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Subject: [boost] [Tokenmap] A (perfect) hash container library chcked-in to sandbox (RFC)
From: Slawomir Lisznianski (slisznia_at_[hidden])
Date: 2010-02-21 15:59:08

A tokenmap is a data structure that uniquely maps pseudo-random
generated keys with elements of the collection.

Boost.Tokenmap is a (perfect) hash container library for C++. An
important distinction between tokenmap and other dictionary-like
containers, such as std::map or Boost.Unordered, is that tokenmap
generates keys internally (referred to as "tokens") rather than
relying on user to provide them. Specifically, when a new element is
inserted into the tokenmap, an apparently random key is returned back
to the caller which uniquely maps to the stored element. The returned
key can later be used in a very efficient lookup.

Although the code and documentation are far from complete, the
implementation in the repo is functional and hopefully serves as a
basis for further work.


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