Define a custom element generator, which has characters with your
desired values:
myRange :: Gen Char
myRange = elements (['A'..'Z'] ++ ['a' .. 'z'] ++ " ~!@#$%^&*()")
You can use "forAll" to run tests with a specific generator:
forAll myRange $ \c -> chr (ord c) == c
On Mon, Aug 30, 2010 at 08:12, Sebastian Höhn
Hello,
perhaps I am just blind or is it a difficult issue: I would like to generate Char values in a given Range for QuickCheck2. There is this simple example from the haskell book:
instance Arbitrary Char where arbitrary = elements (['A'..'Z'] ++ ['a' .. 'z'] ++ " ~!@#$%^&*()")
This does not work in QuickCheck2 since the instance is already defined. How do I achieve this behaviour in QC2?
Thanks for helping.
Sebastian _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe