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From: Oleg <oleg_inconnu@myrealbox.com>
To: caml-list@inria.fr
Subject: [Caml-list] Array.resize ?
Date: Thu, 11 Jul 2002 18:30:24 -0400	[thread overview]
Message-ID: <200207112228.SAA02692@dewberry.cc.columbia.edu> (raw)
In-Reply-To: <Pine.LNX.4.21.0207101423130.13340-100000@amanda.cs.unm.edu>

Hi

Is there an efficient way in O'Caml to append an element to an array ref?

let append_elt r x = r := Array.append !r [| x |];;

copies the contents of the whole array in its body, while e.g. C++ vector 
push_back in most cases won't (memory is reserved in chunks automatically, or 
it can be reserved manually)

IOW it seems strange to me that functions of arrays can change their contents 
but not their size, while functions of array ref's can do it, but 
inefficiently. How about 

Array.resize :  'a array -> int -> unit

or at least 

Array.resize: 'a array ref -> int -> unit ?

Thanks
Oleg
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  parent reply	other threads:[~2002-07-11 22:28 UTC|newest]

Thread overview: 92+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-08 19:53 [Caml-list] productivity improvement Oleg
2002-07-08 20:14 ` Michael Vanier
2002-07-10 15:50   ` John Max Skaller
2002-07-10 18:56     ` Alessandro Baretta
2002-07-10 19:09       ` Jun P.FURUSE
2002-07-11 23:43         ` Pierre Weis
     [not found] ` <15657.61603.221054.289184@spike.artisan.com>
2002-07-09  4:43   ` [Caml-list] Universal Serializer (was: productivity improvement) Oleg
2002-07-09  7:56     ` Nicolas Cannasse
2002-07-09  7:59     ` Nicolas Cannasse
2002-07-10 16:06       ` John Max Skaller
2002-07-10 22:29         ` Michael Vanier
2002-07-11  8:13           ` Nicolas Cannasse
2002-07-12 12:41           ` John Max Skaller
2002-07-14 12:25             ` [Caml-list] Statically detecting arrays bound exceptions ?? (was: Universal Serializer) Berke Durak
2002-07-14 13:24               ` Alessandro Baretta
2002-07-15  8:23                 ` Xavier Leroy
2002-07-15  8:39                 ` Noel Welsh
2002-07-15 21:22                   ` Oleg
2002-07-15 22:44                     ` Michael Vanier
2002-07-16  6:43                     ` Florian Hars
2002-07-16 20:22               ` [Caml-list] " John Max Skaller
2002-07-16 20:36                 ` Johan Baltié
2002-07-16 20:55                   ` Hao-yang Wang
2002-07-17  8:25                   ` Noel Welsh
2002-07-12  1:41         ` [Caml-list] Universal Serializer (was: productivity improvement) Eray Ozkural
2002-07-12  8:10           ` [Caml-list] OCaml QT bindings Stefano Zacchiroli
2002-07-12 17:30             ` Eray Ozkural
2002-07-12 10:37         ` [Caml-list] Re: productivity improvement Oleg
2002-07-12 11:23           ` Markus Mottl
2002-07-12 11:34             ` Oleg
2002-07-12 11:43               ` Markus Mottl
2002-07-12 12:59                 ` Pierre Weis
2002-07-12 16:42                   ` Markus Mottl
2002-07-14 20:44                 ` Dave Berry
2002-07-14 22:13                   ` Markus Mottl
2002-07-15 16:43                     ` Alwyn Goodloe
2002-07-16 20:14                     ` Dave Berry
2002-07-17  3:21                       ` Eric Merritt
2002-07-15  9:39                   ` Alessandro Baretta
2002-10-15  8:38                   ` Eray Ozkural
2002-10-17 21:27                     ` Dave Berry
2002-10-18  2:48                       ` Eray Ozkural
2002-10-20 12:46                         ` Dave Berry
2002-10-21  6:11                           ` Michael Vanier
2003-05-10 20:41                           ` Eray Ozkural
2002-07-12 11:43             ` Noel Welsh
2002-07-12 12:10               ` Markus Mottl
2002-07-12 13:44           ` John Max Skaller
2002-07-12 16:19             ` Alan Schmitt
2002-07-12 20:41             ` John Carr
2002-07-13 21:19               ` [Caml-list] Re: productivity improvementu Pierre Weis
2002-07-12 21:24             ` [Caml-list] Re: productivity improvement Brian Smith
2002-10-15  8:57             ` Eray Ozkural
2002-10-15 11:50               ` [Caml-list] eproductivity improvement Alessandro Baretta
2002-07-09 12:45 ` [Caml-list] productivity improvement Basile STARYNKEVITCH
2002-07-09 18:20   ` Shannon --jj Behrens
2002-07-09 19:16     ` Oleg
2002-07-09 20:31       ` Shannon --jj Behrens
2002-07-10 10:02     ` sebastien FURIC
2002-07-10 11:58       ` Dave Mason
2002-07-10 13:11         ` sebastien FURIC
2002-07-10 19:22           ` nadji
2002-07-10 20:15       ` Sieve of Eratosthenes Performance: various languages (Re: [Caml-list] productivity improvement) Oleg
2002-07-10 20:34         ` [Caml-list] " William D. Neumann
2002-07-10 20:47           ` [Caml-list] Re: Sieve of Eratosthenes Performance: various languages Alexander V.Voinov
2002-07-10 21:16             ` William D. Neumann
2002-07-10 20:49           ` [Caml-list] Re: Sieve of Eratosthenes Performance: various languages (Re: [Caml-list] productivity improvement) William D. Neumann
2002-07-11 22:30           ` Oleg [this message]
2002-07-11 23:06             ` [Caml-list] Array.resize ? Alessandro Baretta
2002-07-12 13:01               ` John Max Skaller
2002-07-12 18:24                 ` Shawn Wagner
2002-07-11 23:31             ` Markus Mottl
2002-07-12 12:54             ` John Max Skaller
2002-07-12 13:23               ` Olivier Andrieu
2002-07-12 14:05                 ` John Max Skaller
2002-07-12 16:09               ` Brian Rogoff
2002-10-19  9:16                 ` Eray Ozkural
2002-10-19 22:15                   ` [Caml-list] debugger losing contact with debuggee process Lex Stein
2002-10-20 10:06                     ` Pierre Weis
2002-10-21  9:11                     ` Xavier Leroy
2002-10-18  3:05             ` [Caml-list] Array.resize ? Eray Ozkural
2002-10-19  1:51               ` Oleg
2003-05-10 20:24                 ` Eray Ozkural
2002-07-10 20:48         ` Sieve of Eratosthenes Performance: various languages (Re: [Caml-list] productivity improvement) Markus Mottl
2002-07-11  5:53           ` Anton E. Moscal
2002-10-18  3:07           ` Eray Ozkural
2002-07-10 15:39 ` [Caml-list] productivity improvement John Max Skaller
2002-07-11  8:57   ` Nicolas barnier
2002-07-12 12:16   ` [Caml-list] Is this a bug? John Max Skaller
2002-07-12 14:05     ` Xavier Leroy
2002-07-16  3:34   ` [Caml-list] productivity improvement Oleg
2002-10-18  3:13     ` Eray Ozkural

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