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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="range.history_ack"></a><a class="link" href="history_ack.html" title="History and Acknowledgement"> History and Acknowledgement</a>
</h2></div></div></div>
<a name="range.history_ack.version_1___before_boost_1_43"></a><h4>
<a name="id894720"></a>
<a class="link" href="history_ack.html#range.history_ack.version_1___before_boost_1_43">Version 1 -
before Boost 1.43</a>
</h4>
<p>
The library have been under way for a long time. Dietmar Kühl originally intended
to submit an <code class="computeroutput"><span class="identifier">array_traits</span></code> class
template which had most of the functionality present now, but only for arrays
and standard containers.
</p>
<p>
Meanwhile work on algorithms for containers in various contexts showed the
need for handling pairs of iterators, and string libraries needed special treatment
of character arrays. In the end it made sense to formalize the minimal requirements
of these similar concepts. And the results are the Range concepts found in
this library.
</p>
<p>
The term Range was adopted because of paragraph 24.1/7 from the C++ standard:
</p>
<p>
Most of the library's algorithmic templates that operate on data structures
have interfaces that use ranges. A range is a pair of iterators that designate
the beginning and end of the computation. A range [i, i) is an empty range;
in general, a range [i, j) refers to the elements in the data structure starting
with the one pointed to by i and up to but not including the one pointed to
by j. Range [i, j) is valid if and only if j is reachable from i. The result
of the application of functions in the library to invalid ranges is undefined.
</p>
<p>
Special thanks goes to
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
Pavol Droba for help with documentation and implementation
</li>
<li class="listitem">
Pavel Vozenilek for help with porting the library
</li>
<li class="listitem">
Jonathan Turkanis and John Torjo for help with documentation
</li>
<li class="listitem">
Hartmut Kaiser for being review manager
</li>
<li class="listitem">
Jonathan Turkanis for porting the lib (as far sa possible) to vc6 and vc7.
</li>
</ul></div>
<p>
The concept checks and their documentation was provided by Daniel Walker.
</p>
<a name="range.history_ack.version_2___boost_1_43_and_beyond"></a><h4>
<a name="id894829"></a>
<a class="link" href="history_ack.html#range.history_ack.version_2___boost_1_43_and_beyond">Version
2 - Boost 1.43 and beyond</a>
</h4>
<p>
This version introduced Range Adaptors and Range Algorithms. This version 2
is the result of a merge of all of the RangeEx features into Boost.Range.
</p>
<p>
There were an enormous number of very significant contributors through all
stages of this library.
</p>
<p>
Prior to Boost.RangeEx there had been a number of Range library implementations,
these include library implementations by Eric Niebler, Adobe, Shunsuke Sogame
etc. Eric Niebler contributed the Range Adaptor idea which is arguably the
single biggest innovation in this library. Inevitably a great deal of commonality
evolved in each of these libraries, but a considerable amount of effort was
expended to learn from all of the divergent techniques.
</p>
<p>
The people in the following list all made contributions in the form of reviews,
user feedback, design suggestions, or defect detection:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
Thorsten Ottosen: review management, design advice, documentation feedback
</li>
<li class="listitem">
Eric Niebler: early implementation, and review feedback
</li>
<li class="listitem">
Joel de Guzman: review
</li>
<li class="listitem">
Mathias Gaunard: review
</li>
<li class="listitem">
David Abrahams: implementation advice
</li>
<li class="listitem">
Robert Jones: defect reports, usage feedback
</li>
<li class="listitem">
Sean Parent: contributed experience from the Adobe range library
</li>
<li class="listitem">
Arno Schoedl: implementations, and review
</li>
<li class="listitem">
Rogier van Dalen: review
</li>
<li class="listitem">
Vincente Botet: review, documentation feedback
</li>
</ul></div>
<p>
Regardless of how I write this section it will never truly fairly capture the
gratitude that I feel to all who have contributed. Thank you everyone.
</p>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="right"><div class="copyright-footer">Copyright © 2003 -2010 Thorsten Ottosen, Neil Groves<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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