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<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2012 Eric Niebler
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)
-->
<header name="boost/proto/functional/range/empty.hpp">
<para>Includes Proto callable <code><classname>boost::proto::functional::empty</classname></code>.</para>
<namespace name="boost">
<namespace name="proto">
<namespace name="functional">
<!-- proto::functional::empty -->
<struct name="empty">
<purpose>A <conceptname>PolymorphicFunctionObject</conceptname> type that invokes the
<code>boost::empty()</code> function on its arguments.</purpose>
<description>
<para>
A <conceptname>PolymorphicFunctionObject</conceptname> type that invokes the
<code>boost::empty()</code> function on its arguments.</para>
</description>
<inherit>
<type><classname>proto::callable</classname></type>
</inherit>
<typedef name="result_type">
<type>bool</type>
</typedef>
<method-group name="public member functions">
<method name="operator()" cv="const">
<type>bool</type>
<template>
<template-type-parameter name="Range"/>
</template>
<parameter name="rng">
<paramtype>Range const &</paramtype>
</parameter>
<returns>
<para><code>boost::empty(rng)</code></para>
</returns>
</method>
</method-group>
</struct>
</namespace>
</namespace>
</namespace>
</header>
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