[ceph.git] / ceph / src / boost / libs / property_map / doc / const_assoc_property_map.html

<HTML>
<!--
     Copyright (c) Jeremy Siek, Lie-Quan Lee, and Andrew Lumsdaine 2000
    
     Distributed under the Boost Software License, Version 1.0.
     (See accompanying file LICENSE_1_0.txt or copy at
     http://www.boost.org/LICENSE_1_0.txt)
  -->
<Head>
<Title>Constant Associative Property Map Adaptor</Title>
<BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b" 
	ALINK="#ff0000"> 
<IMG SRC="../../../boost.png" 
     ALT="C++ Boost" width="277" height="86"> 

<BR Clear>


<H2><A NAME="sec:const-associative-property-map"></A>
</h2>
<PRE>
const_associative_property_map&lt;UniquePairAssociativeContainer&gt;
</PRE>

<P>
This property map is an adaptor that converts any type that is a model
of both <a
href="http://www.sgi.com/tech/stl/PairAssociativeContainer.html">Pair
Associative Container</a> and <a
href="http://www.sgi.com/tech/stl/UniqueAssociativeContainer.html">Unique
Associative Container</a> such as <a
href="http://www.sgi.com/tech/stl/Map.html"><tt>std::map</tt></a> into
a constant <a href="./LvaluePropertyMap.html">Lvalue Property Map</a>.
Note that the adaptor only retains a reference to the container, so
the lifetime of the container must encompass the use of the adaptor.
</P>

<h3>Example</h3>

<a href="../example/example1.cpp">example1.cpp</a>:
<pre>
<font color="#008040">#include &lt;iostream&gt;</font>
<font color="#008040">#include &lt;map&gt;</font>
<font color="#008040">#include &lt;string&gt;</font>
<font color="#008040">#include &lt;boost/property_map/property_map.hpp&gt;</font>


<B>template</B> &lt;<B>typename</B> ConstAddressMap&gt;
<B>void</B> display(ConstAddressMap address)
{
  <B>typedef</B> <B>typename</B> boost::property_traits&lt;ConstAddressMap&gt;::value_type
    value_type;
  <B>typedef</B> <B>typename</B> boost::property_traits&lt;ConstAddressMap&gt;::key_type key_type;

  key_type fred = <font color="#0000FF">"Fred"</font>;
  key_type joe = <font color="#0000FF">"Joe"</font>;

  value_type freds_address = get(address, fred);
  value_type joes_address = get(address, joe);
  
  std::cout &lt;&lt; fred &lt;&lt; <font color="#0000FF">": "</font> &lt;&lt; freds_address &lt;&lt; <font color="#0000FF">"\n"</font>
	    &lt;&lt; joe  &lt;&lt; <font color="#0000FF">": "</font> &lt;&lt; joes_address  &lt;&lt; <font color="#0000FF">"\n"</font>;
}

<B>int</B>
main()
{
  std::map&lt;std::string, std::string&gt; name2address;
  boost::const_associative_property_map&lt; std::map&lt;std::string, std::string&gt; &gt;
    address_map(name2address);

  name2address.insert(make_pair(std::string(<font color="#0000FF">"Fred"</font>), 
				std::string(<font color="#0000FF">"710 West 13th Street"</font>)));
  name2address.insert(make_pair(std::string(<font color="#0000FF">"Joe"</font>), 
				std::string(<font color="#0000FF">"710 West 13th Street"</font>)));

  display(address_map);
  
  <B>return</B> EXIT_SUCCESS;
}


</PRE>

<H3>Where Defined</H3>

<P>
<a href="../../../boost/property_map/property_map.hpp"><TT>boost/property_map/property_map.hpp</TT></a>

<p>
<H3>Model Of</H3>

<a href="./LvaluePropertyMap.html">Lvalue Property Map</a>

<P>

<H3>Template Parameters</H3>

<P>

<TABLE border>
<TR>
<th>Parameter</th><th>Description</th><th>Default</th>
</tr>


<TR>
<TD><TT>UniquePairAssociativeContainer</TT></TD> 
<TD>Must be a model of both <a
href="http://www.sgi.com/tech/stl/PairAssociativeContainer.html">Pair
Associative Container</a> and <a
href="http://www.sgi.com/tech/stl/UniqueAssociativeContainer.html">Unique
Associative Container</a> .</TD>
<TD>&nbsp;</td>
</tr>

</TABLE>
<P>

<H3>Members</H3>

<P>
In addition to the methods and functions required by <a
href="./LvaluePropertyMap.html">Lvalue Property Map</a>, this
class has the following members.

