Comments on: 5 Ways to Sharpen Your Ruby-foo http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/ A goal is a dream with a deadline. Sat, 30 Aug 2008 00:47:28 +0000 http://wordpress.org/?v=2.5.1 By: Nick Vrilic http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-102371 Nick Vrilic Thu, 10 Apr 2008 10:50:19 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-102371 More on Random numbers in Ruby here: http://snippets.dzone.com/posts/show/4697 Anyway, an informative post! More on Random numbers in Ruby here:

http://snippets.dzone.com/posts/show/4697

Anyway, an informative post!

]]> By: szeryf http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-102369 szeryf Thu, 10 Apr 2008 08:40:54 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-102369 The "randomize by sorting" idiom ([1,2,3,4,5].sort_by { rand }) is seriously flawed. It generates biased results and is asymptoticaly slower that Knuth-Yates algorithm (O(n log n) vs O(n)). I wouldn't recommend it to anyone as a general solution. I wrote about it at http://szeryf.wordpress.com/2007/06/19/a-simple-shuffle-that-proved-not-so-simple-after-all/ The “randomize by sorting” idiom ([1,2,3,4,5].sort_by { rand }) is seriously flawed. It generates biased results and is asymptoticaly slower that Knuth-Yates algorithm (O(n log n) vs O(n)). I wouldn’t recommend it to anyone as a general solution. I wrote about it at http://szeryf.wordpress.com/2007/06/19/a-simple-shuffle-that-proved-not-so-simple-after-all/

]]> By: Glenn Gillen http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-102343 Glenn Gillen Tue, 08 Apr 2008 10:01:05 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-102343 Great article. I've found with the .to_i conversion that it's helped to be a little more explicit as most people aren't aware that it take parameters, so: 2.to_i(base=2) Great article. I’ve found with the .to_i conversion that it’s helped to be a little more explicit as most people aren’t aware that it take parameters, so:

2.to_i(base=2)

]]> By: Prateek Dayal http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-62327 Prateek Dayal Thu, 23 Aug 2007 05:25:34 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-62327 <strong>Ruby on rails learning curve!</strong> The post should be called my ruby on rails learning curve. I just wanted to write about what it was for a person like me to learn ruby on rails and get productive in it and make something like Muziboo.com I was introduced to rails by a cousin of mine w... Ruby on rails learning curve!

The post should be called my ruby on rails learning curve. I just wanted to write about what it was for a person like me to learn ruby on rails and get productive in it and make something like Muziboo.com
I was introduced to rails by a cousin of mine w…

]]> By: Links sobre Ruby « Learning on Rails http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-61564 Links sobre Ruby « Learning on Rails Mon, 20 Aug 2007 12:44:34 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-61564 [...] Links sobre Ruby 20Ago07 Cinco dicas para Ruby: http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/ [...] [...] Links sobre Ruby 20Ago07 Cinco dicas para Ruby: http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/ [...]

]]> By: de tomKronieken » Blog Archive » links for 2007-08-10 http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-59142 de tomKronieken » Blog Archive » links for 2007-08-10 Fri, 10 Aug 2007 19:17:39 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-59142 [...] 5 Ways to Sharpen Your Ruby-foo - igvita.com (tags: wishlist) [...] [...] 5 Ways to Sharpen Your Ruby-foo - igvita.com (tags: wishlist) [...]

]]> By: Ilya Grigorik http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-42309 Ilya Grigorik Sun, 03 Jun 2007 22:36:56 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-42309 Rick, thanks for the clarification. I'm pretty your sequence is the correct one: <blockquote>(singleton of B) -> (singleton of Object) -> Class -> Module ->Object -> (I_Class wrapper for Kernel)</blockquote> I abbreviated this sequence in my original post, but have obviously lost a lot of details in the translation. Come to think of it, I think that's the way that David Black described in his book also. Rick, thanks for the clarification. I’m pretty your sequence is the correct one:

(singleton of B) -> (singleton of Object) -> Class -> Module ->Object -> (I_Class wrapper for Kernel)

I abbreviated this sequence in my original post, but have obviously lost a lot of details in the translation. Come to think of it, I think that’s the way that David Black described in his book also.

]]> By: Rick DeNatale http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-41921 Rick DeNatale Sat, 02 Jun 2007 23:09:02 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-41921 Ilya, You say: <blockquote> On every method call, Ruby will search its object space in the following order: 1. Current instance, followed by class methods ... </blockquote> There's actually no crossover between instance methods and class methods. This came up on ruby-talk last week also. Here's a post on <a href="http://talklikeaduck.denhaven2.com/articles/2007/06/02/chain-chain-chain" rel="nofollow" rel="nofollow"> which explains how method lookup really works</a>. Rick Ilya,

You say:

On every method call, Ruby will search its object space in the following order:

1. Current instance, followed by class methods
…

There’s actually no crossover between instance methods and class methods. This came up on ruby-talk last week also.

Here’s a post on
which explains how method lookup really works.

Rick

]]> By: Chain, Chain, Chain http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-41920 Chain, Chain, Chain Sat, 02 Jun 2007 23:04:33 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-41920 [...] A week or so ago, someone posted some questions on ruby-talk about this issue, and then twoday I ran across this blog review of David Black’s “Ruby for Rails” which contained this: On every method call, Ruby will search its object space in the following order: [...] [...] A week or so ago, someone posted some questions on ruby-talk about this issue, and then twoday I ran across this blog review of David Black’s “Ruby for Rails” which contained this: On every method call, Ruby will search its object space in the following order: [...]

]]> By: Ilya Grigorik http://www.igvita.com/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-37463 Ilya Grigorik Fri, 11 May 2007 04:39:48 +0000 http://www.igvita.com/blog/2007/05/08/5-ways-to-sharpen-your-ruby-foo/#comment-37463 Jgeiger, thanks for that. I should proofread my stuff more carefully! :) Grant, thanks for the clarification. Also, nice tip about the .to_s(2), I wasn't aware of that feature! Jgeiger, thanks for that. I should proofread my stuff more carefully! :)

Grant, thanks for the clarification. Also, nice tip about the .to_s(2), I wasn’t aware of that feature!

]]>