[#72642] Advantages of Symbols over constants — Marek Janukowicz <childNOSPAM@...17.ds.pwr.wroc.pl>
On Sunday, 1 June 2003 at 22:00:23 +0900, Marek Janukowicz wrote:
[#72685] How to structure a program for unit testing — John Johnson <jj5412@...>
The time has come. I'm tired of that unsure feeling when I'm about to
[#72717] Unit Testing Style — Eric Schwartz <emschwar@...>
I know I should have written my tests first, but I didn't, so now I'm
[#72729] CALL FOR ASSISTANCE — "MR.IKE COLLINS" <ikecollins@...>
MR.IKE COLLINS
[#72732] case of sub! not working — Ian Macdonald <ian@...>
Hi,
Ian Macdonald wrote:
On Tue 03 Jun 2003 at 10:21:43 +0900, Joel VanderWerf wrote:
----- Original Message -----
> I'll take a stab at it. I can't promise that
[#72735] setuid/setgid ruby scripts — Wesley J Landaker <wjl@...>
Hey folks,
[#72761] Ruby Weekly News — Dave@...
[#72764] file I/O: how can I disable auto-convert of the 2-byte sequence 0x0D, 0x0A into a single byte '\n'? — "Polscheit, Frank" <frank.polscheit@...>
Hi,
[#72771] Ruby install question — Jim Freeze <jim@...>
[#72778] ruby-dev summary 20201 - 20315 — Kazuo Saito <ksaito@...>
Hi all,
On Wed, Jun 04, 2003 at 12:36:13AM +0900, Kazuo Saito wrote:
On Wed, Jun 04, 2003 at 06:50:39PM +0900, Mauricio Fern疣dez wrote:
[#72782] sent e-mail — "James McCall" <jmccall64@...>
you sent an e-mail on 29 april 2002 at 11:02 pm, can you remember where that
[#72799] Test::Unit::MockObject not working — "Shashank Date" <sdate@...>
....so I downloaded the latest version of test-unit-mock from RAA:
[#72804] ruby-1.8.0 (cvs) build failed on HP-UX 11.11 — Wai-Sun Chia <waisun.chia@...>
Version: Ruby 1.8.0 20030522
Hi,
[#72818] RCR: Enhancing matrix.rb — Michael Neumann <mneumann@...>
Hi,
Hi,
[#72842] remove_method question — Daniel Berger <djberge@...>
Hi all,
[#72849] Ruby 1.8.0 — gm@... (George Moschovitis)
Hi everyone,
[#72854] Ruby web hosting survey. — "Warren Brown" <wkb@...>
All,
[#72863] ios.gets doesn't seem to work as advertised — RichardLMuller@... (Richard)
I've got the following script in a Win2000SP3 environment running Ruby
[#72883] Ruby-SWIG question: wrapping function objects with blocks — Christian Szegedy <szegedy@...>
I am trying to use SWIG to generate Ruby wrapper for a
[#72892] Answer on 'lists.bttr.org unreachable?' — "Josef 'Jupp' Schugt" <jupp@...>
Hi!
[#72894] Ruby 1.8.0 net/http bug — Urban Nilsson <urban@...>
I tried the following example code:
[#72907] Syck 0.35 + YAML.rb 0.60 -- the 1st stable release — why the lucky stiff <ruby-talk@...>
Pleased to announce:
why the lucky stiff wrote:
On Fri, Jun 06, 2003 at 06:15:58AM +0900, why the lucky stiff wrote:
Richard Zidlicky (rz@linux-m68k.org) wrote:
On Sat, Jul 05, 2003 at 09:17:18AM +0900, why the lucky stiff wrote:
Could your segmentation fault be due to the same problem as in the
[#72908] Problem with "require" stmt in "test-first " tutorial — RLMuller@... (Richard)
Hi All,
Hi Nobu and Simon,
Hi everybody,
Richard (RLMuller@comcast.net) wrote:
on 6/9/03 10:28 AM, Gour at gour@mail.inet.hr wrote:
John Johnson (jj5412@earthlink.net) wrote:
[#72912] Syck / Yaml example — Shashank Date <shanko_date@...>
hello _why,
[#72922] ANN: ruby-goto, your evil for the evening — Ryan Pavlik <rpav@...>
OK, so I was feeling evil last week sometime. Some people were claiming
On Fri, 2003-06-06 at 17:13, Ryan Pavlik wrote:
[#72940] VAPOR 0.06, Transparent Persistence to PostgreSQL — "Oliver M. Bolzer" <oliver@...>
Hi!
