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deque-blog/dsl_arithmetic_2_replace_known_vars.hs

Created January 20, 2017 21:23
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dsl_arithmetic_2_replace_known_vars.hs
replaceKnownVars :: Env -> ExprR Expr -> Expr
replaceKnownVars env = go where
go e@(Var v) =
case Map.lookup v env of
Just val -> cst val
Nothing -> Fix e
go e = Fix e
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