File: eval.html

package info (click to toggle)
boost1.42 1.42.0-4
  • links: PTS, VCS
  • area: main
  • in suites: squeeze
  • size: 277,864 kB
  • ctags: 401,076
  • sloc: cpp: 1,235,659; xml: 74,142; ansic: 41,313; python: 26,756; sh: 11,840; cs: 2,118; makefile: 655; perl: 494; yacc: 456; asm: 353; csh: 6
file content (118 lines) | stat: -rwxr-xr-x 8,957 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Struct eval</title>
<link rel="stylesheet" href="../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
<link rel="home" href="../../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset">
<link rel="up" href="../../../proto/reference.html#header.boost.proto.eval_hpp" title="Header &lt;boost/proto/eval.hpp&gt;">
<link rel="prev" href="../domain_of.html" title="Struct template domain_of">
<link rel="next" href="eval/result_This_Expr__Conte_id1235791.html" title="Struct template result&lt;This(Expr, Context)&gt;">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td>
<td align="center"><a href="../../../../../index.html">Home</a></td>
<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td>
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
<td align="center"><a href="../../../../../more/index.htm">More</a></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="../domain_of.html"><img src="../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../proto/reference.html#header.boost.proto.eval_hpp"><img src="../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="eval/result_This_Expr__Conte_id1235791.html"><img src="../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<div class="refentry" title="Struct eval">
<a name="boost.proto.functional.eval"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2><span class="refentrytitle">Struct eval</span></h2>
<p>boost::proto::functional::eval &#8212; A <a class="link" href="../../../PolymorphicFunctionObject.html" title="Concept PolymorphicFunctionObject">PolymorphicFunctionObject</a> type for evaluating a given Proto
            expression with a given context.</p>
</div>
<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="emphasis"><em>// In header: &lt;<a class="link" href="../../../proto/reference.html#header.boost.proto.eval_hpp" title="Header &lt;boost/proto/eval.hpp&gt;">boost/proto/eval.hpp</a>&gt;

</em></span>
<span class="bold"><strong>struct</strong></span> <a class="link" href="eval.html" title="Struct eval">eval</a> : <span class="bold"><strong></strong></span> <span class="type"><a class="link" href="../callable.html" title="Struct callable">proto::callable</a></span> {
  <span class="emphasis"><em>// member classes/structs/unions</em></span>
  <span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> This, <span class="bold"><strong>typename</strong></span> Expr, <span class="bold"><strong>typename</strong></span> Context&gt; 
  <span class="bold"><strong>struct</strong></span> <a class="link" href="eval/result_This_Expr__Conte_id1235791.html" title="Struct template result&lt;This(Expr, Context)&gt;">result</a>&lt;This(Expr, Context)&gt; : <span class="bold"><strong></strong></span> 
    <a class="link" href="../result_of/eval.html" title="Struct template eval">proto::result_of::eval</a>&lt;
      typename boost::remove_reference&lt; Expr &gt;::type, 
      typename boost::remove_reference&lt; Context &gt;::type 
    &gt;
  {
  };

  <span class="emphasis"><em>// <a class="link" href="eval.html#id1235836-bb">public member functions</a></em></span>
  <span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> Expr, <span class="bold"><strong>typename</strong></span> Context&gt; 
    <span class="type"><span class="bold"><strong>typename</strong></span> <a class="link" href="../result_of/eval.html" title="Struct template eval">proto::result_of::eval</a>&lt; Expr, Context &gt;::type</span> 
    <a class="link" href="eval.html#id1235840-bb"><span class="bold"><strong>operator</strong></span>()</a>(Expr &amp;, Context &amp;) <span class="bold"><strong>const</strong></span>;
  <span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> Expr, <span class="bold"><strong>typename</strong></span> Context&gt; 
    <span class="type"><span class="bold"><strong>typename</strong></span> <a class="link" href="../result_of/eval.html" title="Struct template eval">proto::result_of::eval</a>&lt; Expr, Context &gt;::type</span> 
    <a class="link" href="eval.html#id1235925-bb"><span class="bold"><strong>operator</strong></span>()</a>(Expr &amp;, Context <span class="bold"><strong>const</strong></span> &amp;) <span class="bold"><strong>const</strong></span>;
};</pre></div>
<div class="refsect1" title="Description">
<a name="id1582638"></a><h2>Description</h2>
<div class="refsect2" title="eval public member functions">
<a name="id1582641"></a><h3>
<a name="id1235836-bb"></a><code class="computeroutput">eval</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> Expr, <span class="bold"><strong>typename</strong></span> Context&gt; 
  <span class="type"><span class="bold"><strong>typename</strong></span> <a class="link" href="../result_of/eval.html" title="Struct template eval">proto::result_of::eval</a>&lt; Expr, Context &gt;::type</span> 
  <a name="id1235840-bb"></a><span class="bold"><strong>operator</strong></span>()(Expr &amp; expr, Context &amp; context) <span class="bold"><strong>const</strong></span>;</pre>Evaluate a given Proto expression with a given context. <div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">Parameters:</span></p></td>
<td><div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><code class="computeroutput">context</code></span></p></td>
<td><p>The context in which the expression should be evaluated. </p></td>
</tr>
<tr>
<td><p><span class="term"><code class="computeroutput">expr</code></span></p></td>
<td><p>The Proto expression to evaluate.</p></td>
</tr>
</tbody>
</table></div></td>
</tr>
<tr>
<td><p><span class="term">Returns:</span></p></td>
<td><p>
                  <code class="computeroutput">typename Context::template eval&lt;Expr&gt;()(expr, context)</code>
                </p></td>
</tr>
</tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> Expr, <span class="bold"><strong>typename</strong></span> Context&gt; 
  <span class="type"><span class="bold"><strong>typename</strong></span> <a class="link" href="../result_of/eval.html" title="Struct template eval">proto::result_of::eval</a>&lt; Expr, Context &gt;::type</span> 
  <a name="id1235925-bb"></a><span class="bold"><strong>operator</strong></span>()(Expr &amp; expr, Context <span class="bold"><strong>const</strong></span> &amp; context) <span class="bold"><strong>const</strong></span>;</pre>
<p>
                  This is an overloaded member function, provided for convenience. It differs from the above
                  function only in what argument(s) it accepts. 
                </p>
</li>
</ol></div>
</div>
</div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2008 Eric Niebler<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        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>)
      </p>
</div></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="../domain_of.html"><img src="../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../proto/reference.html#header.boost.proto.eval_hpp"><img src="../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="eval/result_This_Expr__Conte_id1235791.html"><img src="../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
</body>
</html>