[#12073] Re: Ruby is much slower on linux when compiled with --enable-pthread? — "M. Edward (Ed) Borasky" <znmeb@...>

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9 messages 2007/09/04

[#12085] New array methods cycle, choice, shuffle (plus bug in cycle) — David Flanagan <david@...>

Four new methods have been added to Array the Ruby 1.9 trunk. I've got

81 messages 2007/09/06
[#18036] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — Charles Oliver Nutter <charles.nutter@...> 2008/07/31

Restarting this thread because I missed it the first time around and

[#18037] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — Yukihiro Matsumoto <matz@...> 2008/07/31

Hi,

[#18038] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — "Gregory Brown" <gregory.t.brown@...> 2008/08/01

On Thu, Jul 31, 2008 at 7:50 PM, Yukihiro Matsumoto <matz@ruby-lang.org> wrote:

[#18046] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — Michael Neumann <mneumann@...> 2008/08/01

Gregory Brown wrote:

[#18048] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — Charles Oliver Nutter <charles.nutter@...> 2008/08/01

Michael Neumann wrote:

[#18051] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — "David A. Black" <dblack@...> 2008/08/01

Hi --

[#18053] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — "Wilson Bilkovich" <wilsonb@...> 2008/08/01

On 8/1/08, David A. Black <dblack@rubypal.com> wrote:

[#18074] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — David Flanagan <david@...> 2008/08/01

Wilson Bilkovich wrote:

[#18080] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — Yukihiro Matsumoto <matz@...> 2008/08/02

Hi,

[#18097] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — "Pit Capitain" <pit.capitain@...> 2008/08/03

2008/8/2 Yukihiro Matsumoto <matz@ruby-lang.org>:

[#18040] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — Jim Weirich <jim.weirich@...> 2008/08/01

On Jul 31, 2008, at 7:33 PM, Charles Oliver Nutter wrote:

[#18056] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — Thomas Enebo <Thomas.Enebo@...> 2008/08/01

Jim Weirich wrote:

[#18059] Re: New array methods cycle, choice, shuffle (plus bug in cycle) — Jim Weirich <jim.weirich@...> 2008/08/01

On Aug 1, 2008, at 1:53 PM, Thomas Enebo wrote:

[#12096] Next 1.8.6 on Sept. 22 — Urabe Shyouhei <shyouhei@...>

Hi all.

28 messages 2007/09/09

[#12201] how about actors implemented in ruby-core itself — hemant <gethemant@...>

Hi,

12 messages 2007/09/20

[#12248] arbitrary Unicode characters in identifiers? — David Flanagan <david@...>

12 messages 2007/09/26

[#12284] gc.c -- possible logic error? — Hugh Sasse <hgs@...>

I've been looking at Tom Copeland's memory allocation problem:

36 messages 2007/09/28
[#12329] Re: gc.c -- possible logic error? — Tanaka Akira <akr@...> 2007/10/01

In article <Pine.GSO.4.64.0709281302390.26570@brains.eng.cse.dmu.ac.uk>,

[#12305] Will 1.8.6 remain compiled with VC6? — "Luis Lavena" <luislavena@...>

Hello Core developers.

29 messages 2007/09/30
[#12306] Re: Will 1.8.6 remain compiled with VC6? — "Austin Ziegler" <halostatue@...> 2007/09/30

On 9/30/07, Luis Lavena <luislavena@gmail.com> wrote:

Re: New array methods cycle, choice, shuffle (plus bug in cycle)

From: Jon Olson <jon@...>
Date: 2007-09-07 01:13:55 UTC
List: ruby-core #12088
On Sep 6, 2007, at 6:11 PM, David Flanagan wrote:

> Four new methods have been added to Array the Ruby 1.9 trunk.  I've  
> got a couple of questions and comments and one bug report:
>
<snip>
>
> choice returns a random element from the array.  I don't like the  
> name of this method: neither the word "choice" nor it verb form  
> "choose" imply randomness--instead they suggest the opposite.  I  
> suggest just using the name "rand", "random" or "random_element".  
> Most array methods are verbs, but a noun here would match the  
> existing methods first and last.  Also, may I suggest a random!  
> variant of the method that returns *and removes* a random element  
> from the array?  first and last already have shift and pop to serve  
> this purpose.
>
<snip>

Choose seems like a reasonable name if you consider it in a  
combinatorial sense (i.e.,  6 choose 2 for 6!/(4!2!)). With that  
meaning though, it makes sense for this method to take an optional  
parameter indicating the number of elements to select, defaulting to  
nil. It could return the element itself in this case or a single  
element array when called with the number 1.

-- Jon Olson



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