[#368826] ANN: home_run 0.9.1 Released — Jeremy Evans <code@...>

= home_run

14 messages 2010/09/01

[#368894] uninitialized constant NArray (Name Error) — Abder-Rahman Ali <abder.rahman.ali@...>

Following section (2) here:

12 messages 2010/09/02

[#368914] p vs. print — Abder-Rahman Ali <abder.rahman.ali@...>

I wrote the following scripts from section (2) here:

24 messages 2010/09/02
[#368915] Re: p vs. print — Alex Stahl <astahl@...5.com> 2010/09/02

Ruby uses "puts", not "print". "p" is short for "puts".

[#368977] Read cookie — Pål Bergström <pal@...>

How can I get the value of a browser cookie with Ruby?

29 messages 2010/09/03
[#368978] Re: Read cookie — Brian Candler <b.candler@...> 2010/09/03

P奪l Bergstr旦m wrote:

[#368984] Re: Read cookie — Pål Bergström <pal@...> 2010/09/03

Brian Candler wrote:

[#369036] ruby_archive 0.1.0 released — Jonathan Nielsen <jonathan@...>

After a summer of working on various ways to implement it, I'm happy to

10 messages 2010/09/03

[#369106] A better idiomatic way of doing this?! — Tim Romberg <tim.jakobsson@...>

Hi Im new at Ruby and been struggling with this lab I have for a course

12 messages 2010/09/05

[#369113] unable to open X server `' (Magick::ImageMagickError) — Abder-Rahman Ali <abder.rahman.ali@...>

I have written a Ruby script "dicom_info.rb", and when I try running

16 messages 2010/09/06
[#369119] Re: unable to open X server `' (Magick::ImageMagickError) — Brian Candler <B.Candler@...> 2010/09/06

On Mon, Sep 06, 2010 at 12:42:11PM +0900, Abder-Rahman Ali wrote:

[#369132] Re: unable to open X server `' (Magick::ImageMagickError) — Abder-Rahman Ali <abder.rahman.ali@...> 2010/09/06

Thanks a lot Brian.

[#369139] Re: unable to open X server `' (Magick::ImageMagickError) — Brian Candler <B.Candler@...> 2010/09/06

On Mon, Sep 06, 2010 at 11:55:32PM +0900, Abder-Rahman Ali wrote:

[#369140] Re: unable to open X server `' (Magick::ImageMagickError) — Abder-Rahman Ali <abder.rahman.ali@...> 2010/09/06

So, do you suggest installing "cygwin"?

[#369159] Re: unable to open X server `' (Magick::ImageMagickError) — Roger Pack <rogerpack2005@...> 2010/09/06

> you suggest installing "cygwin"?

[#369124] Odd functional programming question — Peter Hickman <peterhickman386@...>

Ok this is probably not really functional programming but I was just

10 messages 2010/09/06

[#369169] How do I request a HTTPS page? — Samuel Sternhagen <samatoms@...>

I would like to access a https page from irb

14 messages 2010/09/06

[#369226] What OS do you use for Ruby development? — Nick Hird <nrhird@...>

I don't want to start any OS wars. I was just curious as to what OS

67 messages 2010/09/07

[#369301] Nokogiri and LibXML — unbewusst.sein@... (Une B騅ue)

Each time i launch a script using Nokogiri i get :

12 messages 2010/09/08

[#369302] Receiving array naturally? — Terry Michaels <spare@...>

As I learn Ruby, I find a lot of flexibility in the syntax. I was

14 messages 2010/09/08

[#369389] Key Associated w/ Maximum Value in Hash — Timothy Baron <timothy.baron@...>

Simple question: what's the cleanest way to retrieve a key associated

11 messages 2010/09/09

[#369477] How to do foo.chomp!.rstrip!.downcase! ? — Geometric Patterns <geometric.patterns@...>

15 messages 2010/09/10

[#369623] Ruby packaging in Debian and Ubuntu: Mythbusting and FAQ — Lucas Nussbaum <lucas@...>

