[#17198] enhancing Ruby error messages for out of the bound constant Fixnum? — Guillaume Cottenceau <gc@...>

Hi,

11 messages 2001/07/03

[#17206] /* */ comments — Dave Thomas <Dave@...>

43 messages 2001/07/04
[#17207] Re: /* */ comments — Stephen White <spwhite@...> 2001/07/04

On Wed, 4 Jul 2001, Dave Thomas wrote:

[#17251] Re: /* */ comments — Sean Chittenden <sean-ruby-talk@...> 2001/07/04

> Over on http://www.rubygarden.org, dv posted a patch to parse.y that

[#17268] Re: /* */ comments — matz@... (Yukihiro Matsumoto) 2001/07/05

Hi,

[#17212] Ruby 1.6.4 Win32 .exe installer question — A Bull in the China Shop of Life <feoh@...>

Folks;

11 messages 2001/07/04

[#17225] Re: /* */ comments — Arnaud Meuret <ameuret@...4you.com>

|From: Mark Slagell [mailto:ms@iastate.edu]

17 messages 2001/07/04

[#17240] Ruby Mascot/logo — "Kevin Powick" <kpowick@...>

Hi there.

14 messages 2001/07/04

[#17281] Inheritance — "Aleksei Guzev" <aleksei.guzev@...>

15 messages 2001/07/05
[#17282] Re: Inheritance — ts <decoux@...> 2001/07/05

>>>>> "A" == Aleksei Guzev <aleksei.guzev@bigfoot.com> writes:

[#17348] Adding a method to a class at the top-level — Guillaume Cottenceau <gc@...>

Comrades,

14 messages 2001/07/05

[#17482] Aliases for class methods — "HarryO" <harryo@...>

Say I wanted to write my own version of File#open that adds some

23 messages 2001/07/08

[#17511] Ruby on Slashdot — jweirich@...

Ruby is currently mentioned on Slashdot. I posted some references.

29 messages 2001/07/08
[#17512] Re: Ruby on Slashdot — Tobias Reif <tobiasreif@...> 2001/07/08

Interesting...

[#17518] Re: Ruby on Slashdot — matz@... (Yukihiro Matsumoto) 2001/07/09

Hi,

[#17519] Re: Ruby on Slashdot — "James (ruby-talk)" <ruby@...> 2001/07/09

> |I thought about that too; what about Ruby being a standard?

[#17525] Re: Ruby on Slashdot — matz@... (Yukihiro Matsumoto) 2001/07/09

Hi,

[#17536] Re: Ruby on Slashdot — David Alan Black <dblack@...> 2001/07/09

Hello --

[#17572] Re: Constants and Variables — "HarryO" <harryo@...>

> If you want objects that don't change, try Object#freeze,

25 messages 2001/07/10

[#17732] Re: Array#sort! returns nil when array empty — hfulton@...

> Array#sort! returns nil if the array is empty, whereas ri

32 messages 2001/07/12
[#17736] Re: Array#sort! returns nil when array empty — Paul Brannan <pbrannan@...> 2001/07/12

On Fri, 13 Jul 2001 hfulton@pop-server.austin.rr.com wrote:

[#17739] Re: Array#sort! returns nil when array empty — ts <decoux@...> 2001/07/12

>>>>> "P" == Paul Brannan <pbrannan@atdesk.com> writes:

[#17746] Re: Array#sort! returns nil when array empty — Paul Brannan <pbrannan@...> 2001/07/12

On Fri, 13 Jul 2001, ts wrote:

[#17747] What is Array#- ? — Jim Freeze <jim@...> 2001/07/12

While following the Array thread, I noticed the minus

[#17752] Re: What is Array#- ? — Dave Thomas <Dave@...> 2001/07/12

Jim Freeze <jim@freeze.org> writes:

[#17753] Re: What is Array#- ? — Jim Freeze <jim@...> 2001/07/12

On Fri, 13 Jul 2001, Dave Thomas wrote:

[#17833] Extending objects — "Aleksei Guzev" <aleksei.guzev@...>

16 messages 2001/07/14
[#17834] Ruby-newbie seeks help with Rubywin starting IRB — "Euan Mee" <lucid@...> 2001/07/14

Once I fire up Rubywin, and then invoke _R_uby _I_rb from the

[#17839] Re: Ruby-newbie seeks help with Rubywin starting IRB — A Bull in the China Shop of Life <feoh@...> 2001/07/14

At 07:05 PM 7/14/01 +0900, Euan Mee spewed forth:

[#17859] Re: Creating methods on the fly — "HarryO" <harryo@...>

I

18 messages 2001/07/15

[#17925] Movement in scripting language communities to integrate XML-RPC — gsemones@... (Guerry Semones)

