A common explanation for exc_bad_access faults that aren't detectable by the compiler is seeking to access unveiled objects. In this sort of cases, enabling NSZombies in Xcode might be an effective debugging strategy. Enabling NSZombies keeps objects that will Generally be produced alive as “zombies”.

NSZombies before submitting the application towards the Application Retail store. When NSZombies is enabled, no objects are released and you may be leaking memory regularly until your application ultimately is killed as a result of memory warnings.

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The respondsToSelector: technique returns a Boolean worth that signifies if the receiver implements or inherits a method that can respond to a specified information.

If you have to utilize a shadow to some check out, quite a few inexperienced developers will import the QuartzCore framework and apply a shadow towards the layer residence from the see; e.g.:

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