[core libraries] Re: Proposal: Debug.Trace.traceWith

Joachim Breitner mail at joachim-breitner.de
Sat Feb 10 19:40:00 UTC 2018


Am Freitag, den 09.02.2018, 22:07 -0500 schrieb David Feuer:
> Other another bike-shed color:
> traceWith :: (a -> String) -> a -> a
> traceShowWith :: Show b => (a -> b) -> a -> a
> traceShowWith f = traceWith (show . f)

so many bike-shed colors! Maybe an indication that not all of them are
needed, but we should rather be better at pointing to useful, concice
and non-obvoius idioms?

> But on the other hand, pointfree.io tells me that you can write
> trace =<< f
> trace =<< show . f
> so I'm not sure how urgent these are.

Nifty! If we add this prominently to the docs in Data.Trace, wouldn’t
that suit us better?


Joachim Breitner
  mail at joachim-breitner.de
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