On Fri, 06 Jun 2003 13:44:43 +0200, Anders Borch wrote:
[#72958] Pkg for getting web pages — Jim Freeze <jim@...>
Hi:
[#72972] Using SciTE 1.53 on Windows — Gert Kok <qawaly@...>
Can version 1,53 be used instead of the 1.41 that comes with the Windows
[#72975] join block — "Simon Strandgaard" <0bz63fz3m1qt3001@...>
Simon Strandgaard wrote:
[#72985] What should "class ... end" and "def ... end" return? — itsme213@... (you CAN teach an old dog ...)
Are they expressions? If not, why not?
[#72986] multiple blocks or proc arguments to method — itsme213@... (you CAN teach an old dog ...)
I was trying to write a collect_if method:
[#72988] Any notification mechanism for Ruby questions — itsme213@... (you CAN teach an old dog ...)
Is this the best place to post Ruby questions? Is ruby-talk better? Do
[#73032] raa-install feature request — "Dmitry V. Sabanin" <sdmitry@...>
Hello!
[#73047] dia2code-ruby-0.8.1 (unofficial) — "Dmitry V. Sabanin" <sdmitry@...>
Hi!
[#73081] requiring standard libs with save level 1 — Eugene Scripnik <Eugene.Scripnik@...>
I've set up new version of Ruby from CVS and my programs failed to work.
Hi,
Yukihiro Matsumoto wrote:
>>>>> "E" == Eugene Scripnik <Eugene.Scripnik@itgrp.net> writes:
ts wrote:
>>>>> "E" == Eugene Scripnik <Eugene.Scripnik@itgrp.net> writes:
ts wrote:
>>>>> "E" == Eugene Scripnik <Eugene.Scripnik@itgrp.net> writes:
ts wrote:
[#73119] Is Ruby's parse tree accessible (prior to evaluation) — itsme213@... (you CAN teach an old dog ...)
Is there any hook to get at the parsed-tree equivalent of Ruby
[#73134] tcltklib does not get compiled. — John Fletcher <J.P.Fletcher@...>
I have installed ruby 1.6.7 on two computers using Red Hat 8.0 Linux.
[#73148] OT: Regexp question — Dominik Werder <dwerder@...>
Hi all,
Hello Dominik,
--- Laurent Sansonetti <laurent@datarescue.be> wrote:
[#73169] how to contribute? — Koen Vervloesem <koen.vervloesem@...>
Hi,
[#73172] FAQ for comp.lang.ruby — hal9000@...
RUBY NEWSGROUP FAQ -- Welcome to comp.lang.ruby! (Revised 2003-1-7)
----- Original Message -----
[#73203] Re: raa-install: package list update? — "Hal E. Fulton" <hal9000@...>
----- Original Message -----
[#73215] Rubyx (provisionally named) linux distro. Made by and run by Ruby — Andrew Walrond <andrew@...>
I have developed a little script which creates a simple linux distro
il 11 Jun 2003 13:59:17 -0600, Eric Schwartz <emschwar@pobox.com> ha
on 6/11/03 4:35 PM, gabriele renzi at surrender_it@rc1.vip.lng.yahoo.com
[#73216] Re: Stack Frames, Functions and Variables. — "Robert Klemme" <bob.news@...>
The Wiki link is
[#73236] PDF Documents from Native Ruby — Austin Ziegler <austin@...>
So I'm about 1500 messages behind because I've been deep in programming
[#73238] fork and Tk problem — Richard Zidlicky <rz@...68k.org>
Hi,
[#73244] Re: Problem with "Daemon not connected" — "Veitch, Andy" <AVeitch@...>
[#73253] amrita question — Pierre Baillet <oct@...>
Hi,
[#73260] Multiple Initialize methods? — "Nick" <nick.robinson@...>
Hi,
Hi everybody,
On 6/19/2003 3:46 AM, in article
On Thu, Jun 19, 2003 at 09:43:19PM +0900, Sam Griffith wrote:
[#73283] Ruby advantages over Perl — Marek Janukowicz <childNOSPAM@...17.ds.pwr.wroc.pl>
In article <slrnbefclg.6r9.childNOSPAM@child.t9.ds.pwr.wroc.pl>,
> 3) any type of object can be used as a key in a Ruby hash (Perl can
----- Original Message -----
On Thu, 12 Jun 2003 17:56:02 +0900
Jason Creighton wrote:
On Jun 13, Tom Clarke wrote:
On Thu, 12 Jun 2003 22:46:46 +0100
[#73292] DATA object and processes; unexpected problem — Andrew Walrond <andrew@...>
I have have several forked processes simultateously accessing the data
[#73305] HTML -> list of sentences? (semi-impossible task) — "Hal E. Fulton" <hal9000@...>
Hello, all.
