Re: [Haskell-cafe] Type classes, collections, sum types, closures, and a massive headache

[Bob Hutchison]

for your convenience, the correct link: 
https://lukepalmer.wordpress.com/2010/01/24/haskell-antipattern-existential-typeclass/
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe