[Haskell-cafe] Using multiplate to get free variables from a syntax tree
matt at softmechanics.net
Thu Feb 23 22:18:22 CET 2012
I'm reading the haskellwiki article on multiplate. Is it possible to
modify the getVariablesPlate example to return the free variables?
One idea I had is to store an environment in a reader monad, and use
local to update the environment at a let expression. Couldn't figure
it out, though. Any ideas?
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