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haskell-HXT-7.1-2mdv2007.1.i586.rpm

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>Control.Arrow.IOStateListArrow</TITLE
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>hxt-7.1: </TD
><TD CLASS="topbut"
><A HREF="index.html"
>Contents</A
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><A HREF="doc-index.html"
>Index</A
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><FONT SIZE="6"
>Control.Arrow.IOStateListArrow</FONT
></TD
><TD ALIGN="right"
><TABLE CLASS="narrow" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="infohead"
>Portability</TD
><TD CLASS="infoval"
>portable</TD
></TR
><TR
><TD CLASS="infohead"
>Stability</TD
><TD CLASS="infoval"
>experimental</TD
></TR
><TR
><TD CLASS="infohead"
>Maintainer</TD
><TD CLASS="infoval"
>Uwe Schmidt (uwe\@fh-wedel.de)</TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Description</TD
></TR
><TR
><TD CLASS="doc"
><P
>Version    : $Id: IOStateListArrow.hs,v 1.7 2005<EM
>09</EM
>02 17:09:39 hxml Exp $
</P
><P
>Implementation of arrows with IO and a state
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Synopsis</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>newtype</SPAN
> <A HREF="#t%3AIOSLA"
>IOSLA</A
> s a b = <A HREF="#v%3AIOSLA"
>IOSLA</A
> {<TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="recfield"
><A HREF="#v%3ArunIOSLA"
>runIOSLA</A
> :: (s -&gt; a -&gt; IO (s, [b]))</TD
></TR
></TABLE
>}</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AliftSt"
>liftSt</A
> :: <A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s1 b c -&gt; <A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> (s1, s2) b c</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3ArunSt"
>runSt</A
> :: s2 -&gt; <A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> (s1, s2) b c -&gt; <A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s1 b c</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Documentation</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>newtype</SPAN
> <A NAME="t%3AIOSLA"
></A
><B
>IOSLA</B
> s a b</TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
>list arrow combined with a state and the IO monad
</TD
></TR
><TR
><TD CLASS="section4"
>Constructors</TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="5" CELLPADDING="0"
><TR
><TD CLASS="arg"
><A NAME="v%3AIOSLA"
></A
><B
>IOSLA</B
></TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="body" COLSPAN="2"
><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0"
><TR
><TD CLASS="arg"
><A NAME="v%3ArunIOSLA"
></A
><B
>runIOSLA</B
> :: (s -&gt; a -&gt; IO (s, [b]))</TD
><TD CLASS="rdoc"
></TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="section4"
><IMG SRC="minus.gif" CLASS="coll" ONCLICK="toggle(this,'i:IOSLA')" ALT="show/hide"
> Instances</TD
></TR
><TR
><TD CLASS="body"
><DIV ID="i:IOSLA" STYLE="display:block;"
><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A HREF="Control-Arrow-ArrowState.html#t%3AArrowState"
>ArrowState</A
> s (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
>Arrow (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
>ArrowApply (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
>ArrowChoice (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="Text-XML-HXT-Arrow-XmlArrow.html#t%3AArrowDTD"
>ArrowDTD</A
> (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="Control-Arrow-ArrowIO.html#t%3AArrowIO"
>ArrowIO</A
> (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="Control-Arrow-ArrowIO.html#t%3AArrowIOIf"
>ArrowIOIf</A
> (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="Control-Arrow-ArrowIf.html#t%3AArrowIf"
>ArrowIf</A
> (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="Control-Arrow-ArrowList.html#t%3AArrowList"
>ArrowList</A
> (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
>ArrowPlus (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="Control-Arrow-ArrowTree.html#t%3AArrowTree"
>ArrowTree</A
> (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="Text-XML-HXT-Arrow-XmlArrow.html#t%3AArrowXml"
>ArrowXml</A
> (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
><TR
><TD CLASS="decl"
>ArrowZero (<A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s)</TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v%3AliftSt"
></A
><B
>liftSt</B
> :: <A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s1 b c -&gt; <A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> (s1, s2) b c</TD
></TR
><TR
><TD CLASS="doc"
><P
>lift the state of an IOSLA arrow to a state with an additional component.
</P
><P
>This is uesful, when running predefined IO arrows, e.g. for document input,
 in a context with a more complex state component.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v%3ArunSt"
></A
><B
>runSt</B
> :: s2 -&gt; <A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> (s1, s2) b c -&gt; <A HREF="Control-Arrow-IOStateListArrow.html#t%3AIOSLA"
>IOSLA</A
> s1 b c</TD
></TR
><TR
><TD CLASS="doc"
><P
>run an arrow with augmented state in the context of a simple state arrow.
 An initial value for the new state component is needed.
</P
><P
>This is useful, when running an arrow with an extra environment component, e.g.
 for namespace handling in XML.
</P
></TD
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><TD CLASS="s15"
></TD
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><TD CLASS="botbar"
>Produced by <A HREF="http://www.haskell.org/haddock/"
>Haddock</A
> version 0.8</TD
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