Hi,

11 messages 2010/09/12

[#369638] Declarative relations between object attributes — Knut Franke <knut.franke@...>

Some time ago I stumbled over Cells[1], a Common Lisp extension allowing

16 messages 2010/09/12

[#369710] Encoding error while installing rails on ruby 1.9.2 — Bek Bek <bekis3@...>

Hello everybody,

11 messages 2010/09/14

[#369796] Ruby Multi-threading? — Terry Michaels <spare@...>

I read a Ruby e-book recently that indicated that although Ruby has

12 messages 2010/09/15

[#369952] Developing for Ruby on Windows? — Tom Wardrop <tom@...>

I've heard a lot of criticism about developing for Ruby on Windows, but

11 messages 2010/09/17

[#370039] Ruby-based data language — Intransition <transfire@...>

Has anyone ever endeavored to create a data/configuration file format

14 messages 2010/09/19

[#370053] Getting GUI for ruby for Linux running (QT or wxWidget)? — Markus Fischer <markus@...>

Hi,

23 messages 2010/09/19
[#370054] Re: Getting GUI for ruby for Linux running (QT or wxWidget)? — Markus Fischer <markus@...> 2010/09/19

On 20.09.2010 01:14, Markus Fischer wrote:

[#370116] Re: Getting GUI for ruby for Linux running (QT or wxWidget)? — Quintus <sutniuq@...> 2010/09/20

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

[#370164] Re: Getting GUI for ruby for Linux running (QT or wxWidget)? — Ryan Melton <ryanmelt@...> 2010/09/21

qt does have a new gem I put together:

[#370205] QT works! (was: Re: Getting GUI for ruby for Linux running (QT or wxWidget)) — Markus Fischer <markus@...> 2010/09/21

Hi,

[#370127] An elegant way... — "F. Senault" <fred@...>

Hello everybody.

23 messages 2010/09/20

[#370210] The Great Ruby GUI Toolkit Roundup — Ed Howland <ed.howland@...>

Hi,

15 messages 2010/09/21

[#370257] having problems with open4 and stuck forked processes — Tim Uckun <timuckun@...>

I am running a batch process which uses the wkhtmltoimage-i386 binary

13 messages 2010/09/22
[#370268] Re: having problems with open4 and stuck forked processes — Robert Klemme <shortcutter@...> 2010/09/22

On Wed, Sep 22, 2010 at 2:31 PM, Tim Uckun <timuckun@gmail.com> wrote:

[#370294] Re: having problems with open4 and stuck forked processes — Tim Uckun <timuckun@...> 2010/09/22

> What do you mean by that? =C2=A0Goes the timeout undetected? =C2=A0Can't =

[#370309] Re: having problems with open4 and stuck forked processes — Robert Klemme <shortcutter@...> 2010/09/23

On 23.09.2010 01:59, Tim Uckun wrote:

[#370289] Sorting problem with an Array of Arrays — Paul <tester.paul@...>

Hi there, I have an array of arrays that looks like the following:

15 messages 2010/09/22

[#370296] Ruby Installation Error — Tridib Bandopadhyay <tridib04@...>

I am trying this command to build the ruby interpreter

20 messages 2010/09/23
[#370689] Re: Ruby Installation Error — Brian Candler <b.candler@...> 2010/09/29

Tridib Bandopadhyay wrote:

[#370319] to make dot method dot method work? — Pen Ttt <myocean135@...>

here is the class

14 messages 2010/09/23

[#370373] how do i force ruby to release memory — Amit Tomar <amittomer25@...>

Hi all,

19 messages 2010/09/24
[#370374] Re: how do i force ruby to release memory — Robert Klemme <shortcutter@...> 2010/09/24

On Fri, Sep 24, 2010 at 7:36 AM, Amit Tomar <amittomer25@yahoo.com> wrote:

[#370379] Re: how do i force ruby to release memory — Amit Tomar <amittomer25@...> 2010/09/24

Robert Klemme wrote:

[#370380] Re: how do i force ruby to release memory — Jes俍 Gabriel y Gal疣 <jgabrielygalan@...> 2010/09/24