[#73339] ruby-dev summary #20316-20338 — TAKAHASHI Masayoshi <maki@...>
Hello all,
[#73356] does each work on a copy? — Rasputin <rasputin@...>
[#73365] socket problem on Windows? — "Craig Demyanovich" <demmer12@...>
Hello,
[#73372] Reason for implicit block syntax ? — itsme213@... (you CAN teach an old dog ...)
What is the reason for the implicit block in Ruby invocations?
[#73377] src/yaml.y.rb:210: warning: ambiguous first argument; make sure — ahoward <ahoward@...>
On Thursday 12 June 2003 01:23 pm, ahoward wrote:
[#73387] Regex: undocumented feature? — Joel VanderWerf <vjoel@...>
[#73394] How to get an exit code from SystemExit exception — "Gennady" <gfb@...>
I catch SystemExit exception raised as a result of "exit <status>" somewhere in the code. How do I get the <status> in my rescue?
[#73395] Question on regexp — John Johnson <jj5412@...>
While all the regexp experts have their ears perked up:
[#73403] Confused about to_s in Ruby / irb — itsme213@... (you CAN teach an old dog ...)
I wish to control the default display of my objects, and thought to_s
[#73420] Interactive Console Program with Tab-Completion — kapheine@... (Zachary P. Landau)
Hello,
[#73463] Hispeed String concat — Dominik Werder <dwerder@...>
What is the fastest way to add many small Strings to a big buffer?
Saluton!
[#73476] regex interpolation (in ruby from CVS) — mike@... (Mike Stok)
I have been experimenting with building regular expressions from
[#73484] Blogging Software Created with Ruby — info@... (Atlantic Blue)
Is there a blogging software created using the Ruby scripting
[#73503] RaaInstallInRuby petition — ptkwt@...1.aracnet.com (Phil Tomson)
In article <02e301c331e1$ab183980$0300a8c0@austin.rr.com>,
My $0.02:
[#73555] I need a code beautifier or formatter — joaopedrosa@... (Joao Pedrosa)
Hello,
On Sat, Jun 14, 2003 at 10:01:36PM +0900, Joao Pedrosa wrote:
On Sat, 14 Jun 2003, Michael Neumann wrote:
[#73567] Re: I need a code beautifier or formatter — Joao Pedrosa <joaopedrosa@...>
Hi,
"Joao Pedrosa" <joaopedrosa@myrealbox.com> wrote in message
[#73590] problems with regex.h in an extension module — Michael Brailsford <brailsmt@...>
I am working on embedding ruby into a C++ application but I cannot get
[#73600] Get songtitle from Winamp — calvin8@... (Andi Scharfstein)
Hi,
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It's a Win32API convention meaning "Window Handle".
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On Sunday 15 June 2003 9:34 am, Daniel Carrera wrote:
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You all know this already, but ...
on 6/15/03 12:47 PM, Yura at yura@opmr.com wrote:
[#73628] question on Struct and class_eval — Markus Jais <info@...>
Hello
[#73640] Standardizing Installers — Tom Clarke <tom@...2i.com>
I was thinking about some of the issues raised involving ruby libraries
On Mon, 16 Jun 2003 12:21:21 +0900
> So is it time to require that RAA packages conform to these rules?
[#73653] ParseExtension — nobu.nokada@...
