doc-src/Tutorial/Misc/Tree.thy
author paulson
Wed, 01 Mar 2000 12:26:28 +0100
changeset 8319 dcf8ae2419db
parent 5377 efb799c5ed3c
permissions -rw-r--r--
added a reference

Tree = Main +
datatype 'a tree = Tip | Node ('a tree) 'a ('a tree)
end