How to store one symbol in NSMutableDictionary?

How to store one symbol in NSMutableDictionary?

References

Reference NO 1

http://stackoverflow.com/questions/13587885/how-to-store-one-symbol-in-nsmutabledictionary

Reference NO 2

http://stackoverflow.com/questions/12191885/how-to-store-custom-objects-in-nsmutabledictionary

Reference NO 3

http://developer.apple.com/library/ios/documentation/cocoa/conceptual/ProgrammingWithObjectiveC/FoundationTypesandCollections/FoundationTypesandCollections.html

Reference NO 4

http://www.globalnerdy.com/2012/09/23/objective-c-nsnumber-nsarray-nsdictionary-less-yak-shaving/

Reference NO 5

http://blog.bignerdranch.com/398-objective-c-literals-part-1/

Reference NO 6

http://clang.llvm.org/docs/ObjectiveCLiterals.html

Reference NO 7

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Reference NO 8

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