Hi,
[#73663] /BEGIN/ .. /END/ file reading — Wild Karl-Heinz <kh.wild@...>
hello
> A range operator with a regexp works like a flip flop (bistable
On Mon, 2003-06-16 at 09:40, Michael Campbell wrote:
[#73667] Re: update Var if Var==nil — "Woodhouse, Mike (ANTS)" <mike.woodhouse@...>
Would
[#73680] Multiline comments? — "Christoph Tapler" <christoph.tapler@...>
I'm new to Ruby and I'm wondering that there is no possibility to write
----- Original Message -----
----- Original Message -----
[#73723] /^attr(?:_reader|_writer)*$/ - possible RCR? — ahoward <ahoward@...>
[#73756] File.expand_path with files beginnig with ~ (tilde) on Windoze — grzegorz@... (Grzegorz Chrupala)
Hi,
Grzegorz Chrupala wrote:
[#73773] Sokoban — Masao Mutoh <mutoh@...>
Hi,
[#73781] editor / ide recommentation on Windows — itsme213@... (you CAN teach an old dog ...)
What editor / ide would you recommend for serious Ruby work on
On Wed, 18 Jun 2003 01:45:11 +0900
On Sat, 21 Jun 2003 04:23:39 +0900, Warren Brian Noronha
> What would be really sweet is full refactoring Ruby support inside Eclipse...
[#73787] Array#push(empty array expanded) => no exception — "Simon Strandgaard" <0bz63fz3m1qt3001@...>
This strange behavier really surprised me..
[#73821] European Ruby Conference — "Hal E. Fulton" <hal9000@...>
I don't think I've mentioned this before, but I
Hal E. Fulton wrote:
I am trying to learn some of the functions within
Hi,
[#73831] Stability of Marshaling format — Robert Feldt <feldt@...>
Hi,
Hal E. Fulton <hal9000@hypermetrics.com> wrote:
[#73832] Re: Multiline comments? — "Pe, Botp" <botp@...>
Bernhard Weitzhofer [mailto:weitzhof@in.tum.de] wrote:
[#73841] Re: File.expand_path with files beginnig with ~ (tilde) on Windoze — "J.Hawkesworth" <J.Hawkesworth@...>
I've allways understood the ~ feature in some unix shells as being a
[#73843] re-open a class --> re-open a method? — itsme213@... (you CAN teach an old dog ...)
Ruby's ability to re-open a class is great! Among other things it
[#73844] switching multiple interfaces of an object — Mauricio Fern疣dez <batsman.geo@...>
On Wed, 18 Jun 2003, Mauricio [iso-8859-1] Fern疣dez wrote:
On Thu, Jun 19, 2003 at 12:35:12AM +0900, ahoward wrote:
[#73847] Tk canvas widget Id's — John Fletcher <J.P.Fletcher@...>
Is it possible to access the Id's of objects declared within a Tk canvas
[#73867] Re: Test::Unit GUI — "Berger, Daniel" <djberge@...>
> -----Original Message-----
Berger, Daniel [mailto:djberge@qwest.com] wrote:
nathaniel@NOSPAMtalbott.ws (nathaniel@NOSPAMtalbott.ws) wrote:
Gour [mailto:gour@mail.inet.hr] wrote:
[#73878] syck/yaml fail unit test — Guillaume Marcais <guillaume.marcais@...>
I get 2 failures with the unit tests within syck (0.35, from tarball).
[#73891] rb_protect and longjmp — "Sean O'Dell" <sean@...>
Looking for some insight about rb_protect and the longjmp calls.
[#73915] Thread Problems - Random Segfaults — Stefan Arentz <stefan.arentz@...>
[#73924] Re: TCP/IP protocol and Net::HTTP — "J.Hawkesworth" <J.Hawkesworth@...>
Works for me too.
I am beginning to wonder if this problem arises from the MacOS X
[#73941] Re: embed Ruby/TK app in a web page — "J.Hawkesworth" <J.Hawkesworth@...>
John,
[#73943] collect info about ruby-api — "Simon Strandgaard" <0bz63fz3m1qt3001@...>
I have long been longing for a good description of ruby C api.
