Can anyone explain to me why the code works: \
**Author:** [@Francis\_H](https://www.ruby-forum.com/u/Francis_H)\
**Replies:** 2\
**Last updated:** [February 3, 2006, 5:45am UTC](https://www.ruby-forum.com/t/looking-for-a-good-web-based-feed-aggregator/53379 "2006-02-03T05:45:03Z")
Hi kids, I’m looking to install a web-based RSS & Atom aggregator for a project I’m doing in March. The ideal system would meet a few requirements, though of course I’ve got plenty of time to bang around under the hoo…
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## [Strange posting about ebooks](https://www.ruby-forum.com/t/strange-posting-about-ebooks/98762)
For some unfathomable reason I have received four emails containing various Ruby related ebooks: Pragmatic Programmer, From Journeyman to Master.pdf Syngress - Ruby Developer’s Guide.pdf The Pickaxe.pdf Game Program…
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## [Gotcha for Newbies](https://www.ruby-forum.com/t/gotcha-for-newbies/100512)
Hi all, I just thought I’d drop this one in for any newbie’s playing around with directory listings… me@somehost\> find /somedir \> results File.open("./results").each do |file| puts file unless File.directory(file) …
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## [Re: neuroimage software - scientific computing and visualiza](https://www.ruby-forum.com/t/re-neuroimage-software-scientific-computing-and-visualiza/100510)
So are you saying that if you have an array like: a = \[‘d’, ‘b’, ‘a’, ‘c’, ‘e’\] You would like to get something like: a.sort\_index #=\> \[2, 1, 3, 0, 4\] If that’s the case, then I’m sure it’s doable. No built-in met…
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## [Port a Library (#64)](https://www.ruby-forum.com/t/port-a-library-64/100333)
The great element of porting a library is that you get examine another programmer’s ideas. If you’re lucky, that may teach you a new trick or two. I’ll use my experience as an example. Using Buffers When I decided …
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## [Re: Work around for "Bignum out of Float range"?](https://www.ruby-forum.com/t/re-work-around-for-bignum-out-of-float-range/100437)
Dear Sam, your problem is somewhat insolvable, since the square root of 5 has an infinite number of digits, so it cannot be represented correctly on any computer (in decimal or binary notation). For arbitrary precisi…
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## [Re: Mongrel HTTP Library 0.2.0 (Fast And RubyForgified)](https://www.ruby-forum.com/t/re-mongrel-http-library-0-2-0-fast-and-rubyforgified/100195)
Seem to have a slight problem with the mongrel gem, unless I’m using the custom require supplied by rubygems, I can’t get the gem to work. The following: p require ‘rubygems’ p require\_gem ‘mongrel’ p Mongrel gives…
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## [Need help installing fxruby (gem) on gentoo](https://www.ruby-forum.com/t/need-help-installing-fxruby-gem-on-gentoo/100128)
Hello, I just tried to install fxruby throug rubygems, but got the following error (see at the end of the message for complete output): /usr/lib64/ruby/1.8/fileutils.rb:243: command not found: ruby extconf.rb i fxrub…
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## [Win XP USB Port?](https://www.ruby-forum.com/t/win-xp-usb-port/53345)
Good morning rubyists, has anyone ever tried to termiante a USB device on a Win XP system from ruby? best regard out of the ice eric.
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## [Numeric#of](https://www.ruby-forum.com/t/numeric-of/99591)
And now it’s time for yet another Mongrel release. Mongrel is a small fast HTTP library written in (partly) Ruby. It is intended to be used by web app framework authors to make their applications fast and deployable …
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## [Question about PStore API](https://www.ruby-forum.com/t/question-about-pstore-api/53374)
Hi all, This is one of those, “Why are things this way” kind of questions. Why doesn’t PStore#transaction yield itself? That way I could write: store.transaction{ |s| s\[‘names’\] = %w/foo bar baz/ s\[‘tree’\] = T.new …
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## [Installing Mysql/ruby on Windows 2000](https://www.ruby-forum.com/t/installing-mysql-ruby-on-windows-2000/53373)
Hello, I try to install Mysql/ruby on Windows 2000, but the http://www.tmtm.org/en/mysql/ruby/ page says 1. ruby extconf.rb (ok) 2. make (??? there is no make in windows → unknown command). Somebody can help me ? Than…
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## [Chomping and stomping](https://www.ruby-forum.com/t/chomping-and-stomping/53367)
Chaps, Here’s a short script to keep requesting for input… #!/usr/bin/ruby -w def chomper xx = gets.chomp! until $\_ == “qq” puts “hit me with a squirell!” xx = gets.chomp! xx end end chomper this works but su…
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## [Re: Indentation vs. "end"s](https://www.ruby-forum.com/t/re-indentation-vs-end-s/53348)
Then get to REALLY love Python and the problem is gone for you (and for honorable Bruce Eckel too). Otherwise it looks like an inviation to a flame. Gennady.
