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1 | <?xml version="1.0" encoding="utf-8" ?> |
2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
3 | <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> | |
4 | <head> | |
5 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> | |
6 | <meta name="generator" content="Docutils 0.5: http://docutils.sourceforge.net/" /> | |
7 | <title>Readable Iterator Concept</title> | |
8 | <link rel="stylesheet" href="../../../rst.css" type="text/css" /> | |
9 | </head> | |
10 | <body> | |
11 | <div class="document" id="readable-iterator-concept"> | |
12 | <h1 class="title">Readable Iterator Concept</h1> | |
13 | ||
14 | <!-- Copyright David Abrahams 2006. Distributed under the Boost --> | |
15 | <!-- Software License, Version 1.0. (See accompanying --> | |
16 | <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> | |
17 | <p>A class or built-in type <tt class="docutils literal"><span class="pre">X</span></tt> models the <em>Readable Iterator</em> concept | |
18 | for value type <tt class="docutils literal"><span class="pre">T</span></tt> if, in addition to <tt class="docutils literal"><span class="pre">X</span></tt> being Assignable and | |
19 | Copy Constructible, the following expressions are valid and respect | |
20 | the stated semantics. <tt class="docutils literal"><span class="pre">U</span></tt> is the type of any specified member of | |
21 | type <tt class="docutils literal"><span class="pre">T</span></tt>.</p> | |
22 | <table border="1" class="docutils"> | |
23 | <colgroup> | |
24 | <col width="28%" /> | |
25 | <col width="20%" /> | |
26 | <col width="52%" /> | |
27 | </colgroup> | |
28 | <thead valign="bottom"> | |
29 | <tr><th class="head" colspan="3">Readable Iterator Requirements (in addition to Assignable and Copy Constructible)</th> | |
30 | </tr> | |
31 | <tr><th class="head">Expression</th> | |
32 | <th class="head">Return Type</th> | |
33 | <th class="head">Note/Precondition</th> | |
34 | </tr> | |
35 | </thead> | |
36 | <tbody valign="top"> | |
37 | <tr><td><tt class="docutils literal"><span class="pre">iterator_traits<X>::value_type</span></tt></td> | |
38 | <td><tt class="docutils literal"><span class="pre">T</span></tt></td> | |
39 | <td>Any non-reference, | |
40 | non-cv-qualified type</td> | |
41 | </tr> | |
42 | <tr><td><tt class="docutils literal"><span class="pre">*a</span></tt></td> | |
43 | <td>Convertible to <tt class="docutils literal"><span class="pre">T</span></tt></td> | |
44 | <td><dl class="first last docutils"> | |
45 | <dt>pre: <tt class="docutils literal"><span class="pre">a</span></tt> is dereferenceable. If <tt class="docutils literal"><span class="pre">a</span> <span class="pre">==</span> <span class="pre">b</span></tt> then <tt class="docutils literal"><span class="pre">*a</span></tt></dt> | |
46 | <dd>is equivalent to <tt class="docutils literal"><span class="pre">*b</span></tt>.</dd> | |
47 | </dl> | |
48 | </td> | |
49 | </tr> | |
50 | <tr><td><tt class="docutils literal"><span class="pre">a->m</span></tt></td> | |
51 | <td><tt class="docutils literal"><span class="pre">U&</span></tt></td> | |
52 | <td>pre: <tt class="docutils literal"><span class="pre">pre:</span> <span class="pre">(*a).m</span></tt> is well-defined. Equivalent to <tt class="docutils literal"><span class="pre">(*a).m</span></tt>.</td> | |
53 | </tr> | |
54 | </tbody> | |
55 | </table> | |
56 | </div> | |
57 | <div class="footer"> | |
58 | <hr class="footer" /> | |
59 | <a class="reference external" href="ReadableIterator.rst">View document source</a>. | |
60 | Generated by <a class="reference external" href="http://docutils.sourceforge.net/">Docutils</a> from <a class="reference external" href="http://docutils.sourceforge.net/rst.html">reStructuredText</a> source. | |
61 | ||
62 | </div> | |
63 | </body> | |
64 | </html> |