[#73956] Weird Fixnum division — Tore Haug-Warberg <haugwarb@...>
Hi,
[#73974] How to install — Steve Tuckner <STUCKNER@...>
Recently, I downloaded eclipse for windows (version 2.1) and then got
[#73977] Production Code with Ruby — place4oracle@... (Warren)
Hi,
[#73991] rescuing errors.. catch-all — Daniel Bretoi <lists@...>
Hi,
Hi,
On Fri, Jun 20, 2003 at 09:56:04AM +0900, Yukihiro Matsumoto wrote:
[#73997] reading ruby source — "Shashank Date" <sdate@...>
I'm making a serious attempt to read and understand the C-source which
[#74006] In 1.8.0 nil.to_s is not the same as "" — han.holl@... (Han Holl)
Hi,
Hi,
[#74039] WxRuby status? — ptkwt@...1.aracnet.com (Phil Tomson)
Things are progressing great. Kevin Smith has taken the development
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Daniel Carrera (dcarrera@math.umd.edu) wrote:
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[#74045] Re: require xyz: How to set search path? URI-like ability? — "Tim Hunter" <cyclists@...>
On Fri, 20 Jun 2003 23:11:56 +0000, Its Me wrote:
[#74068] Re: reading text line — "Shashank Date" <sdate@...>
"Dan" <falseflyboy@yahoo.comNONO> wrote in message
[#74070] How to test if a file exists? — Daniel Carrera <dcarrera@...>
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Daniel Carrera wrote:
> In an ideal world, I suppose I should follow my way up the inheritance
[#74081] Euruko 2003 (1st European Ruby Conference) news — Mauricio Fern疣dez <batsman.geo@...>
[#74096] Exasperated with ruby/tk - anybody successfully using it? — "Richard Browne" <richb@...>
General question: Is ruby/tk still being maintained in 1.7/1.8 or is it
[#74104] String#decorate — martindemello@... (Martin DeMello)
When chaining methods, it'd be neat to have something that was passed
[#74129] REXML and double, rather than single quotes — Ian Macdonald <ian@...>
Hi,
[#74133] unit testing — Koen Vervloesem <koen.vervloesem@...>
Hi,
[#74139] Euruko 2003 (1st European Ruby Conference) Over — Mauricio Fern疣dez <batsman.geo@...>
[#74156] Marshal bug? — Anders Borch <spam@...>
Hi!
Anders Borch wrote:
--- Dave Thomas <dave@pragprog.com> wrote:
Hello everyone;
On Mon, Jun 23, 2003 at 11:12:01PM +0900, David D'Andrea wrote:
Appreciate the pointer, pretty ug primitive mistake there.
[#74157] File upload and mod-ruby — gm@... (George Moschovitis)
Hello everybody,
[#74189] Array#unshift() zero arguments — "Simon Strandgaard" <0bz63fz3m1qt3001@...>
[#74198] Parallel Assignment # a,b=c,d=1,2 — D T <tran55555@...>
We can write:
OK, I guess:
Hi,
[#74202] Block Scope Statement in the Pickaxe — "Robert Klemme" <bob.news@...>
[#74205] can't find appropriate regexp — "Patrick Zesar" <jonnypichler@...>
spamassassin blocked my previous post :-((((
I got wrong again, finally, I test and test and come out this one:
> str = <<'EOF'
You are welcome.
[#74206] Standard type conversion mechanism — Ryan Pavlik <rpav@...>
OK, I'm posting this because a few people on #ruby-lang thought it
[#74208] Problem with local DRb on OS X — John Platte <john.platte@...>
Rubyers & rubyees:
[#74237] ncurses-ruby on cygwin — culley harrelson <culley@...>
I am trying to install ncurses-ruby on cygwin, which all the docs
On 24 Jun 2003, culley harrelson wrote:
[#74239] Warning error in YAML — "Useko Netsumi" <REMOVE_THISusenets@...>
test_yaml.rb:
>>>>> "U" == Useko Netsumi <REMOVE_THISusenets@nyc.rr.com> writes:
[#74254] Re: Decimal builtin? — "Pe, Botp" <botp@...>
[#74279] Ruby Developer's Guide - hurt book sale — dennis@... (Dennis Sutch)
Syngress Publishing is having a hurt book sale. Per Syngress
On 24 Jun 2003, at 22:28, Dennis Sutch wrote:
I never understood why shipping from the USA is so extrem expensive.
[#74296] Concatenating Hash's — David Landrith <dlandrith@...>
What is the fastest way to concatenate two hash tables?
