[#48779] Ruby jobs — Phlip <phlip_cpp@...>

Rubies:

31 messages 2002/09/01

[#48886] cgi redirect — Tom Robinson <tom@...>

in perl, this is easy:

15 messages 2002/09/03

[#48917] New list: ruby-modules - for module developers... — Sean Chittenden <sean@...>

Howdy folks. I've put together a new list for ruby developers at

18 messages 2002/09/03

[#48978] option remember

Hi,

16 messages 2002/09/04

[#49042] Options for optimizing a large Ruby system — sera@... (Francis Hwang)

Hi everybody:

16 messages 2002/09/04

[#49107] RE: suggestions to the Ruby community — "Berger, Daniel" <djberge@...>

I've been following the documentation discussion with some interest. Some

35 messages 2002/09/05
[#49136] RE: suggestions to the Ruby community — " JamesBritt" <james@...> 2002/09/05

[#49294] OS-independent build of ruby — "reckless" <reckless2k@...>

Hi,

42 messages 2002/09/06
[#49318] Re: OS-independent build of ruby — ptkwt@...1.aracnet.com (Phil Tomson) 2002/09/06

In article <alali7$cth$01$1@news.t-online.com>,

[#49450] JRuby (was Re: OS-independent build of ruby) — Austin Ziegler <austin@...> 2002/09/08

JRuby exists ...

[#49297] Larry Wall's comments on Ruby — ptkwt@...1.aracnet.com (Phil Tomson)

http://interviews.slashdot.org/article.pl?sid=02/09/06/1343222&mode=thread&tid=145

29 messages 2002/09/06

[#49301] Re: Larry Wall's comments on Ruby — Andrew Hunt <andy@...>

61 messages 2002/09/06
[#49372] Re: Larry Wall's comments on Ruby — Reimer Behrends <behrends@...> 2002/09/07

Patrick May (patrick-may@monmouth.com) wrote:

[#49446] Re: Larry Wall's comments on Ruby — Austin Ziegler <austin@...> 2002/09/08

On Sat, 7 Sep 2002 14:21:22 +0900, Reimer Behrends wrote:

[#49333] Re: Larry Wall's comments on Ruby — Andrew Hunt <andy@...>

>yeah and as I said, depending on your background , Ruby is just as full

20 messages 2002/09/06

[#49627] Re: Larry Wall's comments on Ruby — "Marcin 'Qrczak' Kowalczyk" <qrczak@...>

Mon, 9 Sep 2002 14:26:37 +0900, Wirianto Djunaidi <ryo_saeba_009@yahoo.com> pisze:

83 messages 2002/09/09
[#49658] Re: Larry Wall's comments on Ruby — "Christoph" <chr_news@...> 2002/09/10

"Yukihiro Matsumoto" wrote

[#49707] Re: Larry Wall's comments on Ruby — David.Stagner@...

I think Gavin is right... we don't "add" strings, we concatenate them.

16 messages 2002/09/10

[#49766] RubyInline 1.0.4 Released! (fwd) — Pat Eyler <pate@...>

Woohoo! another cool new toy to play with!

34 messages 2002/09/10
[#49965] Re: Windows XP : RubyInline 1.0.4 Released! (fwd) — "Park Heesob" <phasis@...> 2002/09/12

Hi,

[#49787] call for commentary: review of Ruby for a magazine (long, sorry!) — Rick Wayne <fewayne@...>

hello again folks,

30 messages 2002/09/10

[#49849] private variables — ts <decoux@...>

81 messages 2002/09/11
[#50348] Re: private variables — William Djaja Tjokroaminata <billtj@...> 2002/09/16

Well, will these localized/private variables make it into the next Ruby

[#49988] not grasping the method overloading/multi-dispatch thing — dblack@...

