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From: David Baelde <david.baelde@gmail.com>
To: Martin Koch <mak@issuu.com>
Cc: Mihamina Rakotomandimby <mihamina@rktmb.org>, caml-list@inria.fr
Subject: Re: [Caml-list] polymorphism in general
Date: Tue, 27 Dec 2011 08:44:40 +0100	[thread overview]
Message-ID: <CAFqqUFEuyTFnvM4DLZX1ZiQje+bRMp=Fyag7o6aSVpBtGT2K4g@mail.gmail.com> (raw)
In-Reply-To: <CACyk+CLz1SUo9QqAK+3id2A7J9VyR=aWBaAnZXFLiiYNPbdK8Q@mail.gmail.com>

Hi,

I would say that any value whose type contains a generalized type
variable ('a, 'b, etc.) is polymorphic.

The empty list (of type 'a list) is polymorphic:
  let empty = [] in (1::empty, "2"::empty)

And so is the function always returning the empty list, even though it
has no polymorphic argument:
  let empty () = []

My 2 cents,
-- 
David

      reply	other threads:[~2011-12-27  7:45 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-23  8:30 Mihamina Rakotomandimby
2011-12-23 10:07 ` Martin Koch
2011-12-27  7:44   ` David Baelde [this message]

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