From: Aaron Bohannon <bohannon@cis.upenn.edu>
To: Jon Harrop <jon@jdh30.plus.com>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] String to list to string
Date: Mon, 14 Feb 2005 20:16:51 -0500 [thread overview]
Message-ID: <42114D83.5000905@cis.upenn.edu> (raw)
In-Reply-To: <200502100341.46451.jon@jdh30.plus.com>
Sorry to revive an old thread, but I have to add my $.02 here.
Jon Harrop wrote:
> Outrageously, the core library fails to provide an arbitrary number of
> arbitrary functions. This exact question came up recently. The answer was
> essentially: Why string -> char list and not string -> char array? Why string
> -> char list and not string -> string list? And so on.
Instead of adding one of these functions, I would much rather see a
"fold" function on strings in the String module. The Array module has
both "iter" and "fold" functions. Why, then, would the String module
provide an "iter" but no "fold"--in a functional language?? The
addition of a fold function would very often eliminate the need to
convert a string to a char list or to introduce imperative-style
programming into an otherwise purely functional section of code (not to
mention that writing "char_list_of_string" would become trivial if it
ever were necessary to do so).
I acknowledge the fact that I can write my own fold function, but I just
wanted to point out that this seems to be the most logical addition to
the String module.
Aaron
--
Aaron Bohannon
http://www.cis.upenn.edu/~bohannon/
next prev parent reply other threads:[~2005-02-15 1:17 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-07 2:24 Fwd: Re: [Caml-list] The boon of static type checking Jon Harrop
2005-02-07 2:55 ` skaller
2005-02-10 2:10 ` String to list to string Juancarlo Añez
2005-02-10 2:27 ` [Caml-list] " William D.Neumann
2005-02-10 3:24 ` Erik de Castro Lopo
2005-02-10 6:31 ` Radu Grigore
2005-02-10 6:52 ` Erik de Castro Lopo
2005-02-10 3:41 ` Jon Harrop
2005-02-15 1:16 ` Aaron Bohannon [this message]
2005-02-15 10:33 ` Richard Jones
2005-02-15 13:34 ` Eric C. Cooper
2005-02-10 10:09 ` Richard Jones
2005-02-10 19:19 ` Juancarlo Añez
[not found] ` <E1CzJqb-00031c-00@furbychan.cocan.org>
2005-02-10 19:41 ` Richard Jones
2005-02-10 17:58 ` brogoff
2005-02-10 18:35 Harrison, John R
2005-02-10 19:28 ` Jon Harrop
2005-02-11 1:22 ` skaller
2005-02-11 2:05 ` John Prevost
2005-02-10 19:32 ` brogoff
2005-02-10 19:51 Harrison, John R
2005-02-10 21:18 Harrison, John R
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