12 Jan
2014
12 Jan
'14
11:12 p.m.
Hi Bob, You can have a heterogeneous list of items that implement a typeclass if
you have a wrapper that uses ExistentialQuantification. See http://www.haskell.org/haskellwiki/Heterogenous_collections
Hmm.. I'll take a closer look at that. It might be good enough, though I would prefer to be able to pattern match on the elements in the list. Regards, Luke