A collection of helpers (categories) we've written for iOS and OS X, full with convenience methods to make them easier and more useful. [tags:cocoa,objective-c,ios,mac]
Searching the allKeys array will have linear performance degradation with the size of the dictionary since it has to check each item in the array sequentially - checking if [dictionary objectForKey:key] == nil has constant time performance regardless of array size and would be a much better implementation.
Searching the allKeys array will have linear performance degradation with the size of the dictionary since it has to check each item in the array sequentially - checking if [dictionary objectForKey:key] == nil has constant time performance regardless of array size and would be a much better implementation.