[#376260] On Mac: File.file? behaves strangely — Ronald Fischer <rovf_via_ruby_forum@...>
Or, rather, I probably just made a silly mistake which I can't see
[#376274] Best Linux Distro for Ruby? — Nick Hird <boondox@...>
What are some of the better linux distro's for ruby development? I know
I think Ubuntu is a little confusing to new Ruby developers. I
On Jan 9, 10:10=A0pm, "Jon W." <django...@gmail.com> wrote:
Gentoo is good choice. I install ruby 1.9.2 from source code.
[#376277] 1.respond_to? :define_singleton_method # => true — timr <timrandg@...>
In 1.9,
[#376285] Problem with LOAD_PATH after gem update — Len Lawrence <lcl@...>
Mandriva 2010.1, ruby 1.8.7, gem 1.4.1
[#376310] Validates is exists — "Jose tomas R." <jtomasrl@...>
Event has_and_belongs_to_many :users
[#376329] Is singleton class of an object already created? — Samnang Chhun <samnang.chhun@...>
I would like to know is there any ways to check is singleton class of an
Could you simply count singleton_methods? If singleton_methods returns
[#376333] Threading in ruby — "Vishnu I." <pathsny@...>
Hi
On Tue, Jan 4, 2011 at 8:41 AM, Vishnu I. <pathsny@gmail.com> wrote:
Robert Klemme wrote in post #972187:
On Tue, Jan 4, 2011 at 10:53 AM, Vishnu I. <pathsny@gmail.com> wrote:
Hi Robert
On Thu, Jan 6, 2011 at 10:23 AM, Vishnu I. <pathsny@gmail.com> wrote:
[#376339] ripl - an irb alternative - 0.3.0 released — ghorner <gabriel.horner@...>
ripl, a light modular alternative to irb, has reached 0.3.0. ripl
Am 04.01.2011 14:55, schrieb ghorner:
On Jan 5, 10:55=A0am, Michal Suchanek <hramr...@centrum.cz> wrote:
On 6 January 2011 02:10, ghorner <gabriel.horner@gmail.com> wrote:
On Jan 7, 5:18=A0am, Michal Suchanek <hramr...@centrum.cz> wrote:
On 8 January 2011 06:10, ghorner <gabriel.horner@gmail.com> wrote:
[#376373] mixin technique overrides variables — "Konrad K." <konrad.krol89@...>
Take a look at code bellow:
[#376375] Rubygems, RVM and Bundler Confustion — lucky Developer <lakshmanan@...>
I am really confused with how these three (rubygems, rvm and bundler)
[#376382] Class Initialization? — Kedar Mhaswade <kedar.mhaswade@...>
I have a class and two class methods: self.encode and self.decode. The
On Wed, Jan 5, 2011 at 9:33 AM, Kedar Mhaswade <kedar.mhaswade@gmail.com>wrote:
Robert, Andrew,
On Wed, Jan 5, 2011 at 12:18 PM, Kedar Mhaswade <kedar.mhaswade@gmail.com>wrote:
Andrew Wagner wrote in post #972567:
[#376388] Petition to add Metasploit Project as Ruby success story — Christian Kirsch <Christian_Kirsch@...7.com>
I noticed the Ruby success stories on the Ruby website. I would like to mak=
On Jan 5, 2011, at 8:52 AM, Christian Kirsch wrote:
Hi James,=20
On Jan 5, 2011, at 12:06 PM, Christian Kirsch wrote:
Hi James,=20
On Jan 5, 2011, at 1:40 PM, Christian Kirsch wrote:
[#376394] How to view the converted sql from Activerecord method in view — Arun Kumar <jakheart001@...>
Hi All,
[#376396] Getting the actual size of a sparse file — Daniel Berger <djberg96@...>
Hi,
[#376428] Execute Ruby code after Gem is installed — Bryan Richardson <btrichardson@...>
Hello All,
[#376452] ruby method definition — Rail Shafigulin <rail.shafigulin@...>
i'm somewhat new to ruby, and as it seems this language is redefining
2011/1/6 Rail Shafigulin <rail.shafigulin@gmail.com>:
[#376453] Block variable - How is it read in English? — SW Engineer <abder.rahman.ali@...>
Following the "Ruby on Rails Tutorial", and under section "6.1.1
I would have thought this discussion is symptomatic of a lot of Rails
[#376458] From UTF-8 to windows-1252 — "Noé Alejandro Castro Sánchez" <casanejo@...>
Hello.
