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    <TITLE>OptimallyBuffered</TITLE>
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    <H1 CLASS="title">OptimallyBuffered</H1>
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<H2>Description</H2>

<P>
    A OptimallyBuffered Filter or Device provides a way for the Iostreams library to determine the best size of buffer to allocate for it if the user doesn't explicitly specify a buffer size.
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<H2>Refinement of</H2>

<A NAME="types"></A>
<H2>Associated Types</H2>

<H2>Notation</H2>

<TABLE CELLPADDING="2">
    <TR><TD><CODE>O</CODE></TD><TD>-</TD><TD>A type which is a model of OptimallyBuffered</TD></TR>
    <TR><TD><CODE>o</CODE></TD><TD>-</TD><TD>Object of type <CODE>O</CODE></TD></TR>
    <TR><TD><CODE>io</CODE></TD><TD>-</TD><TD>Alias for namespace <CODE>boost::iostreams</CODE></TD></TR>
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<H2>Valid Expressions / Semantics</H2>

<TABLE CELLPADDING="5" BORDER="1">
    <TR><TH>Expression</TH><TH>Expression Type</TH><TH>Semantics</TH></TR>
    <TR>
        <TD>
            <PRE CLASS="plain_code"><CODE><A HREF="../functions/optimal_buffer_size.html">io::optimal_buffer_size</A>(o)</CODE></PRE>
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        <TD><CODE>std::streamsize</CODE></TD>
        <TD>Returns the size of buffer that should be allocated for <CODE>o</CODE> if the user has not explicitly specified a buffer size.</TD>
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<H2>Models</H2>
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    <LI><A HREF="../classes/counter.html"><CODE>basic_counter</CODE></A>
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<P CLASS="copyright">Revised 02 Feb 2008</P>

<P CLASS="copyright">&copy; Copyright 2008 <a href="http://www.coderage.com/" target="_top">CodeRage, LLC</a><br/>&copy; 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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