Hello --

58 messages 2002/09/12
[#49990] Re: not grasping the method overloading/multi-dispatch thing — Friedrich Dominicus <frido@...> 2002/09/12

dblack@candle.superlink.net writes:

[#50040] Re: not grasping the method overloading/multi-dispatch thing — ptkwt@...1.aracnet.com (Phil Tomson) 2002/09/12

In article <3D80AD8D.27388.FBF0F18@localhost>,

[#49992] Re: not grasping the method overloading/multi-dispatch thing — dblack@... 2002/09/12

Hi --

[#50027] interesting Perl Journal move — Pat Eyler <pate@...>

The Perl Journal is being reborn yet again. This time, it will be an

21 messages 2002/09/12
[#50041] Re: interesting Perl Journal move — Jim Freeze <jim@...> 2002/09/12

On Fri, Sep 13, 2002 at 01:44:18AM +0900, Pat Eyler wrote:

[#50172] DbTalk 0.7 — Dalibor Sramek <dali@...>

I would like to announce a new release of my Ruby project DbTalk.

17 messages 2002/09/13

[#50224] MVC and OO Design? — jcb@... (MetalOne)

The Model View Controller Architecture has always had me a bit

18 messages 2002/09/14

[#50298] camelCaseTo_ruby_case.rb ?? — Thomas Sdergaard <tsondergaard@...>

Hi,

21 messages 2002/09/15
[#50304] Re: camelCaseTo_ruby_case.rb ?? — dblack@... 2002/09/16

Hello --

[#50312] Re: camelCaseTo_ruby_case.rb ?? — Joel VanderWerf <vjoel@...> 2002/09/16

[#50369] Why are parser tools rarely used in ruby? — "MikkelFJ" <mikkelfj-anti-spam@...>

Why is it that all the ruby source I find in the Ruby (windows) distribution

25 messages 2002/09/16

[#50374] Dependency "trees" - suggestions? — Massimiliano Mirra <list@...>

I'm struggling with building dependency "trees" for rpkg. What

15 messages 2002/09/16

[#50403] comments and continuing strings on the next line — Paul Brannan <pbrannan@...>

I have a tendency to write:

14 messages 2002/09/16

[#50466] Qt vs. FOX vs. ? (was Help on installing ruby-qt on windowsXP) — "Volkmann, Mark" <Mark.Volkmann@...>

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

16 messages 2002/09/17

[#50525] Matz, if you're reading, please scan this email — ser@... (Sean Russell)

I've found a problem with the Ruby interpreter, wherein the

23 messages 2002/09/18
[#51226] Re: Matz, if you're reading, please scan this email — Sean Chittenden <sean@...> 2002/09/24

> I've found a problem with the Ruby interpreter, wherein the

[#51281] Re: Matz, if you're reading, please scan this email — ts <decoux@...> 2002/09/25

>>>>> "S" == Sean Chittenden <sean@chittenden.org> writes:

[#51454] Re: Matz, if you're reading, please scan this email — Sean Chittenden <sean@...> 2002/09/26

> S> In the unit tests for libxml, I think I've pushed things to SEGV land

[#51592] Re: Matz, if you're reading, please scan this email — ts <decoux@...> 2002/09/27

>>>>> "S" == Sean Chittenden <sean@chittenden.org> writes:

[#51742] Re: Matz, if you're reading, please scan this email — Sean Chittenden <sean@...> 2002/09/28

> >>>>> "S" == Sean Chittenden <sean@chittenden.org> writes:

[#51748] Re: Matz, if you're reading, please scan this email — ts <decoux@...> 2002/09/28

>>>>> "S" == Sean Chittenden <sean@chittenden.org> writes:

[#51796] ruby bug in tight loops? (was: Re: Matz, if you're reading, please scan this email) — Sean Chittenden <sean@...> 2002/09/28

> S> :-/ You could be right, but, the IO context is created when reading

[#51825] Re: ruby bug in tight loops? (was: Re: Matz, if you're reading, please scan this email) — ts <decoux@...> 2002/09/29

>>>>> "S" == Sean Chittenden <sean@chittenden.org> writes:

[#51826] Re: ruby bug in tight loops? (was: Re: Matz, if you're reading, please scan this email) — Sean Chittenden <sean@...> 2002/09/29

> S> Good catch, I fixed this in the CVS version, however this is a

[#51831] Re: ruby bug in tight loops? (was: Re: Matz, if you're reading, please scan this email) — ts <decoux@...> 2002/09/29

>>>>> "S" == Sean Chittenden <sean@chittenden.org> writes:

[#50579] How to Efficiently Calculate the Pattern of Zeros and Ones? — William Djaja Tjokroaminata <billtj@...>

Hi,

11 messages 2002/09/18

[#50606] Python the new Lisp, what about Ruby then? — web2ed@... (Edward Wilson)

I've been reading that Python is the new lisp.

