<?xml version="1.0" encoding="utf-8" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <!-- Copyright Aleksey Gurtovoy 2006. Distributed under the Boost --> <!-- Software License, Version 1.0. (See accompanying --> <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="generator" content="Docutils 0.3.6: http://docutils.sourceforge.net/" /> <title>THE BOOST MPL LIBRARY: Iterator Protocol</title> <link rel="stylesheet" href="../style.css" type="text/css" /> </head> <body class="docframe"> <table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./apply-lambda-semantics.html" class="navigation-link">Prev</a> <a href="./tag-dispatching-protocol.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./apply-lambda-semantics.html" class="navigation-link">Back</a> <a href="./tag-dispatching-protocol.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./changes-in-boost-1-32-0.html" class="navigation-link">Up</a> <a href="../index.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./tutorial_toc.html" class="navigation-link">Full TOC</a></span></td> <td class="header-group page-location"><a href="../index.html" class="navigation-link">Front Page</a> / <a href="./changelog-history.html" class="navigation-link">Changelog & History</a> / <a href="./changes-in-boost-1-32-0.html" class="navigation-link">Changes in Boost 1.32.0 Release</a> / <a href="./iterator-protocol.html" class="navigation-link">Iterator Protocol</a></td> </tr></table><div class="header-separator"></div> <div class="section" id="iterator-protocol"> <h1><a class="toc-backref" href="./changes-in-boost-1-32-0.html#id65" name="iterator-protocol">Iterator Protocol</a></h1> <p>The library no longer guarantees or relies on the direct presence of <tt class="literal"><span class="pre">advance</span></tt> / <tt class="literal"><span class="pre">distance</span></tt> / <tt class="literal"><span class="pre">next</span></tt> / <tt class="literal"><span class="pre">prior</span></tt> / <tt class="literal"><span class="pre">type</span></tt> members in iterator types; the following table summarises the new requirements:</p> <table border="1" class="table"> <colgroup> <col width="50%" /> <col width="50%" /> </colgroup> <thead valign="bottom"> <tr><th>Before</th> <th>Now</th> </tr> </thead> <tbody valign="top"> <tr><td><tt class="literal"><span class="pre">i::type</span></tt></td> <td><tt class="literal"><span class="pre">deref<i>::type</span></tt></td> </tr> <tr><td><tt class="literal"><span class="pre">i::next</span></tt></td> <td><tt class="literal"><span class="pre">next<i>::type</span></tt></td> </tr> <tr><td><tt class="literal"><span class="pre">i::prior</span></tt></td> <td><tt class="literal"><span class="pre">prior<i>::type</span></tt></td> </tr> <tr><td><tt class="literal"><span class="pre">i::advance<n>::type</span></tt></td> <td><tt class="literal"><span class="pre">advance<i,n>::type</span></tt></td> </tr> <tr><td><tt class="literal"><span class="pre">i::distance<j>::type</span></tt></td> <td><tt class="literal"><span class="pre">distance<i,j>::type</span></tt></td> </tr> <tr><td><tt class="literal"><span class="pre">i::category</span></tt></td> <td><tt class="literal"><span class="pre">i::category</span></tt></td> </tr> </tbody> </table> </div> <div class="footer-separator"></div> <table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./apply-lambda-semantics.html" class="navigation-link">Prev</a> <a href="./tag-dispatching-protocol.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./apply-lambda-semantics.html" class="navigation-link">Back</a> <a href="./tag-dispatching-protocol.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./changes-in-boost-1-32-0.html" class="navigation-link">Up</a> <a href="../index.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./tutorial_toc.html" class="navigation-link">Full TOC</a></span></td> </tr></table></body> </html>