diff options
Diffstat (limited to 'src/algebra/tree.spad.pamphlet')
| -rw-r--r-- | src/algebra/tree.spad.pamphlet | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/src/algebra/tree.spad.pamphlet b/src/algebra/tree.spad.pamphlet index be99d1f7..5a56673f 100644 --- a/src/algebra/tree.spad.pamphlet +++ b/src/algebra/tree.spad.pamphlet @@ -55,10 +55,6 @@ Tree(S: SetCategory): T==C where cycleTreeMax ==> 5 Rep := Union(node:Record(value: S, args: List %),empty:"empty") - t:% - br:% - s: S - ls: List S empty? t == t case empty empty() == ["empty"] children t == @@ -89,8 +85,8 @@ Tree(S: SetCategory): T==C where for c in children t repeat map!(fn, c) t tree(s,lt) == [[s,lt]] - tree(s) == [[s,[]]] - tree(ls) == + tree(s: S) == [[s,[]]] + tree(ls: List S) == empty? ls => empty() tree(first ls, [tree s for s in rest ls]) value t == |