"state"] retain];
[self.tabBarItem setBadgeValue:[state objectForKey:@"short"]];
[state release];

Is it more memory friendly? Or I shouldn’t bother and just trust to autorelease pool to do its job?

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1 Answer

  1. Editorial Team

    No, there’s no point in doing that. The result of [notification.userInfo objectForKey:@"state"] is always an autoreleased object; if you add an extra retain and release, that won’t change anything.

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