What is the difference between a Map and a Dictionary?

Posted by devoured elysium on Stack Overflow See other posts from Stack Overflow or by devoured elysium
Published on 2010-05-21T17:12:30Z Indexed on 2010/05/21 17:20 UTC
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language-agnostic

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data-structures

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dictionary

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map

What is the difference between a Map and a Dictionary? I am not asking for how they are defined in language X or Y(which seems to be what generally people are asking here on SO), I want to know what is their difference in theory.

I know a Map is an object that maps keys to values. Isn't a Dictionary the same? Thanks

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