<hr>

<pre>
property_traits&lt;const_associative_property_map&gt;::value_type
</pre>
This is the same type as
<TT>UniquePairAssociativeContainer::data_type</TT>.

<hr>

<pre>
const_associative_property_map()
</pre>
Default Constructor.

<pre>
const_associative_property_map(const UniquePairAssociativeContainer&amp; c)
</pre>
Constructor.

<hr>

<pre>
const data_type&amp; operator[](const key_type&amp; k) const
</pre>
The operator bracket for property access.
The <TT>key_type</TT> and
<TT>data_type</TT> types are from the typedefs inside of
<TT>UniquePairAssociativeContainer</TT>.

<hr>

<h3>Non-Member functions</h3>

<hr>

<pre>
  template &lt;typename UniquePairAssociativeContainer&gt;
  const_associative_property_map&lt;UniquePairAssociativeContainer&gt;
  make_assoc_property_map(const UniquePairAssociativeContainer&amp; c);
</pre>
A function for conveniently creating an associative property map.


<hr>


<br>
<HR>
<TABLE>
<TR valign=top>
<TD nowrap>Copyright &copy 2002</TD><TD>
<a HREF="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</a>,
Indiana University (<A
HREF="mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</A>)<br>
<A HREF="http://www.boost.org/people/liequan_lee.htm">Lie-Quan Lee</A>, Indiana University (<A HREF="mailto:llee1@osl.iu.edu">llee1@osl.iu.edu</A>)<br>
<A HREF="http://www.osl.iu.edu/~lums">Andrew Lumsdaine</A>,
Indiana University (<A
HREF="mailto:lums@osl.iu.edu">lums@osl.iu.edu</A>)
</TD></TR></TABLE>

