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Asked: 2026-05-25T15:43:50+00:00

I’m new to iPhone and i know about the primitive data structure in C

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I’m new to iPhone and i know about the primitive data structure in C like array and all but in objective c there is dictionary,i know that it is having a key value pair structure we can access values from equivalent keys and mutable dictionary is dynamic and all.I mean the basic structure i am aware about, but when we have to prefer dictionary?,what are the possible manipulation we can do in dictionary,how optimized it is?.
Any help appreciated in advance.

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  1. Editorial Team

    An NSDictionary is known more generally as an Associative Array.

    See the following Wikipedia article for a full explanation

    http://en.wikipedia.org/wiki/Associative_array

    You would use a dictionary rather than an array where you need to refer to an object by (for example) a name, rather than its position (index) in a list.

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