[#376491] String#% is not working on Ruby 1.8.7 — Vikrant Chaudhary <nasa42@...>
To reproduce, I just copied the example right from ruby-doc
On Fri, Jan 7, 2011 at 1:02 AM, Vikrant Chaudhary <nasa42@gmail.com> wrote:
On Fri, Jan 7, 2011 at 12:23 AM, Josh Cheek <josh.cheek@gmail.com> wrote:
[#376499] proctable library bad install — Roman Mandeleil <roman.mandeleil@...>
Hi,
2011/1/7 Roman Mandeleil <roman.mandeleil@gmail.com>:
zimbatm ... wrote in post #973161:
[#376503] More gems than CPAN modules? — Robert Klemme <shortcutter@...>
Hi,
[#376511] Is there any chance of getting the oniguruma patch into ruby 1.8.6 for windows — Zeno Davatz <zdavatz@...>
Hi
[#376515] Help with RubyGems — Institute For human continuity <misplaced.muse@...>
I am new to Ruby and programming, so please bear with me.
[#376526] File Dialog Box — Christopher Howard <christopher.howard@...>
I'm writing some scripts that do most everything from the command-line.
[#376550] Regarding the Versioning of Ruby — Su Zhang <zhangsu@...>
There are versions of ruby such as -
[#376552] file list sorted by creation date — Rajarshi Chakravarty <raj_plays@...>
Hi,
[#376574] Best way for Array#find+transform ? — "Jonas Pfenniger (zimbatm)" <jonas@...>
There is a pattern that I'm using quite regularly, but I'm not
> I know I can come up with a new method on Array that would shorten this t=
> paths.map{|path| File.join(path, filename)}.select{|name| File.exist?(path)}
2011/1/8 Anurag Priyam <anurag08priyam@gmail.com>:
Excerpts from Jonas Pfenniger (zimbatm)'s message of Sat Jan 08 16:05:05 -0800 2011:
2011/1/9 David J. Hamilton <groups@hjdivad.com>:
Excerpts from Jonas Pfenniger (zimbatm)'s message of Sun Jan 09 04:08:10 -0800 2011:
2011/1/10 David J. Hamilton <groups@hjdivad.com>:
On Mon, Jan 10, 2011 at 11:14 PM, Jonas Pfenniger (zimbatm)
Excerpts from botp's message of Mon Jan 10 18:48:14 -0800 2011:
On Tue, Jan 11, 2011 at 2:49 PM, David J. Hamilton <groups@hjdivad.com> wro=
Excerpts from botp's message of Tue Jan 11 08:02:45 -0800 2011:
[#376583] Draw Line chart — Fan Jin <jeff_yq@...>
Hi:
Hi,
I know I'll get hate mail as soon as I press Submit but don't ignore the
[#376598] Confusion regarding boolean operators. — Kedar Mhaswade <kedar.mhaswade@...>
Apologies if this has been asked before (I tried to search).
[#376599] Programming exercises — serialhex <serialhex@...>
Hi, I was wondering if anyone knows any good programming
[#376611] RDoc and encoding — Claus Folke Brobak <cfb@...>
Hi,
[#376627] quickl 0.2.0 Released — Bernard Lambeau <blambeau@...>
quickl version 0.2.0 has been released !
[#376629] noe 1.0.0 Released! — Bernard Lambeau <blambeau@...>
noe version 1.0.0 has been released !
