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author | Mart Lubbers | 2015-04-24 14:35:17 +0200 |
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committer | Mart Lubbers | 2015-04-24 14:35:17 +0200 |
commit | a067356625105f50978443d3b0a0a5d8f6391184 (patch) | |
tree | d194d49f36232b8e5860ca557c75f11a3ac05afe /fp2/week2/mart/StdMaybeMonad.dcl | |
parent | updated practicum files (diff) |
rare shit
Diffstat (limited to 'fp2/week2/mart/StdMaybeMonad.dcl')
-rw-r--r-- | fp2/week2/mart/StdMaybeMonad.dcl | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fp2/week2/mart/StdMaybeMonad.dcl b/fp2/week2/mart/StdMaybeMonad.dcl new file mode 100644 index 0000000..e9ebec1 --- /dev/null +++ b/fp2/week2/mart/StdMaybeMonad.dcl @@ -0,0 +1,9 @@ +definition module StdMaybeMonad
+
+import StdMonad
+
+:: Maybe a = Nothing | Just a
+
+instance return Maybe
+instance >>= Maybe
+instance fail Maybe
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