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From: ben kuin <benkuin@gmail.com>
To: caml-list@inria.fr
Subject: from if...else to pattern matching
Date: Sat, 2 Oct 2010 16:04:31 +0200	[thread overview]
Message-ID: <AANLkTinpu++qk2A3UYJ-t+==bbmb-CWikmPMTATjasKi@mail.gmail.com> (raw)

hi
I try to transform an if-else clause into pattern matching, I think
I've tried a lot of approaches, but apperently I'm doing something
fundemently wrong.


~~~~~~~~~
(** Define behaviors against a constang   'x =< c' with if...else and
pattern matching.
I want to see how to match a value against funtion **)

(* defining a  '=<' operator *)
let (=<) a b = if a < b then true else if a == b then true else false;;

let if_test c  =
if ( 4 =< c )then
  true
else
  false
;;

(* and now use the operator in pattern matching * )
let match_test c =
  match  ( _ =< c ) (* pseudocode *)
    | 4 -> true
    | _ -> false
;;
~~~~~~~~~~~~~~~~~~~~~~~~~~~


thanks in advance
ben


             reply	other threads:[~2010-10-02 14:04 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-02 14:04 ben kuin [this message]
2010-10-02 14:22 ` [Caml-list] " Philip
2010-10-02 14:47   ` ben kuin
2010-10-02 16:09     ` Hezekiah M. Carty
2010-10-02 17:54 ` Jon Harrop

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