From aebffcc1c786e8cea15fff6f324bf71fc37cbb37 Mon Sep 17 00:00:00 2001 From: Mart Lubbers Date: Fri, 24 Apr 2015 09:10:46 +0200 Subject: updated practicum files --- files/practicum/StdMaybeMonad.dcl | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 files/practicum/StdMaybeMonad.dcl (limited to 'files/practicum/StdMaybeMonad.dcl') diff --git a/files/practicum/StdMaybeMonad.dcl b/files/practicum/StdMaybeMonad.dcl new file mode 100644 index 0000000..e9ebec1 --- /dev/null +++ b/files/practicum/StdMaybeMonad.dcl @@ -0,0 +1,9 @@ +definition module StdMaybeMonad + +import StdMonad + +:: Maybe a = Nothing | Just a + +instance return Maybe +instance >>= Maybe +instance fail Maybe -- cgit v1.2.3