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fixed up copyrights, some small progress on new adaptor category choice semantics

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[SVN r20047]
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Dave Abrahams
2003-09-14 02:17:41 +00:00
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@ -3,9 +3,9 @@
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<title>The Boost Iterator Library Boost</title>
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@ -25,7 +25,7 @@ Railway Operation and Construction</a></td>
</tr>
<tr class="field"><th class="field-name">date:</th><td class="field-body">$Date$</td>
</tr>
<tr class="field"><th class="field-name">copyright:</th><td class="field-body">Copyright Dave Abrahams, Jeremy Siek, Thomas Witt 2003. All rights reserved</td>
<tr class="field"><th class="field-name">copyright:</th><td class="field-body">Copyright David Abrahams, Jeremy Siek, Thomas Witt 2003. All rights reserved</td>
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@ -34,7 +34,7 @@ Railway Operation and Construction</a></td>
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Abstract:</th><td class="field-body">The Boost Iterator Library contains two parts. The first
is a system of <a class="reference" href="../../more/generic_programming.html">concepts</a> which extend the C++ standard
is a system of <a class="reference" href="../../../more/generic_programming.html#concept">concepts</a> which extend the C++ standard
iterator requirements. The second is a framework
of components for building iterators based on these
extended concepts and includes several useful iterator
@ -70,16 +70,17 @@ replace the older Boost Iterator Adaptor Library.</td>
<p>The iterator categories defined in C++98 are extremely limiting
because they bind together two orthogonal concepts: traversal and
element access. For example, because a random access iterator is
required to return a reference (and not a proxy) when dereferenced, it
is impossible to capture the capabilities of
<tt class="literal"><span class="pre">vector&lt;bool&gt;::iterator</span></tt> using the C++98 categories. The infamous
&quot;<tt class="literal"><span class="pre">vector&lt;bool&gt;</span></tt> is not a container, and its iterators aren't random
access iterators&quot;, debacle about which Herb Sutter wrote two papers
for the standards comittee (<a class="reference" href="http://www.gotw.ca/publications/N1185.pdf">n1185</a> and <a class="reference" href="http://www.gotw.ca/publications/N1211.pdf">n1211</a>), and a <a class="reference" href="http://www.gotw.ca/gotw/050.htm">Guru of the
Week</a>. New-style iterators go well beyond patching up
<tt class="literal"><span class="pre">vector&lt;bool&gt;</span></tt>, though. There are lots of other iterators already
in use which can't be adequately represented by the existing concepts.
For details about the new iterator concepts, see our</p>
required to return a reference (and not a proxy) when dereferenced,
it is impossible to capture the capabilities of
<tt class="literal"><span class="pre">vector&lt;bool&gt;::iterator</span></tt> using the C++98 categories. This is the
infamous &quot;<tt class="literal"><span class="pre">vector&lt;bool&gt;</span></tt> is not a container, and its iterators
aren't random access iterators&quot;, debacle about which Herb Sutter
wrote two papers for the standards comittee (<a class="reference" href="http://www.gotw.ca/publications/N1185.pdf">n1185</a> and <a class="reference" href="http://www.gotw.ca/publications/N1211.pdf">n1211</a>),
and a <a class="reference" href="http://www.gotw.ca/gotw/050.htm">Guru of the Week</a>. New-style iterators go well beyond
patching up <tt class="literal"><span class="pre">vector&lt;bool&gt;</span></tt>, though: there are lots of other
iterators already in use which can't be adequately represented by
the existing concepts. For details about the new iterator
concepts, see our</p>
<blockquote>
<a class="reference" href="new-iter-concepts.html">Standard Proposal For New-Style Iterators</a></blockquote>
</div>
@ -177,5 +178,11 @@ LocalWords: incrementable xxx min prev inplace png oldeqnew AccessTag struct
LocalWords: TraversalTag typename lvalues DWA Hmm JGS -->
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