</BODY>
</HTML>
Commit	Line	Data
7c673cae FG	1	<HTML>
	2	<!--
	3	Copyright (c) Jeremy Siek, Lie-Quan Lee, and Andrew Lumsdaine 2000
	4
	5	Distributed under the Boost Software License, Version 1.0.
	6	(See accompanying file LICENSE_1_0.txt or copy at
	7	http://www.boost.org/LICENSE_1_0.txt)
	8	-->
	9	<Head>
	10	<Title>Constant Associative Property Map Adaptor</Title>
	11	<BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b"
	12	ALINK="#ff0000">
	13	<IMG SRC="../../../boost.png"
	14	ALT="C++ Boost" width="277" height="86">
	15
	16	<BR Clear>
	17
	18
	19	<H2><A NAME="sec:const-associative-property-map"></A>
	20	</h2>
	21	<PRE>
	22	const_associative_property_map<UniquePairAssociativeContainer>
	23	</PRE>
	24
	25	<P>
	26	This property map is an adaptor that converts any type that is a model
	27	of both <a
	28	href="http://www.sgi.com/tech/stl/PairAssociativeContainer.html">Pair
	29	Associative Container</a> and <a
	30	href="http://www.sgi.com/tech/stl/UniqueAssociativeContainer.html">Unique
	31	Associative Container</a> such as <a
	32	href="http://www.sgi.com/tech/stl/Map.html"><tt>std::map</tt></a> into
	33	a constant <a href="./LvaluePropertyMap.html">Lvalue Property Map</a>.
	34	Note that the adaptor only retains a reference to the container, so
	35	the lifetime of the container must encompass the use of the adaptor.
	36	</P>
	37
	38	<h3>Example</h3>
	39
	40	<a href="../example/example1.cpp">example1.cpp</a>:
	41	<pre>
	42	<font color="#008040">#include <iostream></font>
	43	<font color="#008040">#include <map></font>
	44	<font color="#008040">#include <string></font>
	45	<font color="#008040">#include <boost/property_map/property_map.hpp></font>
	46
	47
	48	<B>template</B> <<B>typename</B> ConstAddressMap>
	49	<B>void</B> display(ConstAddressMap address)
	50	{
	51	<B>typedef</B> <B>typename</B> boost::property_traits<ConstAddressMap>::value_type
	52	value_type;
	53	<B>typedef</B> <B>typename</B> boost::property_traits<ConstAddressMap>::key_type key_type;
	54
	55	key_type fred = <font color="#0000FF">"Fred"</font>;
	56	key_type joe = <font color="#0000FF">"Joe"</font>;
	57
	58	value_type freds_address = get(address, fred);
	59	value_type joes_address = get(address, joe);
	60
	61	std::cout << fred << <font color="#0000FF">": "</font> << freds_address << <font color="#0000FF">"\n"</font>
	62	<< joe << <font color="#0000FF">": "</font> << joes_address << <font color="#0000FF">"\n"</font>;
	63	}
	64
65	<B>int</B>
66	main()
67	{
68	std::map<std::string, std::string> name2address;
69	boost::const_associative_property_map< std::map<std::string, std::string> >
70	address_map(name2address);
71
72	name2address.insert(make_pair(std::string(<font color="#0000FF">"Fred"</font>),
73	std::string(<font color="#0000FF">"710 West 13th Street"</font>)));
74	name2address.insert(make_pair(std::string(<font color="#0000FF">"Joe"</font>),
75	std::string(<font color="#0000FF">"710 West 13th Street"</font>)));
76
77	display(address_map);
78
79	<B>return</B> EXIT_SUCCESS;
80	}
81
82
83	</PRE>
84
85	<H3>Where Defined</H3>
86
87	<P>
88	<a href="../../../boost/property_map/property_map.hpp"><TT>boost/property_map/property_map.hpp</TT></a>
89
90	<p>
91	<H3>Model Of</H3>
92
93	<a href="./LvaluePropertyMap.html">Lvalue Property Map</a>
94
95	<P>
96
97	<H3>Template Parameters</H3>
98
99	<P>
100
101	<TABLE border>
102	<TR>
103	<th>Parameter</th><th>Description</th><th>Default</th>
104	</tr>
105
106
107	<TR>
108	<TD><TT>UniquePairAssociativeContainer</TT></TD>
109	<TD>Must be a model of both <a
110	href="http://www.sgi.com/tech/stl/PairAssociativeContainer.html">Pair
111	Associative Container</a> and <a
112	href="http://www.sgi.com/tech/stl/UniqueAssociativeContainer.html">Unique
113	Associative Container</a> .</TD>
114	<TD> </td>
115	</tr>
116
117	</TABLE>
118	<P>
119
120	<H3>Members</H3>
121
122	<P>
123	In addition to the methods and functions required by <a
124	href="./LvaluePropertyMap.html">Lvalue Property Map</a>, this
125	class has the following members.
126
127	<hr>
128
129	<pre>
130	property_traits<const_associative_property_map>::value_type
131	</pre>
132	This is the same type as
133	<TT>UniquePairAssociativeContainer::data_type</TT>.
134
135	<hr>
136
137	<pre>
138	const_associative_property_map()
139	</pre>
140	Default Constructor.
141
142	<pre>
143	const_associative_property_map(const UniquePairAssociativeContainer& c)
144	</pre>
145	Constructor.
146
147	<hr>
148
149	<pre>
150	const data_type& operator[](const key_type& k) const
151	</pre>
152	The operator bracket for property access.
153	The <TT>key_type</TT> and
154	<TT>data_type</TT> types are from the typedefs inside of
155	<TT>UniquePairAssociativeContainer</TT>.
156
157	<hr>
158
159	<h3>Non-Member functions</h3>
160
161	<hr>
162
163	<pre>
164	template <typename UniquePairAssociativeContainer>
165	const_associative_property_map<UniquePairAssociativeContainer>
166	make_assoc_property_map(const UniquePairAssociativeContainer& c);
167	</pre>
168	A function for conveniently creating an associative property map.
169
170
171
172	<hr>
173
174
175	<br>
176	<HR>
177	<TABLE>
178	<TR valign=top>
179	<TD nowrap>Copyright &copy 2002</TD><TD>
180	<a HREF="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</a>,
181	Indiana University (<A
182	HREF="mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</A>)<br>
183	<A HREF="http://www.boost.org/people/liequan_lee.htm">Lie-Quan Lee</A>, Indiana University (<A HREF="mailto:llee1@osl.iu.edu">llee1@osl.iu.edu</A>)<br>
184	<A HREF="http://www.osl.iu.edu/~lums">Andrew Lumsdaine</A>,
185	Indiana University (<A
186	HREF="mailto:lums@osl.iu.edu">lums@osl.iu.edu</A>)
187	</TD></TR></TABLE>
188
189	</BODY>
190	</HTML>