Question

Hashtable equivalent in MFC C++

Asked by: mdw233

Hi All,

I am looking for a fast data structure in c++.  I am currently storing data in a vector<CString> however any time I need to find a value I must traverse the entire vector until I find the specific value I am looking for.  In C# I am able to use a Hashtable to access the specific element I am looking for instantly, without traversing.  Does something like this exist in c++.  I have been playing around with stdext::hash_map<> but am not sure if it is my best option.  Not sure that it isn't either, but I am sort of a novice when it comes to c++ so I wanted to see if there was a better option.

As always, thanks in advance for any help!
-Matt

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Asked On
2009-02-18 at 13:34:55ID24155857
Topics

Windows MFC Programming

,

C / C++ / C# Editors and IDEs

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: LordOfPortsPosted on 2009-02-18 at 15:12:51ID: 23676207

CMap http://msdn.microsoft.com/en-us/library/s897094z(VS.80).aspx in MFC and hash_map http://msdn.microsoft.com/en-us/library/6x7w9f6z(VS.80).aspx are the most likely equivalents to the Hashtable in C#.

 

by: LordOfPortsPosted on 2009-02-18 at 15:14:01ID: 23676214

The following data structure from the boost library might also be of interest http://www.boost.org/doc/libs/1_36_0/doc/html/boost/unordered_map.html

 

by: jkrPosted on 2009-02-19 at 09:07:13ID: 23683653

I'd definitely prefer 'stdext::hash_map<>' over MFC's CMap if you explicity want a hash table.

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