--- David Landrith <dlandrith@mac.com> wrote:
[#74305] ruby 1.8.0-preview3 build errors — Aredridel <aredridel@...>
I get this:
Hi,
[#74320] Another Run Time Evaluation Q: — "Orion Hunter" <orion2480@...>
I am fiddling around with the eval() function, and loading information at
[#74347] help needed: extending ruby — "Shashank Date" <sdate@...>
I'm trying out the following example from
[#74355] another problem with regular expression — "Rob" <robson@...>
I have an array with the following elements:
[#74379] protect parents from children — "Simon Strandgaard" <0bz63fz3m1qt3001@...>
I fell into these pitfalls yesterday.. that a child was modifying a parent!
[#74394] Text parsing example code — Dominik Werder <dwerder@...>
Hi rubyists,
[#74413] Ruby/Java integration through JNI: working implementation — Mauricio Fern疣dez <batsman.geo@...>
Yet An other JRuby ?? :-)
D T wrote:
[#74454] API for Ruby/Java integration through JNI (feedback needed!) — Mauricio Fern疣dez <batsman.geo@...>
il Thu, 26 Jun 2003 03:34:10 +0900, Mauricio Fern疣dez
[#74465] DBD for Oracle9i — Jim Cain <list@...>
Hi all. I was looking for a Ruby interface to 9i that would handle all
Jim Cain wrote:
Michael Neumann <mneumann@ntecs.de> writes:
KUBO Takehiro wrote:
Jim Cain <list@jimcain.us> writes:
KUBO Takehiro wrote:
Michael Neumann wrote:
[#74478] RPM for 1.8.0 — John Carter <john.carter@...>
I would like to get / build a Mandrake 9.1 RPM for Ruby-1.8.0 Preview 3
On Wed, 2003-06-25 at 19:44, John Carter wrote:
Aredridel's .spec file was a good start. It seems to be a RedHat rather
Hi,
Removing the --enable-shared stops the following crash...
[#74506] String#split(' ') and whitespace (perl user's surprise) — mike@... (Mike Stok)
I have to confess that I use a lot of Perl, and some of its idioms are
In article <200306260741.40418.wjl@icecavern.net>,
Bug ? May-be / Maybe not ...
On Thursday 26 June 2003 8:57 am, D T wrote:
> I think you want strip instead of squeeze:
On Thursday 26 June 2003 6:14 am, Mike Stok wrote:
>>>>> "W" == Wesley J Landaker <wjl@icecavern.net> writes:
[#74566] Who's going to OSCON? — ptkwt@...1.aracnet.com (Phil Tomson)
OK, OSCON is coming up in a couple of weeks and I'd like to figure out if
[#74573] Using & for arrays of objects — "Krishna Dole" <kpdole@...>
Hi,
[#74575] Is there a Unit test tool distributed with 1.6? — gsemones@... (Guerry Semones)
I know there are several unit test tools (runit, lapidary, etc.) that
[#74579] why can't I use $3somevar for global variable in ruby 1.8.0? — Donglai Gong <donglai@...>
Hi, I'm new to Ruby programming and I just upgraded from 1.6.8 to 1.8.0
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Hi,
There must be a reason why $1ve is disallowed in 1.8.0 but I can't
[#74587] method overloading? — Donglai Gong <donglai@...>
Is there a way to implement method overloading in ruby? Naively I just
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[#74620] \s in regex — internetletter@... (s moon)
what I want is to remove beginning and trailing spaces from lines.
[#74651] Re: problem install 1.6.8/1.8 on OS X 10.2 - success — Gary.Palmer@...