Greetings,

20 messages 2001/07/16
[#17934] Re: Movement in scripting language communities to integrate XML-RPC — Tobias Reif <tobiasreif@...> 2001/07/16

"out of the box" by including

[#18018] Broadcasting data — "HarryO" <harryo@...>

Does someone have an example of broadcasting data around a network using

12 messages 2001/07/18

[#18023] [ANN] libxslt Rubified! — Wai-Sun Chia <waisun.chia@...>

Hello,

16 messages 2001/07/18
[#18024] Re: [ANN] libxslt Rubified! — TAKAHASHI Masayoshi <maki@...> 2001/07/18

Wai-Sun Chia <waisun.chia@compaq.com> wrote:

[#18100] Looking for Ruby programming exercises — Wayne Vucenic <wvucenic@...> 2001/07/19

I've been learning Ruby, mostly with the Pickaxe book, and it's going

[#18188] Newbie. Sinking fast. Please help. — Matt <matt@...>

I bought Programming Ruby a number of months back and finally have an opportunity to try out Ruby. However, I can't get it to build. Actually, that's not quite accurate. It builds fine. It won't pass 'make test'.

12 messages 2001/07/20

[#18193] Re: 99 bottles of beer — "Dat Nguyen" <thucdat@...>

18 messages 2001/07/20
[#18204] Re: 99 bottles of beer — Glen Starchman <glen@...> 2001/07/20

99.downto(0){|x|w=" on the wall";u="#{x!=0?eval(x.to_s):'no more'}

[#18306] Ruby as opposed to Python? — "Mark Nenadov" <mnenadov@...>

Hello. I have toyed with the idea of trying Ruby out for some time now.

118 messages 2001/07/22
[#18759] Re: Ruby as opposed to Python? — Paul Prescod <paulp@...> 2001/07/29

Yukihiro Matsumoto wrote:

[#18774] Re: Ruby as opposed to Python? — "Florian G. Pflug" <fgp@...> 2001/07/30

On Mon, Jul 30, 2001 at 05:58:22AM +0900, Paul Prescod wrote:

[#18393] Trouble Using FXRuby on cygwin/Windows NT — rgilbert1@... (Robbie Gilbert)

Hi,

10 messages 2001/07/23

[#18566] Which database should I use? — Urban Hafner <the-master-of-bass@...>

Hello everybody,

17 messages 2001/07/26
[#18575] Re: Which database should I use? — Urban Hafner <the-master-of-bass@...> 2001/07/26

[#18582] Re: Which database should I use? — Michael Neumann <neumann@...> 2001/07/26

Urban Hafner wrote:

[ruby-talk:18705] Re: HTML Librarys and OOP Design Philosophy

From: "Nat Pryce" <nat.pryce@...13media.com>
Date: 2001-07-28 17:29:02 UTC
List: ruby-talk #18705
"David Tillman" <dtillman@ozarkaircraftsystems.com> wrote:
>   1. The reply from David Alan Black (ruby-talk:18683) got me
>   to thinking a bit about object design.  When two objects
>   interact, how do you decide which object handles the interaction?
>
>   It could be that a good OOP design book would clear this up for me,
>   _Design_Patterns_ perhaps?
>
>   Example: in my HTML (HTMLoop) library for Ruby you can either pass
>   an Array to a Table object or you can tell an Array to output itself
>   as a table.  (I think it is convenient to have both as myArray.table
>   returns a string immediately but the Table object waits for a puts,
>   to_s, etc.)

A rule of thumb is to avoid cyclic dependencies between classes and never
have cyclic dependencies between packages (Ruby files and modules), which
means no cyclic dependencies between classes in different modules.  So, if
Table depends on Array, Array should not depend on Table.  Therefore you
should pass an array to a Table to fill in the table contents, rather than
add a method to Array to turn it into a Table.

By following this rule, a program becomes organised as layers of packages,
with generic, low-level packages at the bottom (data structures, file i/o,
networking, etc.) and application-specific packages at the top.  It sounds
like your HTMLoop package fits somewhere in the middle -- it's used by
application code and depends on generic packages.

Secondly, a class should depend on abstractions, rather than on concrete
classes.  In strongly typed languages, this means classes depend on abstract
interfaces.  In Ruby it means classes should use well-defined protocols to
communicate.  E.g. a Table should be able to process an enumerable object
(one that has an each method), rather than only Array objects.  This also
suggests that you should add the method to the Table class rather than the
Array class.

 Despite the title, The book Large Scale C++ Design by John Lakos has some
good guidelines for organising modules and classes that are applicable to
Ruby programming.

Cheers,
    Nat.


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