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| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
| <a name="boost_bimap.bimap_and_boost"></a><a class="link" href="bimap_and_boost.html" title="Bimap and Boost">Bimap and Boost</a> |
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| <div class="toc"><dl> |
| <dt><span class="section"><a href="bimap_and_boost.html#boost_bimap.bimap_and_boost.bimap_and_multiindex">Bimap |
| and MultiIndex</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html">Boost |
| Libraries that work well with Boost.Bimap</a></span></dt> |
| <dd><dl> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.introduction">Introduction</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_serialization">Boost.Serialization</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_assign">Boost.Assign</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_hash">Boost.Hash</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_lambda">Boost.Lambda</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_range">Boost.Range</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_foreach">Boost.Foreach</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_typeof">Boost.Typeof</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_xpressive">Boost.Xpressive</a></span></dt> |
| <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html#boost_bimap.bimap_and_boost.boost_libraries_that_work_well_with_boost_bimap.boost_property_map">Boost.Property_map</a></span></dt> |
| </dl></dd> |
| <dt><span class="section"><a href="bimap_and_boost/dependencies.html">Dependencies</a></span></dt> |
| </dl></div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_bimap.bimap_and_boost.bimap_and_multiindex"></a><a class="link" href="bimap_and_boost.html#boost_bimap.bimap_and_boost.bimap_and_multiindex" title="Bimap and MultiIndex">Bimap |
| and MultiIndex</a> |
| </h3></div></div></div> |
| <p> |
| <span class="emphasis"><em>MISC</em></span> - <span class="bold"><strong>M</strong></span>ulti-<span class="bold"><strong>I</strong></span>ndex <span class="bold"><strong>S</strong></span>pecialized |
| <span class="bold"><strong>C</strong></span>ontainers |
| </p> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| <span class="emphasis"><em> Let's be generic, construct frameworks, describe the world in |
| an unified way... </em></span> |
| </p></blockquote></div> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| <span class="emphasis"><em> No!, it is better to be specialized, design easy-to-use components, |
| offer plug-and-play objects... </em></span> |
| </p></blockquote></div> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| <span class="bold"><strong> Why not take advantage of the best of both worlds? |
| </strong></span> |
| </p></blockquote></div> |
| <p> |
| <span class="inlinemediaobject"><img src="../images/bimap/miBimapFramework.png" alt="miBimapFramework"></span> |
| </p> |
| <p> |
| With Boost.Bimap, you can build associative containers in which both types |
| can be used as key. There is a library in Boost that already allows the creation |
| of this kind of container: Boost.MultiIndex. It offers great flexibility |
| and lets you construct almost any container that you could dream of. The |
| framework is very clean. You migh want to read this library's tutorial to |
| learn about the power that has been achieved. |
| </p> |
| <p> |
| But generality comes at a price: the interface that results might not be |
| the best for every specialization. People may end up wrapping a B.MI container |
| in its own class every time they want to use it as a bidirectional map. Boost.Bimap |
| takes advantage of the narrower scope to produce a better interface for bidirectional |
| maps <sup>[<a name="id789018" href="#ftn.id789018" class="footnote">2</a>]</sup>. There is no learning curve if you know how to use standard containers. |
| Great effort was put into mapping the naming scheme of the STL to Boost.Bimap. |
| The library is designed to match the common STL containers. |
| </p> |
| <p> |
| Boost.MultiIndex is, in fact, the core of the bimap container. |
| </p> |
| <p> |
| However, Boost.Bimap do not aim to tackle every problem with two indexed |
| types. There exist some problems that are better modelled with Boost.MultiIndex. |
| </p> |
| <div class="sidebar"> |
| <p class="title"><b></b></p> |
| <p> |
| <span class="bold"><strong>Problem I - An employee register</strong></span> |
| </p> |
| <p> |
| <span class="emphasis"><em>Store an ID and a name for an employee, with fast search on each |
| member.</em></span> |
| </p> |
| <p> |
| This type of problem is better modelled as a database table, and <span class="bold"><strong>Boost.MultiIndex</strong></span> is the preferred choice. It is possible |
| that other data will need to be indexed later. |
| </p> |
| </div> |
| <div class="sidebar"> |
| <p class="title"><b></b></p> |
| <p> |
| <span class="bold"><strong>Problem II - A partners container</strong></span> |
| </p> |
| <p> |
| <span class="emphasis"><em>Store the names of couples and be able to get the name of a person's |
| partner.</em></span> |
| </p> |
| <p> |
| This problem is better modelled as a collection of relations, and <span class="bold"><strong>Boost.Bimap</strong></span> fits nicely here. |
| </p> |
| </div> |
| <p> |
| You can also read <a class="link" href="the_tutorial/additional_information.html" title="Additional information">Additional |
| Information</a> for more information about the relation of this two libraries. |
| </p> |
| </div> |
| <div class="footnotes"> |
| <br><hr width="100" align="left"> |
| <div class="footnote"><p><sup>[<a name="ftn.id789018" href="#id789018" class="para">2</a>] </sup> |
| In the same fashion, Boost.MRU will allow the creation of <span class="emphasis"><em>most |
| recent updated</em></span> aware containers, hiding the complexity of Boost.MultiIndex. |
| </p></div> |
| </div> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2006 -2007 Matias Capeletto<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
| </p> |
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