Copyright | (C) 2015 The University of Kansas |
---|---|
License | BSD-style (see the file LICENSE) |
Maintainer | Andy Gill |
Stability | Experimental |
Safe Haskell | Trustworthy |
Language | Haskell2010 |
GHC RULE for Natural Transformation
RULES "natural free theorem" [~] forall h (r :: (Functor f, Functor g, Transformation f g t) => t) . fmap h . (r #) = (r #) . fmap h