19 messages 2002/09/18
[#50614] Re: Python the new Lisp, what about Ruby then? — Tom Sawyer <transami@...> 2002/09/19

come on! python the new lisp? what's that suppose to mean? nothing

[#50629] RE: Python the new Lisp, what about Ruby then? — "Mike Campbell" <michael_s_campbell@...> 2002/09/19

> ruby though just may gain as great a heritage as lisp due to its highly

[#50652] Is better to subclass or to add methods to an existing class? — Vincent Foley <vinfoley@...>

I was discussing with a (Python) friend last night. I told him that one

31 messages 2002/09/19

[#50667] select and select — dblack@...

Hello --

99 messages 2002/09/19
[#50906] class documentation — "Mark Volkmann" <volkmann2@...> 2002/09/21

Is there a general concensus as to the best tool/format for documenting Ruby

[#50787] Re: select and select — Joel VanderWerf <vjoel@...> 2002/09/20

Yukihiro Matsumoto wrote:

[#50911] Re: select and select — matz@... (Yukihiro Matsumoto) 2002/09/21

Hi,

[#50912] Re: select and select — dblack@... 2002/09/21

Hi --

[#51168] Re: select and select — "Gavin Sinclair" <gsinclair@...> 2002/09/24

[#51184] Re: select and select — dblack@... 2002/09/24

Hi --

[#51196] Re: select and select — "Gavin Sinclair" <gsinclair@...> 2002/09/24

[#51199] Re: select and select — dblack@... 2002/09/24

Hi --

[#50732] don't understand cause of `sysread': Bad file descriptor (Errno::EBADF) — Robert McGovern <tarasis@...>

Was writting a script to poll an audiotron (www.audiotron.net) and

13 messages 2002/09/19

[#50762] Thoughts on improving usage of Regexp#match — "Hal E. Fulton" <hal9000@...>

Please feel free to point out obvious things

15 messages 2002/09/20

[#50850] Checking hash key's and values, with case insensitivity — khabibiuf@... (Khurram)

Hey all,

26 messages 2002/09/20

[#50867] Speed up suggestions — Tomas Brixi <tomas_brixi@...>

Hello,

18 messages 2002/09/20

[#50878] String interpolation at will? — "Hal E. Fulton" <hal9000@...>

Maybe I'm overlooking something obvious,

14 messages 2002/09/20
[#50880] RE: String interpolation at will? — Steve Tuckner <STUCKNER@...> 2002/09/20

Maybe this is too dangerous but

[#50958] are functions/methods "first class objects"? — David Garamond <davegaramond@...>

sorry this is a bit philosophical, but i just wonder whether ruby can be

17 messages 2002/09/22

[#50972] Re: Speed up suggestions — Tomas Brixi <tomas_brixi@...>

Thanks all for speedup tips.

22 messages 2002/09/23
[#50975] Re: Speed up suggestions — Ryan Davis <ryand@...> 2002/09/23

[#50983] Re: Speed up suggestions — Tomas Brixi <tomas_brixi@...> 2002/09/23

[#51156] adding overload to ruby — "Bulat Ziganshin" <bulatz@...>

Hello all and especially Matz,

285 messages 2002/09/24
[#51462] Re: adding overload to ruby — William Djaja Tjokroaminata <billtj@...> 2002/09/26

Why not designing a new language with a mix of typed variable and untyped

[#51371] Re: adding overload to ruby — "Justin Johnson" <justinj@...> 2002/09/26

[#51372] Re: adding overload to ruby — "Bulat Ziganshin" <bulatz@...> 2002/09/26

Hello Justin,

[#51375] Re: adding overload to ruby — ts <decoux@...> 2002/09/26

>>>>> "B" == Bulat Ziganshin <bulatz@integ.ru> writes:

