mirror of
https://github.com/boostorg/iostreams.git
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70 lines
2.1 KiB
HTML
Executable File
70 lines
2.1 KiB
HTML
Executable File
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML>
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<HEAD>
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<TITLE>Direct</TITLE>
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<LINK REL='stylesheet' HREF='../../../../boost.css'>
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<LINK REL='stylesheet' HREF='../theme/iostreams.css'>
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</HEAD>
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<BODY>
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<!-- Begin Banner -->
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<H1 CLASS='title'>Direct</H1>
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<HR CLASS='banner'>
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<!-- End Banner -->
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<H2>Description</H2>
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<P>
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A Device is Direct if it provides access to its controlled sequences as in-memory arrays rather than <I>via</I> a socket-like interface. The difference between a Device which is Direct and one which is not is reflected in the specifications of the various Device refinements, <I>e.g.</I>, <A HREF="source.html">Source</A> and <A HREF="sink.html">Sink</A>.</P>
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</P>
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<P>
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A model of <A HREF='device.html'>Device</A> which does not model Direct is called <SPAN CLASS='term'>indirect</SPAN>.
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</P>
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<H2>Refinement of</H2>
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<P><A HREF='device.html'>Device</A>.</P>
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<A NAME='types'></A>
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<H2>Associated Types</H2>
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<P>Same as <A HREF='device.html#types'>Device</A>, with the following additional requirements:</P>
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<TABLE CELLPADDING='5' BORDER='1'>
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<TR><TD>Category</TD><TD>A type convertible to <A HREF="../traits.html#category_tags">device_tag</A> and to <A HREF="../traits.html#category_tags">direct_tag</A></TD></TR>
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</TABLE>
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<P>Same as <A HREF='device.html'>Device</A>.</P>
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<A NAME='expressions'></A>
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<H2>Valid Expressions / Semantics</H2>
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<P>Same as <A HREF='device.html'>Device</A>.</P>
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<H2>Models</H2>
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<UL>
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<LI>The <A HREF='../classes/array.html'>Array Devices</A>
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<LI>The <A HREF='../classes/mapped_file.html'>Memory-Mapped File Devices</A>
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</UL>
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<!-- Begin Footer -->
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<HR>
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<P CLASS='copyright'>Revised
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<!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan -->
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20 May, 2004
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<!--webbot bot="Timestamp" endspan i-checksum="38504" -->
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</P>
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<P CLASS='copyright'>© Copyright Jonathan Turkanis, 2004</P>
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<P CLASS='copyright'>
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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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</P>
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<!-- End Footer -->
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</BODY> |