On Fri, Sep 24, 2010 at 10:31 AM, Amit Tomar <amittomer25@yahoo.com> wrote:

[#370383] Re: how do i force ruby to release memory — Amit Tomar <amittomer25@...> 2010/09/24

Jes炭s Gabriel y Gal叩n wrote:

[#370388] How to delete the browser cache through ruby — Arihan Sinha <arihan_sinha@...>

Hi All,

11 messages 2010/09/24

[#370590] Point me to help w/ multithreading in 1.9.2-p0 — Alex Stahl <astahl@...5.com>

Hi Folks - A week or two ago, I pinged this list for recommendations on

11 messages 2010/09/28
[#370593] Re: Point me to help w/ multithreading in 1.9.2-p0 — Alex Stahl <astahl@...5.com> 2010/09/28

Nevermind... figured it out.

[#370640] puts and return — Jim Haungs <jhaungs@...>

10.times do |i|

14 messages 2010/09/28

[#370661] Color sequences in ri on Windows — Eric Christopherson <echristopherson@...>

After installing some gems, the system recommended that I refresh ri

11 messages 2010/09/28

[#370721] The beauty of Ruby through examples — Adriano Ferreira <adrfer@...>

Hey all,

33 messages 2010/09/29

[#370740] Can't upgrade ruby on Snow Leopard — Ast Jay <azzzz@...>

I've followed the instructions here:

13 messages 2010/09/29

[#370796] How to prevent overwriting methods by accident? — Stefan Salewski <mail@...>

In Ruby we can add new methods to existing classes.

13 messages 2010/09/30
[#370797] Re: How to prevent overwriting methods by accident? — Jeremy Bopp <jeremy@...> 2010/09/30

On 9/30/2010 2:15 PM, Stefan Salewski wrote:

[#370800] Re: How to prevent overwriting methods by accident? — Alex Stahl <astahl@...5.com> 2010/09/30

But is there a way to call the original method instead of just quitting

Re: Ruby Multi-threading?

From: Robert Klemme <shortcutter@...>
Date: 2010-09-15 07:14:55 UTC
List: ruby-talk #369806
On Wed, Sep 15, 2010 at 7:01 AM, David Masover <ninja@slaphack.com> wrote:
> On Tuesday, September 14, 2010 11:07:10 pm Chuck Remes wrote:
>> On Sep 14, 2010, at 10:59 PM, Terry Michaels wrote:
>> > I read a Ruby e-book recently that indicated that although Ruby has
>> > Multi-threading capabilities, it is a fake multi-threading. I.e., the
>> > interpreter simply switches between the executing threads, rather than
>> > running them concurrently.
>> >
>> > Then recently I came across an online Ruby tutorial that specifically
>> > said that Ruby threads could be executed in parallel on a multi-core
>> > machine. So I'm a little confused.
>> >
>> > Does Ruby have real multi-threading, or is it just context switching?
>> > This is a rather important issue for me.
>>
>> Just about any book on this topic will have outdated information. Here's
>> the breakdown.
>
> Nice summary, mostly accurate. I'd just like to add that, interestingly...
>
> JRuby doesn't have great process management. It has OK process management, but
> it seems limited by the JVM. This may be better now, and I may be entirely
> wrong, but I wouldn't trust fork here.
>
> With MRI, on the other hand, fork has always worked. The only sticky part is
> that no mainstream versions of MRI play nice with COW, which means the entire
> process memory _will_ be copied as soon as GC runs.
>
> The usual answer seems to be: Use JRuby if you really want threads, but most
> Ruby people care more about scaling to multiple machines more than multicore
> on the same machine, at which point it becomes really easy to just spin up a
> bunch of MRIs.

... using DRb for example which makes IPC a breeze.  Absolutely agree.

Btw, with regard do concurrency: for applications which are IO bound
even MRI's threading model is often sufficient because IO operations
do not block the process but rather give CPU to other threads.  The
best is of course to test and benchmark to see whether performance is
sufficient - something true for all kinds of applications and
runtimes.

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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