This Code trows an EXC_BAD_ACCESS: NSError* error; if(![appdelegate.managedObjectContext countForFetchRequest:requ开发者_如何学Pythonest error:&error]) {
I want to inform user when HTTP error 404 etc is received. How can I detect that? I\'ve already tried to implement
NSError requires a domain, which I understand segments the range of error codes. One would anticipate that there exist somewhere a registry of domain.error code but I\'ve not been able to discover on
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