[#51376] Re: adding overload to ruby — "Bulat Ziganshin" <bulatz@...> 2002/09/26

Hello ts,

[#51378] Re: adding overload to ruby — ts <decoux@...> 2002/09/26

>>>>> "B" == Bulat Ziganshin <bulatz@integ.ru> writes:

[#51382] Re: adding overload to ruby — "Bulat Ziganshin" <bulatz@...> 2002/09/26

Hello ts,

[#51384] Re: adding overload to ruby — dblack@... 2002/09/26

Hi --

[#51388] Re: adding overload to ruby — "Bulat Ziganshin" <bulatz@...> 2002/09/26

Hello dblack,

[#51391] Re: adding overload to ruby — dblack@... 2002/09/26

Hi --

[#51413] Re: adding overload to ruby — "Justin Johnson" <justinj@...> 2002/09/26

[#51542] Re: adding overload to ruby — "Bulat Ziganshin" <bulatz@...> 2002/09/27

Hello Justin,

[#51574] R (was: adding overload to ruby) — Nikodemus Siivola <tsiivola@...> 2002/09/27

[#51576] Re: R (was: adding overload to ruby) — "Bulat Ziganshin" <bulatz@...> 2002/09/27

Hello Nikodemus,

[#51591] Re: R (was: adding overload to ruby) — Nikodemus Siivola <tsiivola@...> 2002/09/27

[#51621] Re: R — William Djaja Tjokroaminata <billtj@...> 2002/09/27

Hi,

[#51741] Re: R — Nikodemus Siivola <tsiivola@...> 2002/09/28

[#51747] Re: R — William Djaja Tjokroaminata <billtj@...> 2002/09/28

Hi,

[#51918] Re: R — "Bulat Ziganshin" <bulatz@...> 2002/09/30

Hello William,

[#51923] Re: R — matz@... (Yukihiro Matsumoto) 2002/09/30

Hi,

[#51938] Re: R — "Bulat Ziganshin" <bulatz@...> 2002/09/30

Hello Yukihiro,

[#51949] Re: R — matz@... (Yukihiro Matsumoto) 2002/09/30

Hi,

[#51953] Re: R — "Bulat Ziganshin" <bulatz@...> 2002/09/30

Hello Yukihiro,

[#51752] Re: R — dblack@... 2002/09/28

Hi --

[#51755] Re: R — William Djaja Tjokroaminata <billtj@...> 2002/09/28

Oh yes, in fact, this is one of our selling points, right? We show the

[#51593] RE: R (was: adding overload to ruby) — "Christian Boos" <cboos@...> 2002/09/27

Did you have a look at http://merd.net :

[#51467] Re: adding overload to ruby — <bbense+comp.lang.ruby.Sep.26.02@...> 2002/09/26

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

[#51185] Object-Oriented struct Model in C — William Djaja Tjokroaminata <billtj@...>

Hi,

20 messages 2002/09/24

[#51389] Is Ruby's grammar LL(k)? — Mauricio =?unknown-8bit?Q?Fern=E1ndez?= <batsman.geo@...>

16 messages 2002/09/26

[#51444] Ruby/Tk or mod_ruby or what ?? — GBanschbach@...

Dear All,

16 messages 2002/09/26

[#51486] Ruby - common pitfalls? — Rudolf Polzer <AntiATField_adsgohere@...>

Is there a list of common pitfalls beginners in this language should

32 messages 2002/09/26

[#51530] Where Is Method Call Precedence? — William Djaja Tjokroaminata <billtj@...>

Hi,

40 messages 2002/09/27

[#51639] RE: REXML namespace support — "Volkmann, Mark" <Mark.Volkmann@...>

In my case I'm given a string which is a namespace prefix and I want to

14 messages 2002/09/27

[#51809] thoughts on typelessness — dblack@...

