On 11/16/10 03:51, Gabriel Kerneis wrote: > On Tue, Nov 16, 2010 at 12:43:30PM +0100, Thomas Gazagnaire wrote: >> You are not forced to use match expression, you can just define : >> let is_none x = match x with None -> true | Some _ -> false >> and is_some x = not (is_none x) >> and then use these functions in your code ... > > Or even simpler: > let is_none = (=) None > let is_some = (!=) None > Note that you can use this directly, for instance: > List.filter ((!=) None) l
I would like to add that I also follow this general approach consisting in defining such trivial functions where I need them. Being trivial does not mean that they are going to be used everywhere. It makes the code easier to *read*. My 2 cents. Martin _______________________________________________ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
