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haskell-hxt-8.3.2-1mdv2010.1.x86_64.rpm

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>Control.Arrow.ArrowIO</TITLE
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>hxt-8.3.2: A collection of tools for processing XML with Haskell.</TD
><TD CLASS="topbut"
><A HREF="index.html"
>Contents</A
></TD
><TD CLASS="topbut"
><A HREF="doc-index.html"
>Index</A
></TD
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><TD CLASS="modulebar"
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><FONT SIZE="6"
>Control.Arrow.ArrowIO</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: ArrowIO.hs,v 1.6 2005<EM
>09</EM
>02 17:09:39 hxml Exp $
</P
><P
>Lifting of IO actions to arrows
</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"
>class</SPAN
> <A HREF="/usr/share/doc/ghc/libraries/base/Control-Arrow.html#t%3AArrow"
>Arrow</A
> a =&gt; <A HREF="#t%3AArrowIO"
>ArrowIO</A
> a  <SPAN CLASS="keyword"
>where</SPAN
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A HREF="#v%3AarrIO"
>arrIO</A
> ::  (b -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c) -&gt; a b c</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AarrIO0"
>arrIO0</A
> ::  <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c -&gt; a b c</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AarrIO2"
>arrIO2</A
> ::  (b1 -&gt; b2 -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c) -&gt; a (b1, b2) c</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AarrIO3"
>arrIO3</A
> ::  (b1 -&gt; b2 -&gt; b3 -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c) -&gt; a (b1, (b2, b3)) c</TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AarrIO4"
>arrIO4</A
> ::  (b1 -&gt; b2 -&gt; b3 -&gt; b4 -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c) -&gt; a (b1, (b2, (b3, b4))) c</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>class</SPAN
> (<A HREF="/usr/share/doc/ghc/libraries/base/Control-Arrow.html#t%3AArrow"
>Arrow</A
> a, <A HREF="Control-Arrow-ArrowIO.html#t%3AArrowIO"
>ArrowIO</A
> a) =&gt; <A HREF="#t%3AArrowIOIf"
>ArrowIOIf</A
> a  <SPAN CLASS="keyword"
>where</SPAN
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A HREF="#v%3AisIOA"
>isIOA</A
> ::  (b -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="/usr/share/doc/ghc/libraries/ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
>) -&gt; a b b</TD
></TR
></TABLE
></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"
>class</SPAN
> <A HREF="/usr/share/doc/ghc/libraries/base/Control-Arrow.html#t%3AArrow"
>Arrow</A
> a =&gt; <A NAME="t:ArrowIO"
><A NAME="t%3AArrowIO"
></A
></A
><B
>ArrowIO</B
> a  <SPAN CLASS="keyword"
>where</SPAN
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
>the interface for converting an IO action into an arrow
</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="section4"
>Methods</TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A NAME="v:arrIO"
><A NAME="v%3AarrIO"
></A
></A
><B
>arrIO</B
> ::  (b -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c) -&gt; a b c</TD
></TR
><TR
><TD CLASS="doc"
>construct an arrow from an IO action
</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:arrIO0"
><A NAME="v%3AarrIO0"
></A
></A
><B
>arrIO0</B
> ::  <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c -&gt; a b c</TD
></TR
><TR
><TD CLASS="doc"
>construct an arrow from an IO action without any parameter
</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:arrIO2"
><A NAME="v%3AarrIO2"
></A
></A
><B
>arrIO2</B
> ::  (b1 -&gt; b2 -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c) -&gt; a (b1, b2) c</TD
></TR
><TR
><TD CLASS="doc"
>construction of a 2 argument arrow from a binary IO action
 |
 | example: <TT
> a1 &amp;&amp;&amp; a2 &gt;&gt;&gt; arr2 f </TT
>
</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:arrIO3"
><A NAME="v%3AarrIO3"
></A
></A
><B
>arrIO3</B
> ::  (b1 -&gt; b2 -&gt; b3 -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c) -&gt; a (b1, (b2, b3)) c</TD
></TR
><TR
><TD CLASS="doc"
>construction of a 3 argument arrow from a 3-ary IO action
 |
 | example: <TT
> a1 &amp;&amp;&amp; a2 &amp;&amp;&amp; a3 &gt;&gt;&gt; arr3 f </TT
>
</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:arrIO4"
><A NAME="v%3AarrIO4"
></A
></A
><B
>arrIO4</B
> ::  (b1 -&gt; b2 -&gt; b3 -&gt; b4 -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> c) -&gt; a (b1, (b2, (b3, b4))) c</TD
></TR
><TR
><TD CLASS="doc"
>construction of a 4 argument arrow from a 4-ary IO action
 |
 | example: <TT
> a1 &amp;&amp;&amp; a2 &amp;&amp;&amp; a3 &amp;&amp;&amp; a4 &gt;&gt;&gt; arr4 f </TT
>
</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="section4"
><IMG SRC="minus.gif" CLASS="coll" ONCLICK="toggle(this,'i:ArrowIO')" ALT="show/hide"
> Instances</TD
></TR
><TR
><TD CLASS="body"
><DIV ID="i:ArrowIO" STYLE="display:block;"
><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A HREF="Control-Arrow-ArrowIO.html#t%3AArrowIO"
>ArrowIO</A
> <A HREF="Control-Arrow-IOListArrow.html#t%3AIOLA"
>IOLA</A
></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
></TABLE
></DIV
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>class</SPAN
> (<A HREF="/usr/share/doc/ghc/libraries/base/Control-Arrow.html#t%3AArrow"
>Arrow</A
> a, <A HREF="Control-Arrow-ArrowIO.html#t%3AArrowIO"
>ArrowIO</A
> a) =&gt; <A NAME="t:ArrowIOIf"
><A NAME="t%3AArrowIOIf"
></A
></A
><B
>ArrowIOIf</B
> a  <SPAN CLASS="keyword"
>where</SPAN
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
>the interface for converting an IO predicate into a list arrow
</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="section4"
>Methods</TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A NAME="v:isIOA"
><A NAME="v%3AisIOA"
></A
></A
><B
>isIOA</B
> ::  (b -&gt; <A HREF="/usr/share/doc/ghc/libraries/base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="/usr/share/doc/ghc/libraries/ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
>) -&gt; a b b</TD
></TR
><TR
><TD CLASS="doc"
><P
>builds an arrow from an IO predicate
</P
><P
>if the predicate holds, the single list containing the input is returned, else the empty list,
 similar to Control.Arrow.ArrowList.isA
</P
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="section4"
><IMG SRC="minus.gif" CLASS="coll" ONCLICK="toggle(this,'i:ArrowIOIf')" ALT="show/hide"
> Instances</TD
></TR
><TR
><TD CLASS="body"
><DIV ID="i:ArrowIOIf" STYLE="display:block;"
><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A HREF="Control-Arrow-ArrowIO.html#t%3AArrowIOIf"
>ArrowIOIf</A
> <A HREF="Control-Arrow-IOListArrow.html#t%3AIOLA"
>IOLA</A
></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
></TABLE
></DIV
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
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><TD CLASS="botbar"
>Produced by <A HREF="http://www.haskell.org/haddock/"
>Haddock</A
> version 2.5.0</TD
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