Hi --

136 messages 2002/09/29
[#52055] Re: thoughts on typelessness — Bryan Murphy <bryan@...> 2002/10/01

Gavin Sinclair wrote:

[#52059] Re: thoughts on typelessness — Chris Gehlker <canyonrat@...> 2002/10/01

[#52062] Re: thoughts on typelessness — Bryan Murphy <bryan@...> 2002/10/01

Chris Gehlker wrote:

[#52081] Re: thoughts on typelessness — Chris Gehlker <canyonrat@...> 2002/10/01

[#52147] Re: thoughts on typelessness — William Djaja Tjokroaminata <billtj@...> 2002/10/01

Hi Dave,

[#52150] Re: thoughts on typelessness — Dave Thomas <Dave@...> 2002/10/01

William Djaja Tjokroaminata <billtj@y.glue.umd.edu> writes:

[#52151] Re: thoughts on typelessness — GOTO Kentaro <gotoken@...> 2002/10/01

At Wed, 2 Oct 2002 01:37:46 +0900,

[#52154] Re: thoughts on typelessness — Paul Brannan <pbrannan@...> 2002/10/01

On Wed, Oct 02, 2002 at 02:11:24AM +0900, GOTO Kentaro wrote:

[#51810] Re: thoughts on typelessness — William Djaja Tjokroaminata <billtj@...> 2002/09/29

Hi David,

[#51877] Re: thoughts on typelessness — Chris Gehlker <canyonrat@...> 2002/09/29

[#51818] announce@ == less email (FAQ item?) — Ryan Davis <ryand-ruby@...>

ZenTest and ZenWeb were just released. I announced these to several

40 messages 2002/09/29

[#51974] Things That Newcomers to Ruby Should Know — William Djaja Tjokroaminata <billtj@...>

Things That Newcomers to Ruby Should Know

37 messages 2002/09/30
[#52128] Re: Things That Newcomers to Ruby Should Know — William Djaja Tjokroaminata <billtj@...> 2002/10/01

Thanks, Gabriele. I will try to incorporate your input. The "0 is

[#52965] Re: Things That Newcomers to Ruby Should Know — "Kontra, Gergely" <kgergely@...> 2002/10/11

>> - the ||= operator exists :-)

[#52970] Re: Things That Newcomers to Ruby Should Know — William Djaja Tjokroaminata <billtj@...> 2002/10/11

Hi,

[#52971] Re: Things That Newcomers to Ruby Should Know — dblack@... 2002/10/11

Hi --

Re: The problem with run-time type checking

From: Paul Brannan <pbrannan@...>
Date: 2002-09-23 19:33:10 UTC
List: ruby-talk #51101
On Tue, Sep 24, 2002 at 01:38:02AM +0900, Brian Denny wrote:
> if "length" were part of the Enumerable interface, i would consider the
> above behavior to be a defect in the library.  but it's not.  the point is
> that i, as the user of a library, can expect to be able to make certain
> assumptions when i know that an object is of a certain type, as defined by a
> class or an interface/module, that i cannot make if i just know that they
> both respond_to? the same symbols.

Enumerable is a mixin, not an interface.  It's used to add additional
methods to a class that already has an each() method.  Because a class
includes Enumerable doesn't mean that an instance of that class will
have all the methods defined in Enumerable (I can remove or undefine
them), nor does it mean that a class that doesn't include Enumerable
lacks an each_with_index() method that has the same semantics as the one
in Enumerable.  In Ruby, an object's class just isn't a very good
measure of an object's type.

As you pointed out, the set of method names an object responds to is
also not a good measure of the object's type, because it's possible to
have to objects that both respond to the same method, but to give the
method different semantics for each object.  This is why using
respond_to? to check an object's "type" is frowned upon.

I know of no good way to check for the semantics of an object's methods
except by calling those methods; this is where unit tests come in.

An alternative is to use modules as if they were interfaces, but I have
not yet seen an implementation that does this well.  I'm also not sure
it would be widely accepted in the Ruby community.

In the case of String#length and String#each, the problem is that each
iterates over the lines in the String, while length tells you how many
characters are in the String.  IMO, this is a bug in String's interface;
as a result, I rarely call String#each directly, but instead call
String#each_byte or String#each_line.

Paul

In This Thread

Prev Next