[Haskell-cafe] Altering Class hierarchy

Stephen Tetley stephen.tetley at gmail.com
Thu Jan 9 18:52:55 UTC 2014

The Functor-Applicative-Monad hierarchy change has been a difficult
change _because_ Functor and Monad are primary parts to the Prelude
(standard library). Individual projects don't change the standard
library, so changing a class hierarchy is no more problematic than any
other substantial / breaking change to a code base.

Best wishes


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