1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<HTML> 3<HEAD> 4 <TITLE>Multi-Character Filter</TITLE> 5 <LINK REL="stylesheet" HREF="../../../../boost.css"> 6 <LINK REL="stylesheet" HREF="../theme/iostreams.css"> 7</HEAD> 8<BODY> 9 10<!-- Begin Banner --> 11 12 <H1 CLASS="title">Multi-Character Filter</H1> 13 <HR CLASS="banner"> 14 15<!-- End Banner --> 16 17<H2>Description</H2> 18 19<P><A HREF="filter.html">Filter</A> which provides access to its controlled sequence or sequences several characters at a time. The difference between a Filter which is Multi-Character and one which is not is reflected in the specifications of the various Filter refinements. <I>See</I>, <I>e.g.</I>, <A HREF="input_filter.html">InputFilter</A> and <A HREF="output_filter.html">OutputFilter</A>.</P> 20 21<H2>Refinement of</H2> 22 23<P><A HREF="filter.html">Filter</A>.</P> 24 25<A NAME="types"></A> 26<H2>Associated Types</H2> 27 28<P>Same as <A HREF="filter.html#types">Filter</A>, with the following additional requirements:</P> 29 30<TABLE CELLPADDING="5" BORDER="1"> 31 <TR><TD>Category</TD><TD>A type convertible to <A HREF="../guide/traits.html#category_tags"><CODE>filter_tag</CODE></A> and to <A HREF="../guide/traits.html#category_tags"><CODE>multichar_tag</CODE></A></TD></TR> 32</TABLE> 33 34<A NAME="expressions"></A> 35<H2>Valid Expressions / Semantics</H2> 36 37<P>Same as <A HREF="filter.html">Filter</A>.</P> 38 39<H2>Models</H2> 40 41<UL> 42 <LI>The compression and decompression Filters 43 <LI><A HREF="../classes/regex_filter.html"><CODE>basic_regex_filter</CODE></A> 44 <LI><A HREF="../classes/aggregate.html"><CODE>aggregate_filter</CODE></A> 45 <LI><A HREF="../classes/symmetric_filter.html"><CODE>symmetric_filter</CODE></A> 46</UL> 47 48<!-- Begin Footer --> 49 50<HR> 51 52<P CLASS="copyright">© Copyright 2008 <a href="http://www.coderage.com/" target="_top">CodeRage, LLC</a><br/>© Copyright 2004-2007 <a href="https://www.boost.org/users/people/jonathan_turkanis.html" target="_top">Jonathan Turkanis</a></P> 53<P CLASS="copyright"> 54 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>) 55</P> 56 57<!-- End Footer --> 58 59</BODY>