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24 | </div> | |
25 | <div class="section boost_bimap_bimap_and_boost"> | |
26 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | |
27 | <a name="boost_bimap.bimap_and_boost"></a><a class="link" href="bimap_and_boost.html" title="Bimap and Boost">Bimap and Boost</a> | |
28 | </h2></div></div></div> | |
29 | <div class="toc"><dl> | |
30 | <dt><span class="section"><a href="bimap_and_boost.html#boost_bimap.bimap_and_boost.bimap_and_multiindex">Bimap | |
31 | and MultiIndex</a></span></dt> | |
32 | <dt><span class="section"><a href="bimap_and_boost/boost_libraries_that_work_well_with_boost_bimap.html">Boost | |
33 | Libraries that work well with Boost.Bimap</a></span></dt> | |
34 | <dd><dl> | |
35 | <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> | |
36 | <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> | |
37 | <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> | |
38 | <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> | |
39 | <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> | |
40 | <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> | |
41 | <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> | |
42 | <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> | |
43 | <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> | |
44 | <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> | |
45 | </dl></dd> | |
46 | <dt><span class="section"><a href="bimap_and_boost/dependencies.html">Dependencies</a></span></dt> | |
47 | </dl></div> | |
48 | <div class="section boost_bimap_bimap_and_boost_bimap_and_multiindex"> | |
49 | <div class="titlepage"><div><div><h3 class="title"> | |
50 | <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 | |
51 | and MultiIndex</a> | |
52 | </h3></div></div></div> | |
53 | <p> | |
54 | <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 | |
55 | <span class="bold"><strong>C</strong></span>ontainers | |
56 | </p> | |
57 | <div class="blockquote"><blockquote class="blockquote"><p> | |
58 | <span class="emphasis"><em> Let's be generic, construct frameworks, describe the world in | |
59 | an unified way... </em></span> | |
60 | </p></blockquote></div> | |
61 | <div class="blockquote"><blockquote class="blockquote"><p> | |
62 | <span class="emphasis"><em> No!, it is better to be specialized, design easy-to-use components, | |
63 | offer plug-and-play objects... </em></span> | |
64 | </p></blockquote></div> | |
65 | <div class="blockquote"><blockquote class="blockquote"><p> | |
66 | <span class="bold"><strong> Why not take advantage of the best of both worlds? | |
67 | </strong></span> | |
68 | </p></blockquote></div> | |
69 | <p> | |
70 | <span class="inlinemediaobject"><img src="../images/bimap/miBimapFramework.png" alt="miBimapFramework"></span> | |
71 | </p> | |
72 | <p> | |
73 | With Boost.Bimap, you can build associative containers in which both types | |
74 | can be used as key. There is a library in Boost that already allows the creation | |
75 | of this kind of container: Boost.MultiIndex. It offers great flexibility | |
76 | and lets you construct almost any container that you could dream of. The | |
77 | framework is very clean. You might want to read this library's tutorial to | |
78 | learn about the power that has been achieved. | |
79 | </p> | |
80 | <p> | |
81 | But generality comes at a price: the interface that results might not be | |
82 | the best for every specialization. People may end up wrapping a B.MI container | |
83 | in its own class every time they want to use it as a bidirectional map. Boost.Bimap | |
84 | takes advantage of the narrower scope to produce a better interface for bidirectional | |
85 | maps <a href="#ftn.boost_bimap.bimap_and_boost.bimap_and_multiindex.f0" class="footnote"><sup class="footnote"><a name="boost_bimap.bimap_and_boost.bimap_and_multiindex.f0"></a>[2]</sup></a>. There is no learning curve if you know how to use standard containers. | |
86 | Great effort was put into mapping the naming scheme of the STL to Boost.Bimap. | |
87 | The library is designed to match the common STL containers. | |
88 | </p> | |
89 | <p> | |
90 | Boost.MultiIndex is, in fact, the core of the bimap container. | |
91 | </p> | |
92 | <p> | |
93 | However, Boost.Bimap do not aim to tackle every problem with two indexed | |
94 | types. There exist some problems that are better modelled with Boost.MultiIndex. | |
95 | </p> | |
96 | <div class="sidebar"> | |
97 | <div class="titlepage"></div> | |
98 | <p> | |
99 | <span class="bold"><strong>Problem I - An employee register</strong></span> | |
100 | </p> | |
101 | <p> | |
102 | <span class="emphasis"><em>Store an ID and a name for an employee, with fast search on each | |
103 | member.</em></span> | |
104 | </p> | |
105 | <p> | |
106 | 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 | |
107 | that other data will need to be indexed later. | |
108 | </p> | |
109 | </div> | |
110 | <div class="sidebar"> | |
111 | <div class="titlepage"></div> | |
112 | <p> | |
113 | <span class="bold"><strong>Problem II - A partners container</strong></span> | |
114 | </p> | |
115 | <p> | |
116 | <span class="emphasis"><em>Store the names of couples and be able to get the name of a person's | |
117 | partner.</em></span> | |
118 | </p> | |
119 | <p> | |
120 | This problem is better modelled as a collection of relations, and <span class="bold"><strong>Boost.Bimap</strong></span> fits nicely here. | |
121 | </p> | |
122 | </div> | |
123 | <p> | |
124 | You can also read <a class="link" href="the_tutorial/additional_information.html" title="Additional information">Additional | |
125 | Information</a> for more information about the relation of this two libraries. | |
126 | </p> | |
127 | </div> | |
128 | <div class="footnotes"> | |
129 | <br><hr style="width:100; align:left;"> | |
130 | <div id="ftn.boost_bimap.bimap_and_boost.bimap_and_multiindex.f0" class="footnote"><p><a href="#boost_bimap.bimap_and_boost.bimap_and_multiindex.f0" class="para"><sup class="para">[2] </sup></a> | |
131 | In the same fashion, Boost.MRU will allow the creation of <span class="emphasis"><em>most | |
132 | recent updated</em></span> aware containers, hiding the complexity of Boost.MultiIndex. | |
133 | </p></div> | |
134 | </div> | |
135 | </div> | |
136 | <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> | |
137 | <td align="left"></td> | |
138 | <td align="right"><div class="copyright-footer">Copyright © 2006-2012 Matias Capeletto<p> | |
139 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
140 | 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>) | |
141 | </p> | |
142 | </div></td> | |
143 | </tr></table> | |
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