On Sun, Apr 22, 2012 at 11:11:51AM +0200, TP wrote: > Hello, > > I have a module where I have made several types as instances of the Show > typeclass. > > For debugging purpose, I would like to use the default implementation for > Show > (the one obtained when using "deriving", which shows all the constructors). > Is > there some option to do that, or have I to comment all the Show instances of > my code, and add "Show" in "deriving (...)" for each of my types? If this is > the only possibility, is there some script around here to do that > automatically? > > Thanks in advance, > > TP
You could use some preprocessor's #if/#else/#endif pragmas. See here: http://stackoverflow.com/questions/6556778/using-if-else-endif-in-haskell L. -- Lorenzo Bolla http://lbolla.info
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