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[SVN r47205]
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Joel de Guzman
2008-07-08 02:43:21 +00:00
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doc/html/fusion/view/transform_view.html
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>transform_view</title>
<link rel="stylesheet" href="../../../../../../doc/html/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
<link rel="up" href="../view.html" title="View">
<link rel="prev" href="zip_view.html" title="zip_view">
@@ -12,10 +12,10 @@
<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>
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<td align="center"><a href="../../../../../../more/index.htm">More</a></td>
</tr></table>
<hr>
@@ -24,47 +24,46 @@
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h3 class="title">
<a name="fusion.view.transform_view"></a><a class="link" href="transform_view.html" title="transform_view">transform_view</a>
</h3></div></div></div>
<a name="fusion.view.transform_view"></a><a href="transform_view.html" title="transform_view">transform_view</a></h3></div></div></div>
<p>
The unary version of <code class="computeroutput"><span class="identifier">transform_view</span></code>
The unary version of <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
presents a view of its underlying sequence given a unary function object
or function pointer. The binary version of <code class="computeroutput"><span class="identifier">transform_view</span></code>
or function pointer. The binary version of <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
presents a view of 2 underlying sequences, given a binary function object
or function pointer. The <code class="computeroutput"><span class="identifier">transform_view</span></code>
inherits the traversal characteristics (see <a class="link" href="../sequence/concepts.html#fusion.sequence.concepts.traversal">Sequence
or function pointer. The <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
inherits the traversal characteristics (see <a href="../sequence/concepts.html#fusion.sequence.concepts.traversal">Sequence
Traversal Concept</a>) of its underlying sequence or sequences.
</p>
<a name="fusion.view.transform_view.header"></a><h5>
<a name="id2737136"></a>
<a class="link" href="transform_view.html#fusion.view.transform_view.header">Header</a>
</h5>
<a name="fusion.view.transform_view.header"></a><h4>
<a name="id570320"></a>
<a href="transform_view.html#fusion.view.transform_view.header">Header</a>
</h4>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">view</span><span class="special">/</span><span class="identifier">transform_view</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">transform_view</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.view.transform_view.synopsis"></a><h5>
<a name="id2737278"></a>
<a class="link" href="transform_view.html#fusion.view.transform_view.synopsis">Synopsis</a>
</h5>
<a name="fusion.view.transform_view.synopsis"></a><h4>
<a name="id570478"></a>
<a href="transform_view.html#fusion.view.transform_view.synopsis">Synopsis</a>
</h4>
<p>
<span class="bold"><strong>Unary Version</strong></span>
<span class="bold"><b>Unary Version</b></span>
</p>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">F1</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">transform_view</span><span class="special">;</span>
</pre>
<p>
<span class="bold"><strong>Binary Version</strong></span>
<span class="bold"><b>Binary Version</b></span>
</p>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sequence1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">Sequence2</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">F2</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">transform_view</span><span class="special">;</span>
</pre>
<a name="fusion.view.transform_view.template_parameters"></a><h5>
<a name="id2737463"></a>
<a class="link" href="transform_view.html#fusion.view.transform_view.template_parameters">Template parameters</a>
</h5>
<a name="fusion.view.transform_view.template_parameters"></a><h4>
<a name="id570686"></a>
<a href="transform_view.html#fusion.view.transform_view.template_parameters">Template parameters</a>
</h4>
<div class="informaltable"><table class="table">
<colgroup>
<col>
@@ -92,12 +91,13 @@
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">Sequence</span></code>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A <a class="link" href="../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
A <a href="../sequence/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
@@ -109,12 +109,13 @@
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">Sequence1</span></code>
<tt class="computeroutput"><span class="identifier">Sequence1</span></tt>
</p>
</td>
<td>
<p>
A <a class="link" href="../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
A <a href="../sequence/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
@@ -126,12 +127,13 @@
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">Sequence2</span></code>
<tt class="computeroutput"><span class="identifier">Sequence2</span></tt>
</p>
</td>
<td>
<p>
A <a class="link" href="../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
A <a href="../sequence/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
@@ -143,14 +145,14 @@
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">F1</span></code>
<tt class="computeroutput"><span class="identifier">F1</span></tt>
</p>
</td>
<td>
<p>
A unary function object or function pointer. <code class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></code></a><span class="special">&lt;</span><span class="identifier">F1</span><span class="special">(</span><span class="identifier">E</span><span class="special">)&gt;::</span><span class="identifier">type</span></code> is the return type of an instance
of <code class="computeroutput"><span class="identifier">F1</span></code> when called
with a value of each element type <code class="computeroutput"><span class="identifier">E</span></code>
A unary function object or function pointer. <tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F1</span><span class="special">(</span><span class="identifier">E</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of an instance
of <tt class="computeroutput"><span class="identifier">F1</span></tt> when called
with a value of each element type <tt class="computeroutput"><span class="identifier">E</span></tt>
in the input sequence.