[#376665] Finding best way to pretty print XML files — "Pk Z." <k@...>
Havn't found best soultion to pretty print XML:
[#376680] Parallel Assignments and Elegance/Complexity Ratio. — Kedar Mhaswade <kedar.mhaswade@...>
In SICP, I read that "Programs should be written for people to read, and
On Tue, Jan 11, 2011 at 3:29 PM, Kedar Mhaswade
On Tue, Jan 11, 2011 at 8:29 AM, Kedar Mhaswade <kedar.mhaswade@gmail.com>wrote:
> literals, you would, of course, use the equivalent way, but if your data
On Tue, Jan 11, 2011 at 3:30 PM, Robert Klemme
On Wed, Jan 12, 2011 at 10:44 AM, Colin Bartlett
[#376682] JRuby 1.6.0.RC1 released — Thomas E Enebo <tom.enebo@...>
The JRuby community is pleased to announce the release of JRuby 1.6.0.RC1.
Stu wrote:
On Tue, Jan 11, 2011 at 4:04 PM, Thomas E Enebo <tom.enebo@gmail.com> wrote=
On Tue, Jan 11, 2011 at 9:59 AM, Robert Klemme
[#376703] Read csv file. Beginner's HELP!! — Kamarulnizam Rahim <niezam54@...>
Hai,
[#376707] Ruby 1.9.2-p0: segmenfault in multithreading when using a custom C extension — Iñaki Baz Castillo <ibc@...>
Hi, I've coded a SIP protocol parser (very close to the Ragel HTTP
2011/1/11 I=C3=B1aki Baz Castillo <ibc@aliax.net>:
2011/1/12 I=C3=B1aki Baz Castillo <ibc@aliax.net>:
2011/1/12 I=C3=B1aki Baz Castillo <ibc@aliax.net>:
2011/1/12 I=C3=B1aki Baz Castillo <ibc@aliax.net>:
[#376713] :: -- operator or not? — Kedar Mhaswade <kedar.mhaswade@...>
::
[#376719] Read .csv file. Cant obtain data — Kamarulnizam Rahim <niezam54@...>
Here is the code i use:
[#376744] Case statements - Just beautification — flebber <flebber.crue@...>
I just want to clarify case statements the name after the word case is
[#376755] minitest --name regexp troubles — Suraj Kurapati <sunaku@...>
Hello,
[#376764] String.strip with UTF-8 — "Erik E." <erik.eide@...>
Hi
Erik E. wrote in post #974416:
[#376765] random orc game — Steve Rees <stevoreesimo@...>
I am learning, slowly, how to use ruby.
[#376779] Threaded Socket communication problem. — Dominic Gatzen <dominic.gatzen@...>
Hi all.
[#376785] simple name of a class? — Kedar Mhaswade <kedar.mhaswade@...>
The name method of class Class returns the full name of a class (e.g.
[#376788] Weird error using String#[] — Jason Mcdonald <finn0013@...>
Please check out the attached file. I am writing a script to notify me
[#376792] Ruby is interpreted and scripting language? — Sai Babu <sateesh.mca09@...>
I am ruby fresher.
2011/1/13 Sai Babu <sateesh.mca09@gmail.com>:
As I see it, a language that is interpreted utilizes a middle-man to make
Sai Babu <sateesh.mca09@gmail.com> wrote:
My personal definition of a compiled language is one that is outputted
[#376797] improvements on mixins — Joseph Lenton <jl235@...>
I'm currently building a Ruby-like language, heavily influenced by Ruby.
