[#35036] Intentional Programming — "John" <nojgoalbyspam@...>

Hi all

17 messages 2002/03/01

[#35112] RDoc question — Michael Davis <mdavis@...>

I have a question about RDoc. I would like to reference an external

17 messages 2002/03/02

[#35162] string to array and back — Ron Jeffries <ronjeffries@...>

I am needing to convert strings to arrays of bytes and back. I see pack and

19 messages 2002/03/03

[#35364] file reading impossibly slow? — Ron Jeffries <ronjeffries@...>

So I'm doing this benchmark to work with my set program. Part of the problem is

18 messages 2002/03/07

[#35429] Interesting link on static/dynamic typing... — Robert Feldt <feldt@...>

...relevant to Ruby compared to other languages discussion:

25 messages 2002/03/08
[#35441] Re: Interesting link on static/dynamic typing... — Paul Brannan <paul@...> 2002/03/08

On Fri, Mar 08, 2002 at 05:34:43PM +0900, Robert Feldt wrote:

[#35460] Spam, ruby-talk, and me — Dave Thomas <Dave@...>

14 messages 2002/03/08

[#35537] Confusion — David Corbin <dcorbin@...>

The following is from my debugging through xmlc.rb

16 messages 2002/03/10

[#35579] RE: WIN32OLE and LDAP — "Morris, Chris" <chris.morris@...>

> The new version 0.4.2 of Win32OLE has WIN32OLE.bind method.

16 messages 2002/03/11

[#35652] Method type 'abstract' — Peter Hickman <peter@...>

The one thing I miss in Ruby is the abstract class method to go along

15 messages 2002/03/12

[#35653] Some potential RCRs — "Bob Alexander" <bobalex@...>

Here are a few thing I am considering submitting as RCRs. I'm looking for comments to help decide whether to make them official, so please let know what you think is good and bad about these...

50 messages 2002/03/12
[#35672] Re: Some potential RCRs — matz@... (Yukihiro Matsumoto) 2002/03/12

Hi,

[#35683] Re: Some potential RCRs — Massimiliano Mirra <list@...> 2002/03/12

On Wed, Mar 13, 2002 at 03:58:01AM +0900, Yukihiro Matsumoto wrote:

[#35697] Re: Some potential RCRs — David Alan Black <dblack@...> 2002/03/13

Hello --

[#35694] rpkg 0.3 — Massimiliano Mirra <list@...>

14 messages 2002/03/13
[#35699] RE: [ANN] rpkg 0.3 — <james@...> 2002/03/13

>

[#35787] testunit - setup -> set_up ? — "Morris, Chris" <chris.morris@...>

I'm just starting to use testunit instead of rubyunit ... I noticed with an

21 messages 2002/03/13
[#35793] RE: testunit - setup -> set_up ? — "Nathaniel Talbott" <nathaniel@...> 2002/03/13

Morris, Chris [mailto:chris.morris@snelling.com] wrote:

[#35796] Re: testunit - setup -> set_up ? — Dave Thomas <Dave@...> 2002/03/13

"Nathaniel Talbott" <nathaniel@talbott.ws> writes:

[#35797] RE: testunit - setup -> set_up ? — "Nathaniel Talbott" <nathaniel@...> 2002/03/13

dave@thomases.com [mailto:dave@thomases.com] wrote:

[#35898] camelCase and underscore_style — "Morris, Chris" <chris.morris@...>

First, a question. If underscore_style is the Ruby norm for methods and the

20 messages 2002/03/15
[#35924] Re: camelCase and underscore_style — "Guy N. Hurst" <gnhurst@...> 2002/03/15

Phil Tomson wrote:

[#35930] RE: camelCase and underscore_style — "Nathaniel Talbott" <nathaniel@...> 2002/03/16

Guy N. Hurst [mailto:gnhurst@hurstlinks.com] wrote:

[#35989] ANN: Locana GUI and GUI Builder version 0.81 — Michael Davis <mdavis@...>

I am pleased to announce release 0.81 of Locana. Locana is a GUI

16 messages 2002/03/16

[#35992] XPath — Michael Schuerig <schuerig@...>

27 messages 2002/03/16

[#36034] Mini Rant: Indenting — Thomas Hurst <tom.hurst@...>

Why is it that I see *so* much code like:

14 messages 2002/03/17

[#36049] web templating for static sites? — Massimiliano Mirra <list@...>

I'm using the Template Toolkit for generating static web sites and I

42 messages 2002/03/17
[#36426] web standars (was: web templating for static sites?) — Tobias Reif <tobiasreif@...> 2002/03/20

Albert Wagner wrote:

[#36052] Xml Serialization for Ruby — "Chris Morris" <chrismo@...>

=Xml Serialization for Ruby

20 messages 2002/03/17
[#36059] Re: [ANN] Xml Serialization for Ruby — Massimiliano Mirra <list@...> 2002/03/17

On Mon, Mar 18, 2002 at 05:20:56AM +0900, Chris Morris wrote:

[#36067] eval/Module question — David Corbin <dcorbin@...>

If I have a String src that is similar to the following:

