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| author | Yale AI Dept <ai@nebula.cs.yale.edu> | 1993-07-14 13:08:00 -0500 |
|---|---|---|
| committer | Duncan McGreggor <duncan.mcgreggor@rackspace.com> | 1993-07-14 13:08:00 -0500 |
| commit | 4e987026148fe65c323afbc93cd560c07bf06b3f (patch) | |
| tree | 26ae54177389edcbe453d25a00c38c2774e8b7d4 /progs/lib/cl/maybe.hs | |
Import to github.
Diffstat (limited to 'progs/lib/cl/maybe.hs')
| -rw-r--r-- | progs/lib/cl/maybe.hs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/progs/lib/cl/maybe.hs b/progs/lib/cl/maybe.hs new file mode 100644 index 0000000..8ce01e5 --- /dev/null +++ b/progs/lib/cl/maybe.hs @@ -0,0 +1,12 @@ +-- maybe.hs -- "maybe" type +-- +-- author : Sandra Loosemore +-- date : 22 June 1993 +-- + +module Maybe where + +data Maybe a = Some a | Null + +{-# ImportLispType (Maybe(Some("identity", "identity", "identity"), + Null("not", "'#f"))) #-} |