[Haskell-cafe] debugtracehelpers Re: traceM and traceShowM

[Thomas Hartman]

I have this and a couple other handy functions in

DebugTraceHelpers:

http://patch-tag.com/r/tphyahoo/DebugTraceHelpers/snapshot/current/content/pretty

hackage:

http://hackage.haskell.org/packages/archive/DebugTraceHelpers/0.12/doc/html/Debug-Trace-Helpers.html


2009/10/16 Martijn van Steenbergen <martijn at van.steenbergen.nl>:
> Hello,
>
> I propose the addition of the following two functions to module Debug.Trace:
>
>> traceM :: Monad m => String -> m ()
>> traceM msg = trace msg (return ())
>>
>> traceShowM :: (Show a, Monad m) => a -> m ()
>> traceShowM = traceM . show
>
> These functions allow tracing in any do-block. I often define them myself; I
> think they are useful in general.
>
> Deadline: 23 October 2009.
>
> Martijn.
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