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 0.7: http://docutils.sourceforge.net/" /> 7<title>The MPL Reference Manual: Iteration Algorithms</title> 8<link rel="stylesheet" href="../style.css" type="text/css" /> 9</head> 10<body class="docframe refmanual"> 11<table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./inserter-class.html" class="navigation-link">Prev</a> <a href="./fold.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./inserters.html" class="navigation-link">Back</a> <a href="./querying-algorithms.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./algorithms.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> 12<td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./algorithms.html" class="navigation-link">Algorithms</a> / <a href="./iteration-algorithms.html" class="navigation-link">Iteration Algorithms</a></td> 13</tr></table><div class="header-separator"></div> 14<div class="section" id="iteration-algorithms"> 15<h1><a class="toc-backref" href="./algorithms.html#id1468">Iteration Algorithms</a></h1> 16<p id="label-algorithms-iteration-algorithms">Iteration algorithms are the basic building blocks behind many of the 17MPL's algorithms, and are usually the first place to look at when 18starting to build a new one. Abstracting away the details of sequence 19iteration and employing various optimizations such as recursion 20unrolling, they provide significant advantages over a hand-coded 21approach.</p> 22<!-- Of all of iteration algorithms, ``iter_fold_if`` is the 23most complex and at the same time the most fundamental. The rest of 24the algorithms from the category |- -| ``iter_fold``, ``reverse_iter_fold``, 25``fold``, and ``reverse_fold`` |- -| simply provide a more high-level 26(and more restricted) interface to the core ``iter_fold_if`` 27functionality [#performace]_. 28 29.. [#performace] That's not to say that they are *implemented* 30through ``iter_fold_if`` |- -| they are often not, in particular 31because the restricted functionality allows for more 32optimizations. --> 33<!-- Algorithms/Iteration Algorithms//fold --> 34<ul class="toc simple" id="outline"> 35<li><a class="reference internal" href="./fold.html" id="id1469">fold</a></li> 36<li><a class="reference internal" href="./iter-fold.html" id="id1470">iter_fold</a></li> 37<li><a class="reference internal" href="./reverse-fold.html" id="id1471">reverse_fold</a></li> 38<li><a class="reference internal" href="./reverse-iter-fold.html" id="id1472">reverse_iter_fold</a></li> 39<li><a class="reference internal" href="./accumulate.html" id="id1473">accumulate</a></li> 40</ul> 41</div> 42 43<div class="footer-separator"></div> 44<table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./inserter-class.html" class="navigation-link">Prev</a> <a href="./fold.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./inserters.html" class="navigation-link">Back</a> <a href="./querying-algorithms.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./algorithms.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> 45<td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div> 46Distributed under the Boost Software License, Version 1.0. (See accompanying 47file LICENSE_1_0.txt or copy at <a class="reference external" href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</div></td></tr></table></body> 48</html> 49