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| <H1 CLASS="title">Class Template <CODE>mode_of</CODE></H1> |
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| <DT><A href="#description">Description</A></DT> |
| <DT><A href="#headers">Headers</A></DT> |
| <DT><A href="#reference">Reference</A></DT> |
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| <H2>Description</H2> |
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| <P><A HREF="http://www.boost.org/libs/mpl/doc/refmanual/metafunction.html" TARGET="_top">Metafunction</A> returning a <A HREF="../guide/modes.html#mode_tags">mode tag</A> corresponding the the <A HREF="../guide/modes.html">mode</A> of a model of one of the <A HREF="../guide/concepts.html#filter_concepts">Filter</A> or <A HREF="../guide/concepts.html#device_concepts">Device</A> concepts.</P> |
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| <DT><A CLASS="header" HREF="../../../../boost/iostreams/traits.hpp"><CODE><boost/iostreams/traits.hpp></CODE></A></DT> |
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| <H2>Reference</H2> |
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| <H4>Synopsis</H4> |
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| <PRE CLASS="broken_ie"><SPAN CLASS="keyword">namespace</SPAN> boost { <SPAN CLASS="keyword">namespace</SPAN> iostreams { |
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| <SPAN CLASS="keyword">template</SPAN><<SPAN CLASS="keyword">typename</SPAN> <A HREF="#template_params" CLASS="documented">T</A>> |
| <SPAN CLASS="keyword">struct</SPAN> mode_of { |
| <SPAN CLASS="keyword">typedef</SPAN> <SPAN CLASS="omitted">see below</SPAN> <A HREF="#type" CLASS="documented">type</A>; |
| }; |
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| } } <SPAN CLASS="comment">// End namespace boost::io</SPAN></PRE> |
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| <A NAME="template_params"></A> |
| <H4>Template parameters</H4> |
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| <TABLE STYLE="margin-left:2em" BORDER=0 CELLPADDING=2> |
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| <TD VALIGN="top"><I>T</I></TD><TD WIDTH="2em" VALIGN="top">-</TD> |
| <TD>A Model of one of the <A HREF="../guide/concepts.html#filter_concepts">Filter</A> or <A HREF="../guide/concepts.html#device_concepts">Device</A> concepts</TD> |
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| <A NAME="type"></A> |
| <H4><CODE>mode_of::type</CODE></H4> |
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| <PRE CLASS="broken_ie"> <SPAN CLASS="keyword">typedef</SPAN> <SPAN CLASS="omitted">implementation-defined</SPAN> <A HREF="#type" CLASS="documented">type</A>;</PRE> |
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| <P>The most-derived <A HREF="../guide/modes.html#mode_tags">mode tag</A> to which <A HREF="../guide/traits.html#category"><CODE>category_of<T>::type</CODE></A> is convertible. If there is no such most-derived tag, a compile-time error occurs.</P> |
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| <P>Modes assigned to standard library types are displayed in the following table.</P> |
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| <TABLE STYLE="margin-bottom:2em" BORDER=1 CELLPADDING=4> |
| <TR><TH><CODE>T</CODE></TH><TH><CODE>category</CODE></TH></TR> |
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| <TD VALIGN="top">Specialization of <CODE>std::basic_iostream</CODE>, or derived from such a specialization</TD> |
| <TD><CODE>seekable</CODE></TD> |
| </TR> |
| <TR> |
| <TD VALIGN="top">Specialization of <CODE>std::basic_istream</CODE>, or derived from such a specialization</TD> |
| <TD><CODE>input_seekable</CODE></TD> |
| </TR> |
| <TR> |
| <TD VALIGN="top">Specialization of <CODE>std::basic_ostream</CODE>, or derived from such a specialization</TD> |
| <TD><CODE>output_seekable</CODE></TD> |
| </TR> |
| <TR> |
| <TD VALIGN="top">Specialization of <CODE>std::basic_streambuf</CODE>, or derived from such a specialization</TD> |
| <TD><CODE>seekable</CODE></TD> |
| </TR> |
| <TR> |
| <TD VALIGN="top">Specialization of <CODE>std::back_insert_iterator</CODE>, or derived from such a specialization</TD> |
| <TD><CODE>output</CODE></TD> |
| </TR> |
| </TABLE> |
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| <P CLASS="copyright">Revised 02 Feb 2008</P> |
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| <P CLASS="copyright">© Copyright 2008 <a href="http://www.coderage.com/" target="_top">CodeRage, LLC</a><br/>© Copyright 2004-2007 <a href="http://www.coderage.com/turkanis/" target="_top">Jonathan Turkanis</a></P> |
| <P CLASS="copyright"> |
| 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">http://www.boost.org/LICENSE_1_0.txt</A>) |
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