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POWhat is better, a STL list or a STL Map for 20 entries, considering order of insertion is as important as the search speed
 

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  1. POWhat is better, a STL list or a STL Map for 20 entries, considering order of insertion is as important as the search speed
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    <p>I have the following scenario.The implementation is required for a real time application.</p> <p>1)I need to store at max 20 entries in a container(STL Map, STL List etc). 2)If a new entry comes and 20 entries are already present i have to overwrite the oldest entry with the new entry.</p> <p>Considering point 2, i feel if the container is full (Max 20 entries) 'list' is the best bet as i can always remove the first entry in the list and add the new one at last (push_back). However, search won't be as efficient.</p> <p>For only 20 entries, does it really make a big difference in terms of searching efficiency if i use a list in place of a map?</p> <p>Also considering the cost of insertion in map i feel i should go for a list?</p> <p>Could you please tell what is a better bet for me ?</p>
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