1 files changed, 18 insertions, 0 deletions
diff --git a/files/practicum/GenTree.dcl b/files/practicum/GenTree.dcl
new file mode 100644
index 0000000..a18a272
--- /dev/null
+++ b/files/practicum/GenTree.dcl
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+definition module GenTree
+
+import StdClass
+
+::  GenTree a b  = Node a [GenTree a b] | Leaf b
+
+::  Either  a b  = This a | That b
+
+root         ::   (GenTree a b) -> Either a b
+trees        ::   (GenTree a b) -> [GenTree a b]
+
+isNodeMember :: a (GenTree a b) -> Bool | Eq a
+isLeafMember :: b (GenTree a b) -> Bool | Eq b
+allNodes     ::   (GenTree a b) -> [a]
+allLeaves    ::   (GenTree a b) -> [b]
+allMembers   ::   (GenTree a a) -> [a]
+
+map2         :: (a -> c,b -> d) (GenTree a b) -> GenTree c d