doc-src/Tutorial/Misc/Tree.thy
author wenzelm
Sat, 24 Nov 2001 17:21:47 +0100
changeset 12294 2ef49890aede
parent 5377 efb799c5ed3c
permissions -rw-r--r--
fixed SML/NJ error (!?);

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