[Haskell-cafe] Reformatter for Show

Alexey Khudyakov alexey.skladnoy at gmail.com
Tue May 3 00:05:37 CEST 2011


On 03.05.2011 00:43, Antoine Latter wrote:
> On Mon, May 2, 2011 at 3:01 PM, Alexey Khudyakov
> <alexey.skladnoy at gmail.com>  wrote:
>> Hello everyone!
>>
>> Haskell have nice automatically derivable Show type class. It's quite useful
>> for debugging with one exception. String representation of even moderately
>> large value is completely unreadable (example below).
>>
>> My question is there any tool for reformatting result of show so it could be
>> read by human beings?
>>
>>
>
> You could use the 'groom' package on Hackage:
>
> http://hackage.haskell.org/package/groom
>
> It works best for the derived show instances.
>
> Antoine
>

 > http://hackage.haskell.org/package/pretty-show
 >
 > Just use ppShow, instead of show.
 >
 > Hope this helps,
 > Ozgur

Thanks a lot. It's exactly what I looked for. Both packages do they jobs



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