</p>
</td>
@@ -162,14 +164,14 @@
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">F2</span></code>
<tt class="computeroutput"><span class="identifier">F2</span></tt>
</p>
</td>
<td>
<p>
A binary function object or function pointer. <code class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></code></a><span class="special">&lt;</span><span class="identifier">F2</span><span class="special">(</span><span class="identifier">E1</span><span class="special">,</span> <span class="identifier">E2</span><span class="special">)&gt;::</span><span class="identifier">type</span></code> is the return type of an instance
of <code class="computeroutput"><span class="identifier">F2</span></code> when called
with a value of each corresponding pair of element type <code class="computeroutput"><span class="identifier">E1</span></code> and <code class="computeroutput"><span class="identifier">E2</span></code>
A binary function object or function pointer. <tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F2</span><span class="special">(</span><span class="identifier">E1</span><span class="special">,</span> <span class="identifier">E2</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of an instance
of <tt class="computeroutput"><span class="identifier">F2</span></tt> when called
with a value of each corresponding pair of element type <tt class="computeroutput"><span class="identifier">E1</span></tt> and <tt class="computeroutput"><span class="identifier">E2</span></tt>
in the input sequences.
</p>
</td>
@@ -180,73 +182,79 @@
</tr>
</tbody>
</table></div>
<a name="fusion.view.transform_view.model_of"></a><h5>
<a name="id2737882"></a>
<a class="link" href="transform_view.html#fusion.view.transform_view.model_of">Model of</a>
</h5>
<a name="fusion.view.transform_view.model_of"></a><h4>
<a name="id571151"></a>
<a href="transform_view.html#fusion.view.transform_view.model_of">Model of</a>
</h4>
<div class="itemizedlist"><ul type="disc"><li>
<a class="link" href="../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward Sequence</a>,
<a class="link" href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional Sequence">Bidirectional
Sequence</a> or <a class="link" href="../sequence/concepts/random_access_sequence.html" title="Random Access Sequence">Random
<a href="../sequence/concepts/forward_sequence.html" title="Forward
Sequence">Forward Sequence</a>,
<a href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a> or <a href="../sequence/concepts/random_access_sequence.html" title="Random
Access Sequence">Random
Access Sequence</a> depending on the traversal characteristics (see
<a class="link" href="../sequence/concepts.html#fusion.sequence.concepts.traversal">Sequence Traversal Concept</a>)
<a href="../sequence/concepts.html#fusion.sequence.concepts.traversal">Sequence Traversal Concept</a>)
of its underlying sequence.