13 messages 2002/03/18

[#36157] Development of Windows version of Ruby — ptkwt@...1.aracnet.com (Phil Tomson)

Now that we've dumped the cygwin requirement for the Windows version of

63 messages 2002/03/18
[#36330] Re: Development of Windows version of Ruby — Ron Jeffries <ronjeffries@...> 2002/03/19

On Tue, 19 Mar 2002 14:05:27 GMT, "Albert L. Wagner" <alwagner@uark.edu> wrote:

[#36431] Re: Development of Windows version of Ruby — Dennis Newbold <dennisn@...> 2002/03/20

[#36458] Windows version of Ruby (proposals) — ptkwt@... (Phil Tomson) 2002/03/21

Dennis Newbold <dennisn@pe.net> wrote in message news:<Pine.GSO.3.96.1020320113603.22242B-100000@shell2>...

[#36482] RE: Windows version of Ruby (proposals) — "Christian Boos" <cboos@...> 2002/03/21

Some thoughts on the 2 first Windows issues, plus a 4th one...

[#36496] Re: Windows version of Ruby (proposals) — Dave Thomas <Dave@...> 2002/03/21

"Christian Boos" <cboos@bct-technology.com> writes:

[#36510] Re: Windows version of Ruby (proposals) — nobu.nokada@... 2002/03/21

Hi,

[#36514] Re: Windows version of Ruby (proposals) — Dave Thomas <Dave@...> 2002/03/21

nobu.nokada@softhome.net writes:

[#36518] Re: Windows version of Ruby (proposals) — nobu.nokada@... 2002/03/21

Hi,

[#36211] dots in Dir.entries — matz@... (Yukihiro Matsumoto)

Hi,

22 messages 2002/03/19

[#36231] style choice — Ron Jeffries <ronjeffries@...>

A style question for the community ... which of the following do you prefer, and

18 messages 2002/03/19

[#36345] ANN: REXML 2.0 — Sean Russell <ser@...>

I have a feeling there will only be three major revisions of REXML. Version

19 messages 2002/03/20

[#36610] Re: Windows version of Ruby (proposals) — Ron Jeffries <ronjeffries@...>

On Thu, 21 Mar 2002 14:11:55 GMT, Dave Thomas <Dave@PragmaticProgrammer.com> wrote:

16 messages 2002/03/22

[#36645] Ruby for Mac OS 10.1 — Jim Freeze <jim@...>

Hi:

28 messages 2002/03/23

[#36768] Re: Difference between 'do' and 'begin' — Clemens Hintze <c.hintze@...>

In <slrna9ulvi.f2h.mwg@fluffy.isd.dp.ua> Wladimir Mutel <mwg@fluffy.isd.dp.ua> writes:

23 messages 2002/03/26
[#36783] RE: Difference between 'do' and 'begin' — <james@...> 2002/03/26

[#36792] Re: Difference between 'do' and 'begin' — Kent Dahl <kentda@...> 2002/03/26

james@rubyxml.com wrote:

[#36808] Error calling Tk in a loop — <james@...>

I'm trying to write some code that pops up a Tk window when for certain

15 messages 2002/03/26

[#36841] RE: Windows version of Ruby (proposals) — "Andres Hidalgo" <sol123@...>

I believe that Ruby has a place in windows (Office), I happened to have

14 messages 2002/03/27

[#36863] Hash.new(Hash.new) doesn't use Hash.new as default value — "Jonas Delfs" <jonas@...>

Hi -

18 messages 2002/03/27

[#37080] Why isn't Math object-oriented? — Bil Kleb <W.L.Kleb@...>

So I'm reading along in the Pixaxe book (yet again), and I am told

15 messages 2002/03/30

[#37121] String#begins?(s) — timsuth@... (Tim Sutherland)

class String

24 messages 2002/03/31

Re: Method type 'abstract'

From: Jim Menard <jimm@...>
Date: 2002-03-12 17:57:50 UTC
List: ruby-talk #35670
Peter Hickman <peter@semantico.com> writes:

> Nat Pryce wrote:
> 
> >In Ruby *all* methods are abstract unless implemented by a class.
> >
> >Or to put it in a more useful way, abstract methods are not required in a
> >dynamically typed language such as Ruby, only in typed languages like Java
> >or C++.
> >
> Not quite what I had in mind. If I create a class I will provide various 
> methods that a subclass can override. But in many cases they will pick 
> up the super classes' methods. However in the class I have in mind there 
> is one method that must exist in the subclass for which there is no 
> meaningfull default action that it can undertake, the subclass must 
> override this method. In Java I would mark the method as abstract rather 
> than just public or private and when I subclass it the compiler would 
> choke if I did not provide the override in the subclass.

In Smalltalk it is common to implement this method in the superclass and
have it call "subclassResponsibility", a method defined in Object.

You could throw an exception. That's very useful for unit testing.

Jim
-- 
Jim Menard, jimm@io.com, http://www.io.com/~jimm/
"Alas! The onion you are eating is someone else's waterlily."
    -- A fortune cookie fortune

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