Re: Querying the instances a data type implements

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I got the link from the Template Haskell Wiki page.

It is possible that I might have time to work on the feature myself. I don'=
t
it, but if that is the case I will let you know.

-Jonathan

On Mon, Jan 18, 2010 at 1:55 AM, Simon Peyton-Jones
<[email protected]>wrote:

>  All: as Robert says, I keep meaning to close the template-haskell list
> altogether; but I am not sure how to do so.
>
>
>
> Jonathan: where did you find a pointer to the mailing list?  I should
> remove those too.
>
>
>
> Returning to the question, sadly there=92s no way to do what you want rig=
ht
> now.  There=92s an open feature request:
>
>  http://hackage.haskell.org/trac/ghc/ticket/1835
>
> Would anyone like to undertake it?  It=92s not hard.
>
>
>
> Simon
>
>
>
> *From:* [email protected] [mailto:
> [email protected]] *On Behalf Of *
> [email protected]
> *Sent:* 17 January 2010 23:42
> *To:* [email protected]
> *Subject:* [Template-haskell] Querying the instances a data type
> implements
>
>
>
> Hi,
>
> I am trying query the instances that a data type implements. Calling reif=
y
> on the data type doesn't appear to return anything relating to type class=
es.
>
>
> I am very new to Template Haskell, so I apologize if there is a easy way =
to
> do this that I missed.
>
> -Jonathan
>

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I got the link from the Template Haskell Wiki page.=A0<div><br></div><div>I=
t is possible that I might have time to work on the feature myself. I don&#=
39;t it, but if that is the case I will let you know.</div><div><br></div>
<div>-Jonathan<br><br><div class=3D"gmail_quote">On Mon, Jan 18, 2010 at 1:=
55 AM, Simon Peyton-Jones <span dir=3D"ltr">&lt;<a href=3D"mailto:simonpj@m=
icrosoft.com">[email protected]</a>&gt;</span> wrote:<br><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex;">









<div lang=3D"EN-GB" link=3D"blue" vlink=3D"purple">

<div>

<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">All: =
as Robert says, I keep meaning to close the template-haskell
list altogether; but I am not sure how to do so.=A0 </span></p>

<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">=A0</=
span></p>

<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">Jonat=
han: where did you find a pointer to the mailing list?=A0 I
should remove those too.</span></p>

<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">=A0</=
span></p>

<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">Retur=
ning to the question, sadly there=92s no way to do what you
want right now.=A0 There=92s an open feature request:</span></p>

<p class=3D"MsoNormal" style=3D"text-indent:5.25pt"><span style=3D"font-siz=
e:11.0pt;color:#1F497D">=A0<a href=3D"http://hackage.haskell.org/trac/ghc/t=
icket/1835" target=3D"_blank">http://hackage.haskell.org/trac/ghc/ticket/18=
35</a></span></p>


<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">Would=
 anyone like to undertake it?=A0 It=92s not hard.</span></p>

<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">=A0</=
span></p>

<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">Simon=
</span></p>

<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;color:#1F497D">=A0</=
span></p>

<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">

<div>

<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">

<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt">F=
rom:</span></b><span lang=3D"EN-US" style=3D"font-size:10.0pt"> <a href=3D"=
mailto:[email protected]" target=3D"_blank">template-has=
[email protected]</a>
[mailto:<a href=3D"mailto:[email protected]" target=3D"_=
blank">[email protected]</a>] <b>On Behalf Of </b><a hre=
f=3D"mailto:[email protected]" target=3D"_blank">jonathanGfischof=
[email protected]</a><br>

<b>Sent:</b> 17 January 2010 23:42<br>
<b>To:</b> <a href=3D"mailto:[email protected]" target=3D"_blank=
">[email protected]</a><br>
<b>Subject:</b> [Template-haskell] Querying the instances a data type
implements</span></p>

</div>

</div><div><div></div><div class=3D"h5">

<p class=3D"MsoNormal">=A0</p>

<p class=3D"MsoNormal">Hi, <br>
<br>
I am trying query the instances that a data type implements. Calling reify =
on
the data type doesn&#39;t appear to return anything relating to type classe=
s. <br>
<br>
I am very new to Template Haskell, so I apologize if there is a easy way to=
 do
this that I missed.<br>
<br>
-Jonathan</p>

</div></div></div>

</div>

</div>


</blockquote></div><br></div>

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