From: Jay Riddle <jcriddle4@home.com>
To: caml-list@inria.fr
Subject: [Caml-list] Mapping onto lists
Date: Wed, 18 Jul 2001 08:00:03 -0600 [thread overview]
Message-ID: <3B559663.14707D73@home.com> (raw)
Is there any way to combine these two functions(map and my_map) so
that the following will work?
let plus x y = x + y;;
let rec map f = function
[] -> []
| head::tail -> let r = f head in r :: map f tail;;
map (plus 2) [10; 100; 100];;
- : int list = [12; 102; 1002]
let rec my_map f = function
[] -> []
| head::tail -> let r = head f in r :: my_map f tail;;
my_map 10 [plus 2; plus 4; plus 7];;
- : int list = [12; 14; 17]
(* Combined mapping function *)
combined_map 2 [plus 10; plus 100; plus 1000];;
combined_map (plus 2) [10; 100; 100];;
--JayR x8-1335
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next reply other threads:[~2001-07-18 13:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-18 14:00 Jay Riddle [this message]
2001-07-18 16:11 ` Frank Atanassow
2001-07-18 16:44 ` Jun Furuse
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