nsdictionary - Implementing a mutable IndentityDictionary in Objective-C? -


trying out older code , i've come across identitydictionary. know nsdictionary uses equality, not identity compare objects. judging it's use seems need mutable identitydictionary anyway?

i've read 2 threads on , seems quite difficult do, class clusters, hash functions , on.

does nsdictionary's objectforkey: rely on identity or equality

implementing -hash / -isequal: / -isequalto

how 1 go doing this?


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