std::map but with multiple values for one key?

[Cyrilix]

I'm wondering if there is a way to use the STL map class in such a way that you pass in, say, 4 parameters, the first being a key, and the other 3 being values of any type. What I mainly want is an associative container that is not limited to key/value pair. Thanks.

[CPallini]

This is easy achieved using an object (e.g. a vector) as the template type of the map. :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.

[Cyrilix]

Hmm... now why didn't I think about that... I like it. :) Thanks.

[Michael Sadlon]

There is multi_map and multi_hash_map.

[Cyrilix]

AFAIK, a multi-map is a map, but the keys do not have to be unique. I haven't checked the hash map though.

[Michael Sadlon]

Multiple-key map Maps are a kind of associative containers that stores elements formed by the combination of a key value and a mapped value, much like map containers, but allowing different elements to have the same key value. From: http://www.cplusplus.com/reference/stl/multimap/[^] It should let you store multiple values per key, which is what you said you wanted. I've never used it myself, but it doesn't look much harder than a normal map. multi_hash_map is just the hash_map version of it :) It exists in the stdex namespace in the VC++ compiler only. Hope it helps!