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| author | Eugen Wissner <belka@caraus.de> | 2025-12-09 16:32:32 +0100 |
|---|---|---|
| committer | Eugen Wissner <belka@caraus.de> | 2025-12-09 16:32:32 +0100 |
| commit | 3624c712d72d246f21d4e710cec7c11e052e0326 (patch) | |
| tree | f385cb51c72a0c5eeb2057609b75f5f8c6c4f272 /Haskell-book/11/Hutton.hs | |
| parent | c95abc31d62e296db4f1b537e3de440dd40defd1 (diff) | |
| download | book-exercises-3624c712d72d246f21d4e710cec7c11e052e0326.tar.gz | |
Add the haskell book
Diffstat (limited to 'Haskell-book/11/Hutton.hs')
| -rw-r--r-- | Haskell-book/11/Hutton.hs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Haskell-book/11/Hutton.hs b/Haskell-book/11/Hutton.hs new file mode 100644 index 0000000..539ba65 --- /dev/null +++ b/Haskell-book/11/Hutton.hs @@ -0,0 +1,13 @@ +module Hutton where + +data Expr + = Lit Integer + | Add Expr Expr + +eval :: Expr -> Integer +eval (Lit x) = x +eval (Add x y) = (eval x) + (eval y) + +printExpr :: Expr -> String +printExpr (Lit x) = show x +printExpr (Add x y) = (printExpr x) ++ " + " ++ (printExpr y) |