From: Radu Grigore <radugrigore@gmail.com>
To: Jon Harrop <jon@jdh30.plus.com>
Cc: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] C++ STL and template features compared with OCaml parametric polymorphism and OO features
Date: Mon, 27 Sep 2004 16:32:18 +0300 [thread overview]
Message-ID: <7f8e92aa040927063254825e34@mail.gmail.com> (raw)
In-Reply-To: <200409271411.30384.jon@jdh30.plus.com>
On Mon, 27 Sep 2004 14:11:30 +0100, Jon Harrop <jon@jdh30.plus.com> wrote:
> > For the writter of the function there is a big difference, especially
> > if it has to write the specialized versions.
>
> The equivalent to the writer of fold is the writer of an iterator. You have to
> write specialized versions for each type of iterator just as you would have
> to write your own fold.
That's why I said iterators are another level of abstraction. The
difference is that after you write the iterators code for a new
sequence-like data structure all the "generic" functions, not only
fold but also map and others, will automagically work on them. The
simplest form of an "iterator" is implementing a "next" function for
all sequences (although in this situation it is more of an
"enumeration").
regards,
radu
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next prev parent reply other threads:[~2004-09-27 13:32 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-25 21:12 Vasili Galchin
2004-09-25 21:38 ` Nicolas Cannasse
2004-09-25 22:15 ` Vasili Galchin
2004-09-25 22:52 ` Vasili Galchin
2004-09-26 1:34 ` Jon Harrop
2004-09-26 5:31 ` Radu Grigore
2004-09-26 9:47 ` sejourne_kevin
2004-09-26 13:05 ` Jon Harrop
2004-09-26 14:36 ` skaller
2004-09-26 15:08 ` sejourne_kevin
2004-09-26 15:27 ` skaller
2004-09-26 18:51 ` Jon Harrop
2004-09-26 20:14 ` Radu Grigore
2004-09-27 1:59 ` Jon Harrop
2004-09-27 4:48 ` skaller
2004-09-27 9:40 ` Jacques GARRIGUE
2004-09-27 10:50 ` Radu Grigore
2004-09-27 12:14 ` skaller
2004-09-27 13:11 ` Jon Harrop
2004-09-27 13:31 ` Radu Grigore
2004-09-27 16:54 ` Jon Harrop
2004-09-29 18:59 ` Radu Grigore
2004-09-27 13:32 ` Radu Grigore [this message]
2004-09-27 14:04 ` Brian Hurt
2004-09-27 14:58 ` skaller
2004-09-27 15:30 ` Brian Hurt
2004-09-27 16:38 ` skaller
2004-09-27 17:01 ` Brian Hurt
2004-09-28 1:21 ` skaller
2004-09-27 16:41 ` brogoff
2004-09-28 0:26 ` skaller
2004-09-29 15:32 ` Florian Hars
2004-09-29 16:49 ` [Caml-list] Factoring HOFs [was Re: C++ STL...] Jon Harrop
2004-09-30 9:19 ` Radu Grigore
2004-09-30 10:13 ` Keith Wansbrough
2004-09-30 10:31 ` Keith Wansbrough
2004-09-30 13:21 ` skaller
2004-09-30 23:17 ` [Caml-list] Factoring HOFs Jacques Garrigue
2004-10-01 8:46 ` Keith Wansbrough
2004-10-01 17:35 ` brogoff
2004-09-26 20:43 ` [Caml-list] C++ STL and template features compared with OCaml parametric polymorphism and OO features skaller
2004-09-26 14:19 ` skaller
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