Thanks all for the responses. I managed to put them all together and I [got it all to work]( https://github.com/AmpersandTarski/Ampersand/blob/cefbc08ad8fb3152ce1a55dce5... ). Cheers, Han. Op za 12 jun. 2021 om 13:28 schreef Henning Thielemann < lemming@henning-thielemann.de>:
On Sat, 12 Jun 2021, Han Joosten wrote:
Thanks for this respons, Rubén. I might not have explained what I am looking for very well. I already have instance Arbitrary Foo That is not the problem. The problem is, that when a counterexample is found, it is dumped to the output with the `show` function. I would like to be able to use another function for that, say show'. In order to do so, I need to obtain the counterexample itself in some way, so I can use it to generate a useful message after the tests are done.
https://hackage.haskell.org/package/QuickCheck-2.14.2/docs/Test-QuickCheck.h...