Re: Hash map to categorize users.
On 2007-09-12 19:12, DaveJ wrote:
I have a small problem I'm trying to solve in C++
I have a file containing a number of usernames under a serious of
Note that we can't have duplicate users names.
I have written some code that parses the file, and can read each
group, and then read all the users in that group.
I want to be able to perform a lookup on a username, and find out what
group that user belongs to. Im guessing I need to use some sort of
hash map, but haven't found anything suitable. The emphisis is on
fast reterival, does anyone have a suggestion of how this could be
Since I don't have access to a good TR1 implementation I'm going to use
a normal map in the examples below, but it should be easily replaceable
with a hashmap if you have one.
The simplest implementation is to simply use
std::map<std::string, std::string> userToGroup;
If that is not enough please explain in more detail your needs.
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