</li></ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><code class="computeroutput"><span class="identifier">TV</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">TV</span></tt></span></dt>
<dd><p>
A <code class="computeroutput"><span class="identifier">transform_view</span></code> type
A <tt class="computeroutput"><span class="identifier">transform_view</span></tt> type
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">BTV</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">BTV</span></tt></span></dt>
<dd><p>
A binary <code class="computeroutput"><span class="identifier">transform_view</span></code>
A binary <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
type
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">UTV</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">UTV</span></tt></span></dt>
<dd><p>
A unary <code class="computeroutput"><span class="identifier">transform_view</span></code>
A unary <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
type
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">f1</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f1</span></tt></span></dt>
<dd><p>
An instance of <code class="computeroutput"><span class="identifier">F1</span></code>
An instance of <tt class="computeroutput"><span class="identifier">F1</span></tt>
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">f2</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f2</span></tt></span></dt>
<dd><p>
An instance of <code class="computeroutput"><span class="identifier">F2</span></code>
An instance of <tt class="computeroutput"><span class="identifier">F2</span></tt>
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">s</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">s</span></tt></span></dt>
<dd><p>
An instance of <code class="computeroutput"><span class="identifier">Sequence</span></code>
An instance of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">s1</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">s1</span></tt></span></dt>
<dd><p>
An instance of <code class="computeroutput"><span class="identifier">Sequence1</span></code>
An instance of <tt class="computeroutput"><span class="identifier">Sequence1</span></tt>
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">s2</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">s2</span></tt></span></dt>
<dd><p>
An instance of <code class="computeroutput"><span class="identifier">Sequence2</span></code>
An instance of <tt class="computeroutput"><span class="identifier">Sequence2</span></tt>
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">tv</span></code>,
<code class="computeroutput"><span class="identifier">tv2</span></code></span></dt>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">tv</span></tt>,
<tt class="computeroutput"><span class="identifier">tv2</span></tt></span></dt>
<dd><p>
Instances of <code class="computeroutput"><span class="identifier">transform_view</span></code>
Instances of <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.view.transform_view.expression_semantics"></a><h5>
<a name="id2738244"></a>
<a class="link" href="transform_view.html#fusion.view.transform_view.expression_semantics">Expression
<a name="fusion.view.transform_view.expression_semantics"></a><h4>
<a name="id571552"></a>
<a href="transform_view.html#fusion.view.transform_view.expression_semantics">Expression
Semantics</a>
</h5>
</h4>
<p>
Semantics of an expression is defined only where it differs from, or is not
defined in <a class="link" href="../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
Sequence</a>, <a class="link" href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional Sequence">Bidirectional
Sequence</a> or <a class="link" href="../sequence/concepts/random_access_sequence.html" title="Random Access Sequence">Random
Access Sequence</a> depending on the traversal characteristics (see <a class="link" href="../sequence/concepts.html#fusion.sequence.concepts.traversal">Sequence Traversal Concept</a>)
defined in <a href="../sequence/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <a href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a> or <a href="../sequence/concepts/random_access_sequence.html" title="Random
Access Sequence">Random
Access Sequence</a> depending on the traversal characteristics (see <a href="../sequence/concepts.html#fusion.sequence.concepts.traversal">Sequence Traversal Concept</a>)
of its underlying sequence or sequences.
</p>
<div class="informaltable"><table class="table">
@@ -270,68 +278,68 @@
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">UTV</span><span class="special">(</span><span class="identifier">s</span><span class="special">,</span> <span class="identifier">f1</span><span class="special">)</span></code>
<tt class="computeroutput"><span class="identifier">UTV</span><span class="special">(</span><span class="identifier">s</span><span class="special">,</span> <span class="identifier">f1</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a unary <code class="computeroutput"><span class="identifier">transform_view</span></code>
given sequence, <code class="computeroutput"><span class="identifier">s</span></code>
and unary function object or function pointer, <code class="computeroutput"><span class="identifier">f1</span></code>.
