searching a map

[jc35]

Cna someone please help...I am trying to search a map by a give string "userName" but the map has an int key value

Status::Code ChatRoomManager::NewChatRoom(ChatRoomInfo* chatRoom_info)
map<int, ClientInfo*> clients;

[Philip Nicoletti]

What is the connection between the map and username ?

[jc35]

Sorry username is a bit misguiding. I am trying to search for the chatrooms contained in the map by their name " chat_name"

[Philip Nicoletti]

You have no choice but to just iterate thru the map and check
the chat_name.

Why do you have an int as the key, if you want to search using
chatname ?

[jc35]

I have to write 2 separate functions, one to search by room ID and one to search by name. What would be the effect of using 2 maps one with string key and the other with an int key?

[laserlight]

I have to write 2 separate functions, one to search by room ID and one to search by name. What would be the effect of using 2 maps one with string key and the other with an int key?

That can work, but you have to be careful to keep them in sync. Alternatively, you may be able to use Boost.Bimap.

[Lindley]

Another option would be to define a map<string,int> which maps from the name to the integer you need to look up into the other map. The downside is two lookups are required when starting from a name, but in some cases it might be easier to keep things managable than throwing a pointer into two different maps.