> If you do that, it would be nice if you could register any number of
[#376803] What is the difference between inject and reduce methods — Edmond Kachale <edmond.kachale@...>
Rubysters,
On Thu, Jan 13, 2011 at 1:59 AM, Edmond Kachale <
[#376808] Embedding Ruby Interpreter + RUBYGEMS — Christoph Müller <ruunhb@...>
Hello everybody,
[#376816] Thread Variable race condition — Karan Rajput <ganeshgirase@...>
Hi,
[#376818] Why {} is much faster than Hash.new ? — Iñaki Baz Castillo <ibc@...>
Hi, a simple benchmark:
[#376831] Setting the Excel workbook name through my Ruby Code. — Ankit Gupta <ankit.gupta8898@...>
Hi all,
Hi Ankit,
[#376855] Retrieving and copying element from array — Simon Harrison <simon@...>
If I have an array like this:
[#376858] Ruby without Tcl/Tk. — Glen Johnson <gjohnson@...>
Ruby-talk subscribers,
[#376860] Reading a CSV file with UTF-16LE encoding — Daniel de Angelis Cordeiro <dcordeiro@...>
Hy all,
[#376889] Best practice to require external code dependency ? — Bernard Lambeau <blambeau@...>
Hi Rubyist,
[#376898] What are your ruby rough cuts ? — "Jonas Pfenniger (zimbatm)" <jonas@...>
Hi rubyists,
On Friday, January 14, 2011 07:34:04 am Jonas Pfenniger (zimbatm) wrote:
David Masover wrote in post #975080:
On Saturday, January 15, 2011 04:42:58 am Joseph Lenton wrote:
On Sat, Jan 15, 2011 at 3:45 PM, David Masover <ninja@slaphack.com> wrote:
On Sat, Jan 15, 2011 at 2:59 PM, Tony Arcieri <tony.arcieri@medioh.com> wrote:
On Sat, Jan 15, 2011 at 5:34 PM, Christopher Dicely <cmdicely@gmail.com>wrote:
On Sat, Jan 15, 2011 at 4:45 PM, David Masover <ninja@slaphack.com> wrote:
Here are a few things I can think of:
[#376902] Ruby iterative depth. — Marcello Henrique <faraohh@...>
Hello,
[#376916] array dynamic intersection and union — Jamal Soueidan <jamal@...>
Hello,
[#376949] what's the difference between these two snippets of ruby? — "Mr. Bill" <mrbillhaxor@...>
Sorry I couldn't help the line wrapping. Thanks in advance.
[#376955] Dealing with TimeZones — "Thomas A. Moulton" <tom@...>
What is the easies to use package for dealing with time zones and DST
Hi Thomas,
[#376956] Find memory leak in 1.9 app — Julien Schmurfy <schmurfy@...>
Hello,
[#376983] Current class — Josh Cheek <josh.cheek@...>
Going through Metaprogramming Ruby, and the author, Paolo Perrotta points
[#376986] New String rules? — "felix.leg" <felix.leg@...>
I have just updated my Ruby into 1.9.0, and tried to run one of my
[#376996] Problem populating a hash with regex results — RichardOnRails <RichardDummyMailbox58407@...>
Hi,
[#377007] A tad of meta-programming needed — RichardOnRails <RichardDummyMailbox58407@...>
I've got the following hash set up and it works fine. But this took
[#377008] Why Ruby Does Not Support Method Overloading? — Peter Pk <rubyonrails37@...>
Hi Sir's,
[#377020] Obscure syntax error — Rolf Timmermans <molfie@...>
Hi all,
The format
On 17 January 2011 22:35, Ryan Davis <ryand-ruby@zenspider.com> wrote:
[#377040] initialize() in a module, is it correct? — Iñaki Baz Castillo <ibc@...>
Hi, for some exotic reason I need to define initialize() method in a
On Mon, Jan 17, 2011 at 6:51 PM, I=F1aki Baz Castillo <ibc@aliax.net> wrote=
[#377048] Add value inside 'Nested Mappings String' — Kamarulnizam Rahim <niezam54@...>
Hi,
[#377052] Calling by Reference - Two Questions — Mike Stephens <rubfor@...>
I know I'm not the first person to get stumped by how to get Ruby to
On Mon, Jan 17, 2011 at 6:07 PM, Mike Stephens <rubfor@recitel.net> wrote:
Josh Cheek wrote
On Tue, Jan 18, 2011 at 2:06 PM, Mike Stephens <rubfor@recitel.net> wrote:
[#377072] The most recommended way of naming methods in Ruby — Edmond Kachale <edmond.kachale@...>
Rubists,
On Tue, Jan 18, 2011 at 9:16 AM, Edmond Kachale
> - Interrogative methods get phrased as questions:
On Tue, Jan 18, 2011 at 5:21 PM, Shadowfirebird
[#377097] Books and/or Tutorials — Karch <dimeneira@...>
Hello Fellow Ruby Users!