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## [Re: ruby-dev summary 28206-28273](https://www.ruby-forum.com/t/re-ruby-dev-summary-28206-28273/100372)
h\["key"\] and h\["key"\].dispatch h\["key"\].nil? {|h| h.dispatch } This issue is still open. Yuck. Looks like a hack from Perl6. Not Ruby-ish. Syntactically, a method might look better than an operator: a\[1\].if?.s…
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## [Work around for "Bignum out of Float range"?](https://www.ruby-forum.com/t/work-around-for-bignum-out-of-float-range/100428)
Hi! First, some codes. def calc(n) (2 \*\* n) \* (5 \*\* 0.5) end puts calc(10000) =\>warning: Bignum out of Float range I understand what the problem is. If I want to get the result, how can I work around the barrier? …
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## [Re: Indentation vs. "end"s](https://www.ruby-forum.com/t/re-indentation-vs-end-s/100427)
\-----Original Message----- From: Michael S. \[mailto:removed\_email\_address@domain.invalid\] Sent: Thursday, February 02, 2006 11:16 AM To: ruby-talk ML Subject: Re: Indentation vs. "end"s Somehow my first message got…
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## [FXRuby Image Scaling question](https://www.ruby-forum.com/t/fxruby-image-scaling-question/100336)
I have a screen with a logo on it, I would like the logo to scale with screen size. I have tried more than a couple variations on: # Construct an image @logo = FXPNGImage.new(getApp(), File.open("logo.png", "rb").read,…
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## [Rails + Oracle](https://www.ruby-forum.com/t/rails-oracle/99987)
I have tried every connection string on the Rails site and it will not connect. I can create a regular dbi script and connect and pull out data. If someone is using Rails + Oracle can you post the relevent portions o…
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## [Readline extension doesn't compile with ruby-1.8.4 on RedHat](https://www.ruby-forum.com/t/readline-extension-doesnt-compile-with-ruby-1-8-4-on-redhat/53371)
Hi, I am basically following this guide: and do curl -O ftp://ftp.gnu.org/gnu/readline/readline-5.1.tar.gz tar xzvf readline-5.1.tar.gz cd readline-5.1 ./configure --prefix=/usr/local make make install fine. T…
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## [Irb cursor navigation](https://www.ruby-forum.com/t/irb-cursor-navigation/100387)
Whenever I use irb on my OS X 10.4 box, pressing left, right, up, or down results in ^\[\[D, ^\[\[A, etc instead of the intended effect. Is there a fix? Thank you, ~Matthew Maycock
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## [Re: WIN32OLE extension using in/out SAFEARRAYs (Matlab inter](https://www.ruby-forum.com/t/re-win32ole-extension-using-in-out-safearrays-matlab-inter/100395)
Here is the method signature. is the code I am using. require ‘win32ole’ matlab = WIN32OLE.new(‘Matlab.Application’) matlab.Execute(‘bob = 1:5;’) t1 = Array.new(5, 0.0) t2 = t1.dup t3 = matlab.GetFullMatrix(‘bob’…
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## [Class vs. Object](https://www.ruby-forum.com/t/class-vs-object/100113)
I’m new to Ruby, and relatively new to OOP (1.5 years of Java – but nothing too serious. I didn’t really bother to try and understand it deeply). I’m trying to grok the difference between a class and an object. My …
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## [Re: How to make beep sounds?](https://www.ruby-forum.com/t/re-how-to-make-beep-sounds/100385)
length/frequency parameters?) in Ruby? Thanks, Axel On Windows, see win32-sound. Regards, Dan
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## [How to make beep sounds?](https://www.ruby-forum.com/t/how-to-make-beep-sounds/100383)
Dear all, is there an easy way to output a beep sound (maybe with length/frequency parameters?) in Ruby? Thanks, Axel
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## [Re: memoize to a file](https://www.ruby-forum.com/t/re-memoize-to-a-file/100370)
it possible you ran this program using 1.8.2, downloaded Brian I have applied that patch along with Andrew J.'s refactoring. I should have a release out soon. Regards, Dan
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## [Re: memoize to a file](https://www.ruby-forum.com/t/re-memoize-to-a-file/53368)
message: "in that error if such is the case, since Marshal is not compatible Also note that ruby can read Marshal data in older formats if if (RTEST(ruby\_verbose) && minor != MARSHAL\_MINOR) { minor change happened …
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## [Callbacks, events, notification in general](https://www.ruby-forum.com/t/callbacks-events-notification-in-general/53316)
OK, bare with me, this is brainstorming of a sorts: I want to have some kind of event notification from my classes. Typically what I would do would be to pass a logger object and let the class log by itself, but I’m n…
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