Hi, On Thu, Oct 9, 2008 at 06:15, Conglun Yao <[EMAIL PROTECTED]> wrote: > Sorry, I can't fully understand the source code, but it seems we can > only define a polymorphic variant with only one additional type > declaration, like > `A of int or `A of (int * int) > rather than `A of int * int
That's correct. > It looks wired, as we can directly define > type t = [ `A of int * int | `B of string ] in toploop or a *.ml file. yes, that's because ocaml handle the "of int * int" a bit differently in regular and polymorphic variant declarations: - in the regular variant the * is a separator between constructor arguments (thus two arguments) - polymorphic variants only have one argument, so int * int is treated as a whole type expression and * is the "tupling" operator So yes, this looks wired in the ocaml parser. -- Olivier _______________________________________________ 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
