how to get key from respective value in a NSDictionary?
I am aware of allKeys function but do we have a method which returns a single key for a single value.
how to get key from respective value in a NSDictionary? I am aware of
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how to get key from respective value in a NSDictionary?
I am aware of allKeys function but do we have a method which returns a single key for a single value.
Well because a value can be in a NSDictionary multiple times, there is no way to just say “Give me the key for this value”. But you CAN say “Give me all keys containing this value”.
NSArray* arrayOfKeys = [yourDictionary allKeysForObject:myObject];If the value is only once in the dictionary, you can just extract it, using:
YourObject* o = [arrayOfKeys firstObject];But, always do a NIL and count check on this array. Out of bounds exceptions ahead!
P.S. Credits to @Hagile for
firstObjectmethod instead ofobjectAtIndex:0