[#377121] Improving performance of hash math — dblock <dblockdotorg@...>
I am trying to improve performance of Euclidian distance between two
[#377148] local copy of rubyforge — CraftyTech <hmmedina@...>
Hello All,
[#377159] Each roll-over in File? — Don Wilde <dwilde1@...>
fellow, Rubyists:
[#377167] Unsupported digest algorithm (sha256). — yf kuanfai <kuanfai_yf@...>
Hi,
Hi,
[#377173] How to reference a different epoch. — Phil Henley <dantes990@...>
I'm trying to use the 'at' method in Time on some data pulled from an
[#377183] sorting songs to directories — Mikhail Slyusarev <slyusarevmikhail@...>
I've got a bunch of music that is in one directory and I wanted to sort
[#377185] Array within array question — Josh Rowe <joshua@...>
Hello everyone, this is my first post on this forum and I'm quite new to
[#377208] help on find over find — Mauricio Alcayaga <gusantor@...>
hi all
On Jan 20, 4:05=A0pm, Mauricio Alcayaga <gusan...@hotmail.com> wrote:
[#377213] Deleting from hashes — Josh Rowe <joshua@...>
Hi all!
[#377226] Totally lost in learning Ruby — Hilary Bailey <my77elephants@...>
This is my second attempt to understand Ruby. I completely read 1)
On Friday 21 January 2011 19:13:47 Hilary Bailey wrote:
Stefano Crocco wrote in post #976481:
On Saturday, January 22, 2011 10:44:56 pm Hilary Bailey wrote:
David Masover wrote in post #976879:
Hilary Bailey wrote in post #976477:
Hi David,
Hi Mike,
Based on the responses received I am leaned toward the following study =
Hi everybody,
On Tue, Feb 8, 2011 at 3:16 AM, Hilary Bailey <my77elephants@gmail.com> wro=
Robert Klemme wrote in post #980210:
On Tue, Feb 8, 2011 at 5:11 PM, Hilary Bailey <my77elephants@gmail.com> wrote:
Robert Klemme wrote in post #980520:
[#377235] execution expired - timeout — "Luis G." <l17339@...>
Hello guys.
[#377236] using gems installed via 'sudo gem install' — "Piotr S." <thisredoned@...>
I've installed ruby-opengl through sudo gem install because there were
[#377244] Spreadsheet -0.6.5.1 "invalid encoding" Problem — Tadeusz Bochan <tad.bochan@...>
Hi,
[#377260] Using net/HTTP - How to login and then retrieve data? — "Bob C." <rgc3679@...>
I'm new to Ruby, coming from Java. I need to write an HTTP client in
[#377268] Lexical vs Dynamic Scope — Tim Morgan <tim@...>
Forgive this very basic question, but Googling has not answered my
[#377272] swig and ruby — Alessandro Barracco <bomastudio@...>
Hi all, does anyone use swig to bind to C/C++ library? I would like to
[#377300] FastCSV fcsv and how to keep imported field format (or how to convert it) — Dot Baiki <dot_baiki@...>
Dear Community,
On Jan 23, 2011, at 5:47 AM, Dot Baiki wrote:
[#377304] Enumerable.inject_with_index? — redstun <redstun@...>
Enumerable.inject is pretty cool, but it treat the elements as if they have
On Sun, Jan 23, 2011 at 10:31 PM, redstun <redstun@gmail.com> wrote:
On Sun, Jan 23, 2011 at 11:00 PM, botp <botpena@gmail.com> wrote:
Cool! thanks!
