Objective-C : Null value in collection
Classification
OWASP Mobile Top 10 2016 M7-Poor Code QualityOverview
Collection element may not have a value of nil.
In Cocoa and Cocoa Touch a collections are used for storing and managing groups of objects. Their primary role is to store objects in the form of arrays, dictionaries, and sets. All collection classes cannot contain the value nil except NSPointerArray.
References
