Actually, I may be quite wrong with the task. While duplexing the input is an interesting thing to do, actually I need to pipeline output of one consumer to another (outputting text after making some internal representation - with Show instance - with the parseData). The answer to this one should be easy, but I still do not see it.<br>
<br><div class="gmail_quote">On 19 April 2011 20:10, Paul Sujkov <span dir="ltr">&lt;<a href="mailto:psujkov@gmail.com">psujkov@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi haskellers,<div><br></div><div>I played a bit with the enumerator package, and I&#39;m quite stuck with the question how to duplex data to two (or more) consumers using combinators from xml-enumerator (for example) package. What I mean is:</div>

<div><br></div><div><div>main = withFile &quot;out.xml&quot; WriteMode $ \h -&gt;</div><div>       parseFile &quot;in.xml&quot; decodeEntities $ </div><div>       (joinI $ renderText $$ iterHandle h) &gt;&gt; (force &quot;data required&quot; parseData)</div>

<div><br></div><div>where parseData is a simple xml-enumerator parser. Combining consumers in such a way I can get text being output to the file &quot;out.xml&quot; (like in the example given) or parsed with parseData (if I switch the order of the consumers), but not both. Can anybody tell me how to make a pipe (input -&gt; process -&gt; output) to have text both parsed and then put back to the file? While pretty straightforward with the arrow approach, it doesn&#39;t seem obvious to me with the iteratees :(</div>

<br>-- <br>Regards, Paul Sujkov<br>
</div>
</blockquote></div><br><br clear="all"><br>-- <br>Regards, Paul Sujkov<br>