Mercurial > urweb
view demo/list.ur @ 2000:bddee3af70c4
Tweaking uw_commit() logic, partly to fix a resource clean-up bug on SQL serialization failures
author | Adam Chlipala <adam@chlipala.net> |
---|---|
date | Tue, 15 Apr 2014 19:12:49 -0400 |
parents | 669ac5e9a69e |
children |
line wrap: on
line source
datatype list t = Nil | Cons of t * list t fun length [t] (ls : list t) = let fun length' (ls : list t) (acc : int) = case ls of Nil => acc | Cons (_, ls') => length' ls' (acc + 1) in length' ls 0 end fun rev [t] (ls : list t) = let fun rev' (ls : list t) (acc : list t) = case ls of Nil => acc | Cons (x, ls') => rev' ls' (Cons (x, acc)) in rev' ls Nil end