[#74667] Opinions on ZigZag? — "Hal E. Fulton" <hal9000@...>
I've been reading about ZigZag again... in some
[#74685] MR PATRICK LOUCO — "PATRICK LOUCO" <patkiceloco@...>
Dear Friend,
[#74690] druby vs CORBA vs java-RMI — gabriele renzi <surrender_it@...1.vip.lng.yahoo.com>
Is there some paper (possibly in english) somewhere about a comparison
[#74691] Swig and the STL — Michael Brailsford <brailsmt@...>
I am having troubles with swig's conversion of STL to ruby. Mainly ruby
[#74702] Slides from my talk are up on rubyhacker.com — "Hal E. Fulton" <hal9000@...>
I was pleased to attend the European Ruby Conference
----- Original Message -----
On Sat, Jul 05, 2003 at 03:50:02PM +0900, Hal E. Fulton wrote:
[#74706] Help with UnboundMethod#bind error — gabriele renzi <surrender_it@...1.vip.lng.yahoo.com>
Hi gurus and nubys,
Hi,
Hi,
On 30 Jun 2003 at 17:18, Yukihiro Matsumoto wrote:
Hi,
On 2 Jul 2003 at 17:14, nobu.nokada@softhome.net wrote:
>>>>> "P" == Pit Capitain <pit@capitain.de> writes:
On 5 Jul 2003 at 20:45, ts wrote:
>>>>> "P" == Pit Capitain <pit@capitain.de> writes:
On 6 Jul 2003 at 21:23, ts wrote:
On Sun, Jul 06, 2003 at 11:51:04PM +0900, Pit Capitain wrote:
[#74717] Re: Message catalogs (I18N) overnight hack... — "Hal E. Fulton" <hal9000@...>
----- Original Message -----
----- Original Message -----
[#74724] ruby tutorial — "Pe, Botp" <botp@...>
Hi Friends,
[#74730] Memory behavior of String#dup — "Robert Klemme" <bob.news@...>
[#74731] OT: Status Display — Juergen Lang <j-l@...>
Hello,
[#74747] Editor like Textpad on Linux? — Dominik Werder <dwerder@...>
Hello,
[#74768] dynamic object creation — Aryeh Friedman <aryeh@...>
If I have something like this:
On Tue, Jul 01, 2003 at 01:01:25AM +0900, Aryeh Friedman wrote:
[#74781] Re: Does Threading work properly? — kingsley@...
Hiya
Re: Confused about to_s in Ruby / irb
----- Original Message -----
From: "Shashank Date" <sdate@everestkc.net>
Newsgroups: comp.lang.ruby
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Thursday, June 12, 2003 10:48 PM
Subject: Re: Confused about to_s in Ruby / irb
>
> "Hal E. Fulton" <hal9000@hypermetrics.com> wrote in message
> > The to_str method is used when an objects wants to "masquerade"
> > as a string.
>
> Meaning ?
>
> > One common difference is that the latter will
> > typically preserve all information, whereas the
> > former may only present enough to render the object
> > in a printable form. (At least I think I've seen
> > that distinction somewhere.)
>
> Forgive me for being dense. Can you please explain this more ?
> Maybe with an example ? All I have is a reference from PickAxe:
You're not dense. I still find it highly non-obvious.
All I know about this I learned from Dave Thomas.
I think I can get away with quoting this much of _The
Ruby Way_, chapter 5. See below. Just don't tell the
l-a-w-y-e-r-s.
Cheers,
Hal
========================================================
Sometimes an object comes in exactly the right form at the right time, but
sometimes we need to convert it to something else or pretend it's something
it isn't. A good example is the well-known to_s method.
Every object can be converted in some fashion to a string representation.
But not every object can successfully masquerade as a string. That in
essence is the difference between the to_s and to_str methods. Let's
elaborate on that.
Methods such as puts and contexts such as #{...} interpolation in strings
expect to receive a String as a parameter. If they do not, they ask the
object they did receive to convert itself to a String by sending it a to_s
message. This is where you get to specify how your object will appear when
displayed; simply implement a to_s method in your class that returns an
appropriate String.
class Pet
def initialize(name)
@name = name
end
# ...
def to_s
"Pet: #@name"
end
end
Other methods (such as the String concatenation operator +) are more picky;
they expect you to pass in something that is really pretty close to a
String. In this case, Matz decided not to have the interpreter call to_s to
convert non-string arguments, as he felt this would lead to too many errors.
Instead, the interpreter invokes a stricter method, to_str. Of the built-in
classes, only String and Exception implement to_str, and only String,
Regexp, and Marshal call it. Typically when you see the runtime error
TypeError: Failed to convert xyz into String, you know that the interpreter
tried to invoke to_str and failed.
You can implement to_str yourself. For example, you might want to allow
numbers to be concatenated to strings:
class Numeric
def to_str
to_s
end
end
label = "Number " + 9 # "Number 9"