boost-react-native-bundle

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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Struct as_env</title> <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <link rel="home" href="../../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> <link rel="up" href="../../../proto/reference.html#header.boost.proto.transform.env_hpp" title="Header <boost/proto/transform/env.hpp>"> <link rel="prev" href="../_default/impl.html" title="Struct template impl"> <link rel="next" href="as_env/result.html" title="Struct template result"> </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="../_default/impl.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../proto/reference.html#header.boost.proto.transform.env_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="as_env/result.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> </div> <div class="refentry"> <a name="boost.proto.functional.as_env"></a><div class="titlepage"></div> <div class="refnamediv"> <h2>Struct as_env</h2> boost::proto::functional::as_env — A unary <a class="link" href="../../../PolymorphicFunctionObject.html" title="Concept PolymorphicFunctionObject">PolymorphicFunctionObject</a> for ensuring that an object is a transform environment. If it isn't already, it is turned into one such that the object is associated with the <a class="link" href="../data_type.html" title="Struct data_type">proto::data_type</a> key. </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">// In header: <<a class="link" href="../../../proto/reference.html#header.boost.proto.transform.env_hpp" title="Header <boost/proto/transform/env.hpp>">boost/proto/transform/env.hpp</a>> struct <a class="link" href="as_env.html" title="Struct as_env">as_env</a> : <a class="link" href="../callable.html" title="Struct callable">proto::callable</a> { // member classes/structs/unions template<typename Sig> struct <a class="link" href="as_env/result.html" title="Struct template result">result</a> { // <a class="link" href="as_env/result.html#boost.proto.functional.as_env.resulttypes">types</a> typedef <code>see-below</code> <a class="link" href="as_env/result.html#boost.proto.functional.as_env.result.type">type</a>; }; // <a class="link" href="as_env.html#idp206912592-bb">public member functions</a> template<typename T> <code>see-below</code> <a class="link" href="as_env.html#idp206913712-bb">operator()</a>(T &) const; template<typename T> <code>see-below</code> <a class="link" href="as_env.html#idp206917184-bb">operator()</a>(T const &) const; };</pre></div> <div class="refsect1"> <a name="idp388346656"></a><h2>Description</h2> <div class="refsect2"> <a name="idp388347072"></a><h3> <a name="idp206912592-bb"></a><code class="computeroutput">as_env</code> public member functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> <pre class="literallayout"><a name="idp206913152-bb"></a>template<typename T> <code>see-below</code> <a name="idp206913712-bb"></a>operator()(T & t) const; template<typename T> <code>see-below</code> <a name="idp206917184-bb"></a>operator()(T const & t) const;</pre> If <code class="computeroutput"><a class="link" href="../is_env.html" title="Struct template is_env">proto::is_env</a><T>::value</code> is <code class="computeroutput">false</code>, this function returns the result of <code class="computeroutput">(<a class="link" href="../data.html" title="Global data">proto::data</a> = t)</code>. See <code class="computeroutput"><a class="link" href="../data_type.html#idp206883184-bb">proto::data_type::operator=</a></code> for details. Otherwise, this function returns <code class="computeroutput">t</code> by reference. </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 © 2008 Eric Niebler 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>) </div></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="../_default/impl.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../proto/reference.html#header.boost.proto.transform.env_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="as_env/result.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>