[#6954] Why isn't Perl highly orthogonal? — Terrence Brannon <brannon@...>

27 messages 2000/12/09

[#7022] Re: Ruby in the US — Kevin Smith <kevinbsmith@...>

> Is it possible for the US to develop corporate

36 messages 2000/12/11
[#7633] Re: Ruby in the US — Dave Thomas <Dave@...> 2000/12/19

tonys@myspleenklug.on.ca (tony summerfelt) writes:

[#7636] Re: Ruby in the US — "Joseph McDonald" <joe@...> 2000/12/19

[#7704] Re: Ruby in the US — Jilani Khaldi <jilanik@...> 2000/12/19

> > first candidates would be mysql and postgressql because source is

[#7705] Code sample for improvement — Stephen White <steve@...> 2000/12/19

During an idle chat with someone on IRC, they presented some fairly

[#7750] Re: Code sample for improvement — "Guy N. Hurst" <gnhurst@...> 2000/12/20

Stephen White wrote:

[#7751] Re: Code sample for improvement — David Alan Black <dblack@...> 2000/12/20

Hello --

[#7755] Re: Code sample for improvement — "Guy N. Hurst" <gnhurst@...> 2000/12/20

David Alan Black wrote:

[#7758] Re: Code sample for improvement — Stephen White <steve@...> 2000/12/20

On Wed, 20 Dec 2000, Guy N. Hurst wrote:

[#7759] Next amusing problem: talking integers (was Re: Code sample for improvement) — David Alan Black <dblack@...> 2000/12/20

On Wed, 20 Dec 2000, Stephen White wrote:

[#7212] New User Survey: we need your opinions — Dave Thomas <Dave@...>

16 messages 2000/12/14

[#7330] A Java Developer's Wish List for Ruby — "Richard A.Schulman" <RichardASchulman@...>

I see Ruby as having a very bright future as a language to

22 messages 2000/12/15

[#7354] Ruby performance question — Eric Crampton <EricCrampton@...>

I'm parsing simple text lines which look like this:

21 messages 2000/12/15
[#7361] Re: Ruby performance question — Dave Thomas <Dave@...> 2000/12/15

Eric Crampton <EricCrampton@worldnet.att.net> writes:

[#7367] Re: Ruby performance question — David Alan Black <dblack@...> 2000/12/16

On Sat, 16 Dec 2000, Dave Thomas wrote:

[#7371] Re: Ruby performance question — "Joseph McDonald" <joe@...> 2000/12/16

[#7366] GUIs for Rubies — "Conrad Schneiker" <schneik@...>

Thought I'd switch the subject line to the subject at hand.

22 messages 2000/12/16

[#7416] Re: Ruby IDE (again) — Kevin Smith <kevins14@...>

>> >> I would contribute to this project, if it

17 messages 2000/12/16
[#7422] Re: Ruby IDE (again) — Holden Glova <dsafari@...> 2000/12/16

-----BEGIN PGP SIGNED MESSAGE-----

[#7582] New to Ruby — takaoueda@...

I have just started learning Ruby with the book of Thomas and Hunt. The

24 messages 2000/12/18

[#7604] Any corrections for Programming Ruby — Dave Thomas <Dave@...>

12 messages 2000/12/18

[#7737] strange border-case Numeric errors — "Brian F. Feldman" <green@...>

I haven't had a good enough chance to familiarize myself with the code in

19 messages 2000/12/20

[#7801] Is Ruby part of any standard GNU Linux distributions? — "Pete McBreen, McBreen.Consulting" <mcbreenp@...>

Anybody know what it would take to get Ruby into the standard GNU Linux

15 messages 2000/12/20

[#7938] Re: defined? problem? — Kevin Smith <sent@...>

matz@zetabits.com (Yukihiro Matsumoto) wrote:

26 messages 2000/12/22
[#7943] Re: defined? problem? — Dave Thomas <Dave@...> 2000/12/22

Kevin Smith <sent@qualitycode.com> writes:

[#7950] Re: defined? problem? — Stephen White <steve@...> 2000/12/22

On Fri, 22 Dec 2000, Dave Thomas wrote:

[#7951] Re: defined? problem? — David Alan Black <dblack@...> 2000/12/22

On Fri, 22 Dec 2000, Stephen White wrote:

[#7954] Re: defined? problem? — Dave Thomas <Dave@...> 2000/12/22

David Alan Black <dblack@candle.superlink.net> writes:

[#7975] Re: defined? problem? — David Alan Black <dblack@...> 2000/12/22

Hello --

[#7971] Hash access method — Ted Meng <ted_meng@...>

Hi,

20 messages 2000/12/22

[#8030] Re: Basic hash question — ts <decoux@...>

>>>>> "B" == Ben Tilly <ben_tilly@hotmail.com> writes:

15 messages 2000/12/24
[#8033] Re: Basic hash question — "David A. Black" <dblack@...> 2000/12/24

On Sun, 24 Dec 2000, ts wrote:

[#8178] Inexplicable core dump — "Nathaniel Talbott" <ntalbott@...>

I have some code that looks like this:

12 messages 2000/12/28

[#8196] My first impression of Ruby. Lack of overloading? (long) — jmichel@... (Jean Michel)

Hello,

23 messages 2000/12/28

[#8198] Re: Ruby cron scheduler for NT available — "Conrad Schneiker" <schneik@...>

John Small wrote:

14 messages 2000/12/28

[#8287] Re: speedup of anagram finder — "SHULTZ,BARRY (HP-Israel,ex1)" <barry_shultz@...>

> -----Original Message-----

12 messages 2000/12/29

[ruby-talk:7526] Re: flatten_by(n)

From: "Ben Tilly" <ben_tilly@...>
Date: 2000-12-18 00:51:29 UTC
List: ruby-talk #7526
David Alan Black <dblack@candle.superlink.net> wrote:
>
>On Mon, 18 Dec 2000, David Alan Black wrote:
>
> > On Mon, 18 Dec 2000, David Alan Black wrote:
> >
> > Next iteration:
> >
> >   def flatten_once
> >     res = []
> >     for e in self
> >       res.push e if e.nil?
> >       res += e.to_a
> >     end
> >     res
> >   end
> >
>
>I don't know about the rest of you, but I've learned a lot today about
>how arrays get extended in Ruby :-)

:-)

>The above breaks on empty strings.  "".to_a => [], and
>[1,2,3] + [] == [1,2,3].  So if you have "" in the original
>array, it will disappear.

Strings turn into arrays of characters?  I think I
understand why but I still don't really like that.

>So -- I'm actually back to something quite similar to Ben's
>first suggestion, in response to my recursive version, except
>I'm using concat instead of '+=' because concat is a lot faster.
>(Surprisingly faster, to me.)

It it surprising to me that it is faster.  IMO += should be just
syntactic sugar...

>   def flatten_once
>     res = []
>     for e in self
>       if e.is_a? Array then res.concat e else res.push e end
>     end
>     res
>   end
>
>
>For the record:
>
>30000 iterations:
>
>       user     system      total        real
>  10.330000   0.000000  10.330000 ( 10.327764)  # res.concat ...
>  13.490000   0.000000  13.490000 ( 13.506367)  # res += ...
>
>And now I really must go do some real work....

I didn't contribute much, but it was fun watching. :-)

Cheers,
Ben
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