1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Struct template minimal_expr</title> 6<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="../../yap/reference.html#header.boost.yap.algorithm_fwd_hpp" title="Header <boost/yap/algorithm_fwd.hpp>"> 10<link rel="prev" href="is_expr.html" title="Struct template is_expr"> 11<link rel="next" href="placeholder.html" title="Struct template placeholder"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> 16<td align="center"><a href="../../../../index.html">Home</a></td> 17<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="is_expr.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../yap/reference.html#header.boost.yap.algorithm_fwd_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="placeholder.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.yap.minimal_expr"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Struct template minimal_expr</span></h2> 30<p>boost::yap::minimal_expr</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../yap/reference.html#header.boost.yap.algorithm_fwd_hpp" title="Header <boost/yap/algorithm_fwd.hpp>">boost/yap/algorithm_fwd.hpp</a>> 34 35</span><span class="keyword">template</span><span class="special"><</span><span class="identifier">expr_kind</span> Kind<span class="special">,</span> <span class="keyword">typename</span> Tuple<span class="special">></span> 36<span class="keyword">struct</span> <a class="link" href="minimal_expr.html" title="Struct template minimal_expr">minimal_expr</a> <span class="special">{</span> 37 38 <span class="comment">// public data members</span> 39 <span class="keyword">static</span> <span class="identifier">expr_kind</span> <span class="keyword">const</span> <span class="identifier">kind</span><span class="special">;</span> 40 <span class="identifier">Tuple</span> <span class="identifier">elements</span><span class="special">;</span> 41<span class="special">}</span><span class="special">;</span></pre></div> 42<div class="refsect1"> 43<a name="id-1.3.48.8.2.3.6.4"></a><h2>Description</h2> 44<p>Used as the expression template returned by some operations inside YAP when YAP does not have an expression template it was told to use. For instance, if transform() creates a new expression by transforming an existing expression's elements, it will attempt to create the new expression using the existing one's expression template. If no such template exists because the existing expression was not made from an expression template, <a class="link" href="minimal_expr.html" title="Struct template minimal_expr">minimal_expr</a> is used. </p> 45</div> 46</div> 47<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 48<td align="left"></td> 49<td align="right"><div class="copyright-footer">Copyright © 2018 T. Zachary Laine<p> 50 Distributed under the Boost Software License, Version 1.0. (See accompanying 51 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 52 </p> 53</div></td> 54</tr></table> 55<hr> 56<div class="spirit-nav"> 57<a accesskey="p" href="is_expr.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../yap/reference.html#header.boost.yap.algorithm_fwd_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="placeholder.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 58</div> 59</body> 60</html> 61
