Mercurial > urweb
view demo/list.ur @ 2279:32a407902d3b
Rewrite LRU cache. Now uses one big hash table and is less buggy.
author | Ziv Scully <ziv@mit.edu> |
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date | Wed, 11 Nov 2015 20:01:48 -0500 |
parents | 669ac5e9a69e |
children |
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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