STL multimaps | GameDev.net

AikonIV · 2003-03-23T07:14:39+00:00

I''ve been searching around with google and have found very little info on multimaps. I understand the map concept well enough, and how multimaps allow duplicate keys, but I haven''t found anything on how to access data in multimaps. What I need to know is how to access the data in each of the keys matching whatever key I''m currently operating on.

Your first port of call should be to the SGI STL documentation,and in particular their multimap page. That should tell you all that you need to know, if you read long enough. Basically you would use the equal_range function to get a pair of iterators to the relevant values, and iterate through them. A multimap element is a pair, where the .first element of that pair is the key and the .second element is the value. So your code will probably do something with ''myIterator->second'' while stepping myIterator through the range returned by equal_range.

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