traceM and traceShowM
Martijn van Steenbergen
martijn at van.steenbergen.nl
Thu Nov 5 07:25:13 EST 2009
Simon Marlow wrote:
> On 16/10/2009 14:22, Martijn van Steenbergen wrote:
>> I propose the addition of the following two functions to module
>>> traceM :: Monad m => String -> m ()
>>> traceM msg = trace msg (return ())
>>> traceShowM :: (Show a, Monad m) => a -> m ()
>>> traceShowM = traceM . show
> is traceShowM really necessary? It doesn't save many characters, and
> fails the "don't name a composition" test.
No, it's not necessary at all.
There's a bit of tension between not wanting to name a composition and
being consistent with the rest of the module: traceM and traceShowM
mirror the existing trace and traceShow functions.
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