Creates a unary <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
given sequence, <tt class="computeroutput"><span class="identifier">s</span></tt>
and unary function object or function pointer, <tt class="computeroutput"><span class="identifier">f1</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">BTV</span><span class="special">(</span><span class="identifier">s1</span><span class="special">,</span> <span class="identifier">s2</span><span class="special">,</span> <span class="identifier">f2</span><span class="special">)</span></code>
<tt class="computeroutput"><span class="identifier">BTV</span><span class="special">(</span><span class="identifier">s1</span><span class="special">,</span> <span class="identifier">s2</span><span class="special">,</span> <span class="identifier">f2</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a binary <code class="computeroutput"><span class="identifier">transform_view</span></code>
given sequences, <code class="computeroutput"><span class="identifier">s1</span></code>
and <code class="computeroutput"><span class="identifier">s2</span></code> and binary
function object or function pointer, <code class="computeroutput"><span class="identifier">f2</span></code>.
Creates a binary <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
given sequences, <tt class="computeroutput"><span class="identifier">s1</span></tt>
and <tt class="computeroutput"><span class="identifier">s2</span></tt> and binary
function object or function pointer, <tt class="computeroutput"><span class="identifier">f2</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">TV</span><span class="special">(</span><span class="identifier">tv</span><span class="special">)</span></code>
<tt class="computeroutput"><span class="identifier">TV</span><span class="special">(</span><span class="identifier">tv</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Copy constructs a <code class="computeroutput"><span class="identifier">transform_view</span></code>
from another <code class="computeroutput"><span class="identifier">transform_view</span></code>,
<code class="computeroutput"><span class="identifier">tv</span></code>.
Copy constructs a <tt class="computeroutput"><span class="identifier">transform_view</span></tt>
from another <tt class="computeroutput"><span class="identifier">transform_view</span></tt>,
<tt class="computeroutput"><span class="identifier">tv</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">tv</span> <span class="special">=</span>
<span class="identifier">tv2</span></code>
<tt class="computeroutput"><span class="identifier">tv</span> <span class="special">=</span>
<span class="identifier">tv2</span></tt>
</p>
</td>
<td>
<p>
Assigns to a <code class="computeroutput"><span class="identifier">transform_view</span></code>,
<code class="computeroutput"><span class="identifier">tv</span></code>, from another
<code class="computeroutput"><span class="identifier">transform_view</span></code>,
<code class="computeroutput"><span class="identifier">tv2</span></code>.
Assigns to a <tt class="computeroutput"><span class="identifier">transform_view</span></tt>,
<tt class="computeroutput"><span class="identifier">tv</span></tt>, from another
<tt class="computeroutput"><span class="identifier">transform_view</span></tt>,
<tt class="computeroutput"><span class="identifier">tv2</span></tt>.
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.view.transform_view.example"></a><h5>
<a name="id2738677"></a>
<a class="link" href="transform_view.html#fusion.view.transform_view.example">Example</a>
</h5>
<a name="fusion.view.transform_view.example"></a><h4>
<a name="id572032"></a>
<a href="transform_view.html#fusion.view.transform_view.example">Example</a>
</h4>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">square</span>
<span class="special">{</span>
@@ -350,7 +358,7 @@
<span class="special">}</span>
<span class="special">};</span>
<span class="keyword">typedef</span> <a class="link" href="../container/vector.html" title="vector"><code class="computeroutput"><span class="identifier">vector</span></code></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">short</span><span class="special">,</span> <span class="keyword">double</span><span class="special">&gt;</span> <span class="identifier">vector_type</span><span class="special">;</span>
<span class="keyword">typedef</span> <a href="../container/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">short</span><span class="special">,</span> <span class="keyword">double</span><span class="special">&gt;</span> <span class="identifier">vector_type</span><span class="special">;</span>
<span class="identifier">vector_type</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">2</span><span class="special">,</span> <span class="number">5</span><span class="special">,</span> <span class="number">3.3</span><span class="special">);</span>
<span class="identifier">transform_view</span><span class="special">&lt;</span><span class="identifier">vector_type</span><span class="special">,</span> <span class="identifier">square</span><span class="special">&gt;</span> <span class="identifier">transform</span><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span> <span class="identifier">square</span><span class="special">());</span>