| 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
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| 2 | <HTML> |
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| 3 | <HEAD> |
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| 4 | <TITLE>Class Template mode_of</TITLE> |
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| 5 | <LINK REL="stylesheet" HREF="../../../../boost.css"> |
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| 6 | <LINK REL="stylesheet" HREF="../theme/iostreams.css"> |
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| 7 | </HEAD> |
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| 8 | <BODY> |
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| 9 | |
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| 10 | <!-- Begin Banner --> |
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| 11 | |
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| 12 | <H1 CLASS="title">Class Template <CODE>mode_of</CODE></H1> |
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| 13 | <HR CLASS="banner"> |
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| 14 | |
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| 15 | <!-- End Banner --> |
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| 16 | |
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| 17 | <DL class="page-index"> |
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| 18 | <DT><A href="#description">Description</A></DT> |
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| 19 | <DT><A href="#headers">Headers</A></DT> |
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| 20 | <DT><A href="#reference">Reference</A></DT> |
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| 21 | </DL> |
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| 22 | |
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| 23 | <HR> |
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| 24 | |
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| 25 | <A NAME="description"></A> |
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| 26 | <H2>Description</H2> |
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| 27 | |
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| 28 | <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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| 29 | |
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| 30 | <A NAME="headers"></A> |
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| 31 | <H2>Headers</H2> |
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| 32 | |
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| 33 | <DL class="page-index"> |
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| 34 | <DT><A CLASS="header" HREF="../../../../boost/iostreams/traits.hpp"><CODE><boost/iostreams/traits.hpp></CODE></A></DT> |
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| 35 | </DL> |
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| 36 | |
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| 37 | <A NAME="reference"></A> |
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| 38 | <H2>Reference</H2> |
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| 39 | |
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| 40 | <H4>Synopsis</H4> |
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| 41 | |
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| 42 | <PRE CLASS="broken_ie"><SPAN CLASS="keyword">namespace</SPAN> boost { <SPAN CLASS="keyword">namespace</SPAN> iostreams { |
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| 43 | |
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| 44 | <SPAN CLASS="keyword">template</SPAN><<SPAN CLASS="keyword">typename</SPAN> <A HREF="#template_params" CLASS="documented">T</A>> |
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| 45 | <SPAN CLASS="keyword">struct</SPAN> mode_of { |
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| 46 | <SPAN CLASS="keyword">typedef</SPAN> <SPAN CLASS="omitted">see below</SPAN> <A HREF="#type" CLASS="documented">type</A>; |
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| 47 | }; |
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| 48 | |
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| 49 | } } <SPAN CLASS="comment">// End namespace boost::io</SPAN></PRE> |
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| 50 | |
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| 51 | <A NAME="template_params"></A> |
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| 52 | <H4>Template parameters</H4> |
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| 53 | |
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| 54 | <TABLE STYLE="margin-left:2em" BORDER=0 CELLPADDING=2> |
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| 55 | <TR> |
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| 56 | <TD VALIGN="top"><I>T</I></TD><TD WIDTH="2em" VALIGN="top">-</TD> |
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| 57 | <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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| 58 | </TR> |
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| 59 | </TABLE> |
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| 60 | |
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| 61 | <A NAME="type"></A> |
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| 62 | <H4><CODE>mode_of::type</CODE></H4> |
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| 63 | |
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| 64 | <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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| 65 | |
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| 66 | <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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| 67 | |
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| 68 | <P>Modes assigned to standard library types are displayed in the following table.</P> |
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| 69 | |
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| 70 | <TABLE STYLE="margin-bottom:2em" BORDER=1 CELLPADDING=4> |
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| 71 | <TR><TH><CODE>T</CODE></TH><TH><CODE>category</CODE></TH></TR> |
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| 72 | <TR> |
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| 73 | <TD VALIGN="top"><A NAME="print_CR"></A>Specialization of <CODE>std::basic_iostream</CODE>, or derived from such a specialization</TD> |
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| 74 | <TD><CODE>seekable</CODE></TD> |
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| 75 | </TR> |
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| 76 | <TR> |
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| 77 | <TD VALIGN="top"><A NAME="print_CR"></A>Specialization of <CODE>std::basic_istream</CODE>, or derived from such a specialization</TD> |
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| 78 | <TD><CODE>input_seekable</CODE></TD> |
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| 79 | </TR> |
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| 80 | <TR> |
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| 81 | <TD VALIGN="top"><A NAME="print_CR"></A>Specialization of <CODE>std::basic_ostream</CODE>, or derived from such a specialization</TD> |
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| 82 | <TD><CODE>output_seekable</CODE></TD> |
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| 83 | </TR> |
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| 84 | <TR> |
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| 85 | <TD VALIGN="top"><A NAME="print_CR"></A>Specialization of <CODE>std::basic_streambuf</CODE>, or derived from such a specialization</TD> |
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| 86 | <TD><CODE>seekable</CODE></TD> |
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| 87 | </TR> |
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| 88 | <TR> |
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| 89 | <TD VALIGN="top"><A NAME="print_CR"></A>Specialization of <CODE>std::back_insert_iterator</CODE>, or derived from such a specialization</TD> |
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| 90 | <TD><CODE>output</CODE></TD> |
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| 91 | </TR> |
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| 92 | </TABLE> |
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| 93 | |
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| 94 | <!-- Begin Footer --> |
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| 95 | |
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| 96 | <HR> |
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| 97 | <P CLASS="copyright">Revised |
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| 98 | <!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan --> |
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| 99 | 20 May, 2004 |
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| 100 | <!--webbot bot="Timestamp" endspan i-checksum="38504" --> |
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| 101 | </P> |
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| 102 | |
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| 103 | <P CLASS="copyright">© Copyright <A HREF="http://www.kangaroologic.com" TARGET="_top">Jonathan Turkanis</A>, 2004</P> |
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| 104 | <P CLASS="copyright"> |
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| 105 | 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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| 106 | </P> |
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| 107 | |
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| 108 | <!-- End Footer --> |
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| 109 | |
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| 110 | </BODY> |
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