[#377312] Help! Please, I'm lost! — Dark Haukka <lord_dark_haukka@...>
Well, I'm a spanish user, so I'm sorry if my English isn't good
[#377323] How to convert letters to uppercase? — Richard Sandoval <skolopen@...>
Im unfamiliar with regular expressions.
[#377335] Obtain 'CSV' data — Kamarulnizam Rahim <niezam54@...>
Hi guys,
[#377343] reverse engineering: "property[name=steps] > array" — Dan Thomas <danthom1000@...>
Hi,
[#377352] class_eval — Lorenzo Brito Morales <lorenzo.brito@...>
I cant not understand why these code is well
[#377362] pg gem 0.10.1 wth Ruby 1.9.2 does not work with method @pg_conn.exec_prepared(stmt_name, parameters) — Zeno Davatz <zdavatz@...>
Hi
[#377384] FileUtils writing to stderr — "Mark L." <marcuslamb@...>
Hi there,
[#377388] The finer points of postfix conditionals. — Jon Leighton <j@...>
Hi,
Thanks for the explanation. FWIW I think it is a shame that postfix
On Mon, Jan 24, 2011 at 7:18 PM, Jon Leighton <j@jonathanleighton.com> wrote:
Robert Klemme wrote in post #977336:
On Tue, Jan 25, 2011 at 7:09 PM, Jon Leighton <j@jonathanleighton.com> wrote:
On Mon, Jan 24, 2011 at 3:22 PM, Jon Leighton <j@jonathanleighton.com> wrot=
[#377399] Worker pool - what to use? — "Christoph B." <ch.blank@...>
Hey,
[#377411] Obtain data from .csv — Kamarulnizam Rahim <niezam54@...>
Sample of .csv file:
[#377413] Surely there's a better way to do this... (implementing a DSL) — Tony Arcieri <tony.arcieri@...>
I'm trying to write a method that builds a class and takes arguments from
On Tue, Jan 25, 2011 at 4:10 AM, Tony Arcieri <tony.arcieri@medioh.com> wro=
[#377427] Add new value to top of an Array — "Sam T." <samtreweek@...>
Hi, Does anyone know how to add a new value to the top of an array,
[#377440] module_function and Object include. — Kedar Mhaswade <kedar.mhaswade@...>
I understand that the use of the Module's class method "module_function"
[#377461] Newbie moving from other language - simple inline Rails conditional — Peter D Bethke <peter.bethke@...>
Hi All,
[#377469] IO from text file — Michael Litton <macentricruby@...>
Info:
[#377472] to use AR or not? — Jason Cameron <cameronjc2000@...>
Hmmm I've been scratching my head at this for a little while and maybe
[#377476] writing on yaml file — Kamarulnizam Rahim <niezam54@...>
Hi guys,
[#377489] midiator 0.4.0 Released — Ben Bleything <ben@...>
midiator version 0.4.0 has been released!
On Wed, Jan 26, 2011 at 10:55 AM, Ben Bleything <ben@bleything.net> wrote:
On Tue, Jan 25, 2011 at 9:57 PM, botp <botpena@gmail.com> wrote:
Am 26.01.2011 07:13, schrieb Ben Bleything:
On Wed, Jan 26, 2011 at 5:48 AM, Quintus <sutniuq@gmx.net> wrote:
On Thu, Jan 27, 2011 at 12:12 AM, Ben Bleything <ben@bleything.net> wrote:
[#377510] Rails: Problem with test-environment and mysql2 database — vivec manavortex <ilikerubies@...>
Hi list,
[#377523] Coercion in Ruby — zdennis <zach.dennis@...>
A fellow rubyist, Zach Church, wrote a great article on coercion in
Just a small nitpick:
[#377527] Issues with Time.parse — Jens Finnäs <jens.finnas@...>
Hi,
[#377535] link to .erb file, from .erb file — Dan Thomas <danthom1000@...>
Hello,
[#377554] rhtml and apache trouble — Mitul Ti <mitultiwari@...>
I am trying to run embedded ruby inside rhtml.
