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deque-blog/dsl_arithmetic_1_expr.hs

Created January 15, 2017 16:56
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dsl_arithmetic_1_expr.hs
type Id = String
data OpType = Add | Mul deriving (Show, Eq, Ord)
data Expr
= Cst Int
| Var Id
| Op OpType [Expr]
deriving (Show, Eq, Ord)
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