From: skaller <skaller@users.sourceforge.net>
To: Jon Harrop <jon@jdh30.plus.com>
Cc: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Functional arrays
Date: 01 Aug 2004 04:45:58 +1000 [thread overview]
Message-ID: <1091299557.11540.405.camel@pelican.wigram> (raw)
In-Reply-To: <200407311823.40820.jon@jdh30.plus.com>
On Sun, 2004-08-01 at 03:23, Jon Harrop wrote:
> On Saturday 31 July 2004 17:35, skaller wrote:
> > On Sat, 2004-07-31 at 23:44, Jon Harrop wrote:
> > > Incidentally, does anyone have a functional array implementation (which
> > > doesn't suck ;-)?
> >
> > Map?
>
> Well, by "array" I mean a container with O(1) random access where "n" is the
> number of elements already in the container. ;-)
> Anyway, I'm considering implementing arrays which look functional but which
> use built-in arrays and keep track of "derived" arrays (e.g. subarrays)
Ugg :)
How about a tree of buckets?
This limits copying on modification to one bucket.
When it gets big, you increase the bucket size so
the tree part doesn't grow too much, so you could
amortize the performance between O(1) and O(log n).
--
John Skaller, mailto:skaller@users.sf.net
voice: 061-2-9660-0850,
snail: PO BOX 401 Glebe NSW 2037 Australia
Checkout the Felix programming language http://felix.sf.net
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next prev parent reply other threads:[~2004-07-31 18:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-31 8:56 [Caml-list] const equivalent for mutable types? Christopher A. Gorski
2004-07-31 9:24 ` Jean-Marie Gaillourdert
2004-07-31 10:24 ` Jean-Marie Gaillourdert
2004-07-31 10:50 ` Markus Mottl
2004-07-31 14:31 ` Brian Hurt
2004-07-31 15:51 ` Markus Mottl
2004-07-31 17:05 ` skaller
2004-07-31 10:34 ` Markus Mottl
2004-07-31 13:44 ` Jon Harrop
2004-07-31 16:31 ` [Caml-list] Phantom types Markus Mottl
2004-08-23 9:49 ` Jon Harrop
2004-08-23 12:25 ` [Caml-list] Why does ocaml use custom buffering? Daan Leijen
2004-08-23 15:16 ` [Caml-list] Phantom types Jon Harrop
2004-08-27 9:03 ` Jacques GARRIGUE
2004-08-25 21:03 ` brogoff
2004-07-31 16:35 ` [Caml-list] const equivalent for mutable types? skaller
2004-07-31 17:23 ` [Caml-list] Functional arrays Jon Harrop
2004-07-31 18:45 ` skaller [this message]
2004-08-02 5:07 ` brogoff
2004-08-02 7:45 ` Diego Olivier Fernandez Pons
2004-08-05 16:42 ` Daniel Ortmann
2004-08-05 17:02 ` Diego Olivier Fernandez Pons
2004-08-05 17:16 ` Diego Olivier Fernandez Pons
2004-07-31 17:45 ` [Caml-list] const equivalent for mutable types? Chris Gorski
2004-07-31 14:11 ` Brian Hurt
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