[#377558] how to build gem whose dependencies depend of the platform? — Jarmo Pertman <jarmo.p@...>
Hi!
[#377574] Adding contents on yaml file without overwriting actual contents — Kamarulnizam Rahim <niezam54@...>
Hi,
[#377600] which Ruby is in use? — Hassan Schroeder <hassan.schroeder@...>
How can I tell from within a running program which interpreter is being
RUBY_DESCRIPTION will give you something like this:
[#377603] Modules acting up after relocating code — Walle Wallen <walle.sthlm@...>
Hello,
[#377608] performance question — klochner <klochner@...>
sorry for the cross-post from RoR, but I actually think this is more
On Jan 27, 11:37=A0am, Chuck Remes <cremes.devl...@mac.com> wrote:
[#377609] why is overloading invalid in ruby. — Ted Flethuseo <flethuseo@...>
I don't understand why when I try to overload I get an error. Can I
On Thu, Jan 27, 2011 at 11:22 AM, Ted Flethuseo <flethuseo@gmail.com> wrote:
On Thu, Jan 27, 2011 at 8:48 PM, Ben Bleything <ben@bleything.net> wrote:
On Friday 28 January 2011 04:22:47 Ted Flethuseo wrote:
Ah that's too bad... I knew I could put some default values for x and y
Adam Prescott wrote:
So far I don't believe I've heard anyone make the obvious case against method overloading -- that unless done very carefully indeed, it makes the code much, much more difficult to read. One method does one job is the sane way to go, thanks.
On Mon, Jan 31, 2011 at 9:00 AM, Gary Wright <gwtmp01@mac.com> wrote:
[#377623] HELP! New to Ruby and need to debug for work! Chomp! Error — Doug Blackman <wdblackman@...>
Hi,
Thanks for replying Sam. I just tried it and got the same error
[#377634] Obtaining specific .csv data (one data at a time) — Kamarulnizam Rahim <niezam54@...>
Im using the following code:
[#377645] If you had the choice between Ruby & Groovy — Noah Cutler <sit1way@...>
Hey All.
[#377650] IDE? — <johan.tempelman@...>
Hi,
[#377653] Group elements by category — poles_apart <sergi.villanueva@...>
Hi! I'm a newbie on RoR, i'm just starting with it but i like it! But
[#377666] Alias method in module — Dagnan <dagnan@...>
Hi.
[#377668] Each Array Method Skipping first Array position — "Chris R." <chris.gogreen@...>
Could someone tell me why in the following code, when it iterates on the
[#377690] Simple way to detect 32bit vs 64bit? — Intransition <transfire@...>
Anyone have simple means for checking if the running arch is 32bit or 64bit?
