From: Jacques Le Normand <rathereasy@gmail.com>
To: caml-list caml-list <caml-list@yquem.inria.fr>
Subject: A copy/paste buffer
Date: Fri, 26 Jun 2009 01:44:24 -0400 [thread overview]
Message-ID: <f74178430906252244p2cd98854nb2395f7c438be2a8@mail.gmail.com> (raw)
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Hello caml-list,
I want to implement a copy/paste buffer for arbitrary polymorphic variants.
Is the following code safe?
"
let buffer : 'a = Obj.magic (ref None)
let _ = buffer := Some `Foo
let _ = buffer := Some `Bar
let _ =
match !buffer with
Some (`Bar x) -> print_endline "matches"
| _ -> ()
"
also, how would I refine the buffer type a little more? Every time I try, I
run into the value restriction
cheers
--Jacques L.
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reply other threads:[~2009-06-26 5:44 UTC|newest]
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