[Boost-users] boost::multi_index_container different search key type

From: bert hubert (bert.hubert_at_[hidden])
Date: 2006-05-03 14:15:50

Joaquin, list,

In one of the last issues of the C/C++ User's Journal, Andrei Alexandrescu
described the need for something better than std::map when using expensive
keys:

 Let's start with two examples. The simplest one would involve the
 often-used map<string, something>: user names and user IDs, stock tickers
 and stock prices, class names and pointers to functions, words in Proust's
 opera and their counts...You can easily access the "something" if you have
 a key in the desired format. The problem is, you might have the key in a
 different format that forces a conversion. What if, for example, in your
 high-speed, high-availability, power-hungry, bonus-bringing stock market
 program, you have securities data come down the wire in raw char* format,
 but you need to look it up in a map<string, double>?

More on http://www.ddj.com/dept/cpp/184402065 - might this be something
boost::multi_index_container could be made to do?

Not that boost::multi_index_container isn't wonderful enough already!

Thanks.

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