[#377691] Packaging a Ruby file into a stand alone application — "Ajay R." <ajay.ravindrakumar@...>
Hello,
[#377703] Zlib::GzipReader and multiple compressed blobs in a single stream — Jos Backus <jos@...>
Hi,
On Jan 28, 2011, at 15:09, Jos Backus wrote:
On 02/02/2011 07:33 PM, Eric Hodel wrote:
On Thu, Feb 03, 2011 at 02:03:49PM +0900, Jeremy Bopp wrote:
On 2/3/2011 3:57 PM, Jos Backus wrote:
[#377761] New to programming AND new to Ruby — "Cassandra K." <cassandra.k@...>
Hello. I am trying to teach myself Ruby. I have no background in
[#377781] Regex Searching on Arbitrary Sequences — Michael Edgar <adgar@...>
Good day Rubyists,
[#377785] 2011: Which Ruby books have you read? And which would you recommend? — "Aston J." <azzzz@...>
I know there are a lot of threads about books, but some of them are as
> I know there are a lot of threads about books, but some of them are as
I have Beginning Ruby and Beginning Rails. but no training as a programmers the real world do not want to help us with the questions about Ruby
1)For Beginners:
[#377800] How to know the exit status within at_exit() block? — Iñaki Baz Castillo <ibc@...>
Hi, my program invokes "exit true" or "exit false" and I want to catch
On Jan 31, 2011, at 15:09, I=F1aki Baz Castillo wrote:
2011/2/1 Eric Hodel <drbrain@segment7.net>:
On Wed, Feb 2, 2011 at 4:46 AM, I=F1aki Baz Castillo <ibc@aliax.net> wrote:
2011/2/2 Josh Cheek <josh.cheek@gmail.com>:
On Feb 2, 2011, at 06:34, I=F1aki Baz Castillo wrote:
2011/2/3 Eric Hodel <drbrain@segment7.net>:
On Tue, Feb 1, 2011 at 12:09 AM, I=F1aki Baz Castillo <ibc@aliax.net> wrote=
2011/2/1 Robert Klemme <shortcutter@googlemail.com>:
On Wed, Feb 2, 2011 at 11:49 AM, I=F1aki Baz Castillo <ibc@aliax.net> wrote=
Re: Threading in ruby
On Thu, Jan 6, 2011 at 7:14 PM, Vishnu I. <pathsny@gmail.com> wrote: > Robert Klemme wrote in post #972776: >> On Thu, Jan 6, 2011 at 11:49 AM, Vishnu I. <pathsny@gmail.com> wrote: >>>> between memories (in JVM of course). >>>> >>>> Does that help? >>> >>> oops Im sorry I wasnt clear. My question was why would I need to >>> synchronize on the read of the index variable if the synchronized write >>> has created a memory barrier between the updation of the list item and >>> the index update? Thats the only piece i couldnt follow >> >> Ah, I see. =A0The reason is simple: if the thread reading the resource >> does not synchronize there is no memory barrier and hence no guarantee >> that it will read a current value. =A0The writing thread may have >> published the current state to global memory but your reading thread >> does not necessarily have imported that change. > > aha, got it. A synchronized block guarantees that stuff in one thread > that happens before the block is visible to any other thread that is > synchronized on the same mutex. =A0Thanks, I get it now! I don't think this is not scoped to mutexes: a memory barrier is always a global thing. If you think about it anything else would be very inefficient - the smallest unit of memory that an operating system deals with is a page. Again, this is relevant for Java. In Ruby there is no distinction between thread local and global memory - unless you are using JRuby of course. The reason for using the same mutex for the writer and the reader thread is simply that you need *one* critical section in order to ensure only one thread accesses whatever is guarded by the mutex at a time. >> If you want to read more I suggest you google for "double checked >> locking broken". =A0You'll find some articles which dissect this >> seemingly good idea. >> >> From your other mail: >> >>> hmm ok Im confused now. Say the main thread completes really quickly an= d >>> fires available.signal 10 times in 2 minutes. Meanwhile say the updater >>> has only updated twice. Wont the third update wait forever since there >>> is no one left to signal? >> >> No, because the updater won't block if it sees that there is still >> work to do (i <=3D index). =A0It will simply continue. =A0You can easily >> test this out by inserting a sleep in the updater. > > oh right. That was silly of me. :) Well, multithreading is a difficult topic that few people really grok. Apparently the human brain does work concurrently internally, yet it is not well suited to reason about concurrency. :-) For example, for me initially it was difficult to get the distinction right between a Thread object and the thread of execution that is represented by it. These are really two different things and the thread of execution is only temporarily associated with the object through which it can be manipulated and queried. Kind regards robert --=20 remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/