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<!-- Copyright Aleksey Gurtovoy 2006. Distributed under the Boost --> 5<!-- Software License, Version 1.0. (See accompanying --> 6<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> 7<head> 8<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 9<meta name="generator" content="Docutils 0.3.6: http://docutils.sourceforge.net/" /> 10<title>THE BOOST MPL LIBRARY: Tutorial: Metafunctions and Higher-Order Metaprogramming</title> 11<link rel="stylesheet" href="../style.css" type="text/css" /> 12</head> 13<body class="docframe"> 14<table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="../index.html" class="navigation-link">Prev</a> <a href="./dimensional-analysis.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group">Back <a href="./reference-manual.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="../index.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> 15<td class="header-group page-location"><a href="../index.html" class="navigation-link">Front Page</a> / <a href="./tutorial-metafunctions.html" class="navigation-link">Tutorial: Metafunctions and Higher-Order Metaprogramming</a></td> 16</tr></table><div class="header-separator"></div> 17<div class="section" id="tutorial-metafunctions"> 18<h1><a class="toc-backref" href="../index.html#id40" name="tutorial-metafunctions">Tutorial: Metafunctions and Higher-Order Metaprogramming</a></h1> 19<table class="field-list" frame="void" rules="none"> 20<col class="field-name" /> 21<col class="field-body" /> 22<tbody valign="top"> 23<tr class="field"><th class="field-name">Note:</th><td class="field-body">The following material is an excerpt from Chapter 3 of "<a class="reference" href="http://www.awprofessional.com/titles/0321227255" target="_top">C++ Template Metaprogramming</a>", 24by David Abrahams and Aleksey Gurtovoy, ISBN 0321227255, <a class="reference" href="http://www.awprofessional.com/titles/0321227255" target="_top">http://www.awprofessional.com/titles/0321227255</a>. 25Copyright (c) 2005 by Pearson Education, Inc. Reprinted with permission.</td> 26</tr> 27</tbody> 28</table> 29<p>With the foundation laid so far, we're ready to explore one of the 30most basic uses for template metaprogramming techniques: adding 31static type checking to traditionally unchecked operations. We'll 32look at a practical example from science and engineering that can 33find applications in almost any numerical code. 34Along the way you'll learn some important new concepts and 35get a taste of metaprogramming at a high level using the MPL.</p> 36<ul class="toc simple" id="outline"> 37<li><a class="reference" href="./dimensional-analysis.html" id="id41" name="id41">Dimensional Analysis</a></li> 38<li><a class="reference" href="./higher-order.html" id="id47" name="id47">Higher-Order Metafunctions</a></li> 39<li><a class="reference" href="./handling-placeholders.html" id="id48" name="id48">Handling Placeholders</a></li> 40<li><a class="reference" href="./more-lambda-capabilities.html" id="id51" name="id51">More Lambda Capabilities</a></li> 41<li><a class="reference" href="./lambda-details.html" id="id54" name="id54">Lambda Details</a></li> 42<li><a class="reference" href="./details.html" id="id59" name="id59">Details</a></li> 43<li><a class="reference" href="./exercises.html" id="id60" name="id60">Exercises</a></li> 44</ul> 45</div> 46 47<div class="footer-separator"></div> 48<table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="../index.html" class="navigation-link">Prev</a> <a href="./dimensional-analysis.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group">Back <a href="./reference-manual.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="../index.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> 49</tr></table></body> 50</html> 51