ios - Category + lazy instantiation patterns on Objective C -


I'm trying to use a lazy immediate on a range, but I'm stuck on it without any entry Here's some code for clear endless loop illustrations: 

  @implementation User (Extras) - (Cash Control *) Cache {CacheControl * _cache = (CacheControl *) [Self Value ForKey : @ "Cache"]; If (! _ Cache) {[Self setcatch: (Control of the cache *) [NSTTTDs inserting the object object name: @ "Cache control", managed object contaxes: self. Management object contexts]]; } Return _cache; } @end   
 Any idea how to solve this situation or should I not do it at all?   
 
 
  cache {{self will avasive value: @ "cache"]; CacheControl * cache = [auto-valuable valueForcowi: @ "cache"] [[KwayCaveValFor: @ "cache"]; == blue) {cache = [nsttdccature dinewebfofurenfenem: @ Managed object contact in "cache control": self Negative Object Contex] [Self Set-Primitive Value: For Hair: @ "Cash"];} Return Cache;}   
 Similar Examples "Core Data Programming Guide" and Sample Project Can be found in the  sectionIdentifier  method.

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