Comments on: Implementing ‘15 Exercises for Learning a new Programming Language’ http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/ Experiences with Ruby and Rails, Web2.0 and other development technologies Fri, 25 Jul 2008 10:34:31 +0000 http://wordpress.org/?v=2.0.2 by: Thando Vuzane - Net Age http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-40043 Fri, 09 May 2008 13:57:48 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-40043 <p>Wow, thank you for this post. I will go home and do the '15 exercises for learning a new Programming Language'. And I'll use the above coding as my reference. I've just recently started developing in Ruby on Rails, so I'm at a point where I just want as many challenges and new applications to develop as possible, because I want to fully explore RoR. </p> <p>Thank you again,</p> Wow, thank you for this post. I will go home and do the ‘15 exercises for learning a new Programming Language’. And I’ll use the above coding as my reference. I’ve just recently started developing in Ruby on Rails, so I’m at a point where I just want as many challenges and new applications to develop as possible, because I want to fully explore RoR.

Thank you again,

]]> by: Thando Vuzane - Net Age http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-39851 Thu, 08 May 2008 09:04:19 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-39851 <p>Has anyone here created a helper.rb for a vCard on Rails? Please post an example of your coding if you have.</p> <p>Thanx!</p> Has anyone here created a helper.rb for a vCard on Rails? Please post an example of your coding if you have.

Thanx!

]]> by: links for 2008-03-29 | Moewes.com http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-35669 Sat, 29 Mar 2008 13:32:59 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-35669 <p>[...] Ruby, Rails, Web2.0 » Blog Archive » Implementing ‘15 Exercises for Learning a new Programming Language’ (tags: programming) [...]</p> […] Ruby, Rails, Web2.0 » Blog Archive » Implementing ‘15 Exercises for Learning a new Programming Language’ (tags: programming) […]

]]> by: Bill http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-34753 Sat, 15 Mar 2008 15:57:03 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-34753 <p><a> </a></p>

]]> by: Diesel http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-34742 Sat, 15 Mar 2008 13:43:00 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-34742 <p><a> </a></p>

]]> by: Vince http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-30658 Fri, 25 Jan 2008 02:20:04 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-30658 <p>In solution #3 instead of &#60;&#60; p a.sort { &#124;a,b&#124; b&#60;=&#62;a } &#62;&#62; you could use &#60;&#60; p a.sort.reverse &#62;&#62;...just more readable</p> In solution #3 instead of << p a.sort { |a,b| b<=>a } >> you could use << p a.sort.reverse >>…just more readable

]]> by: James Edward Gray II http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-29694 Thu, 17 Jan 2008 13:54:08 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-29694 <p>I see there's already a Windows specific answer to the first problem, so I shall provide the Unix solution:</p> <pre><code>#!/usr/bin/env ruby -wKU require "io/wait" state = `stty -g` begin system "stty raw -echo cbreak isig" 1.upto(1.0/0.0) do &#124;n&#124; puts n exit if $stdin.ready? and $stdin.getc == 27 end ensure system "stty #{state}" end __END__ </code></pre> <p>The reason you need the platform specific code here is that you are doing complex interactions (reading and writing at the same time) with a terminal and all terminals are different.</p> I see there’s already a Windows specific answer to the first problem, so I shall provide the Unix solution:

#!/usr/bin/env ruby -wKU

require "io/wait"

state = `stty -g`
begin
  system "stty raw -echo cbreak isig"

  1.upto(1.0/0.0) do |n|
    puts n
    exit if $stdin.ready? and $stdin.getc == 27
  end

ensure
  system "stty #{state}"
end

__END__

The reason you need the platform specific code here is that you are doing complex interactions (reading and writing at the same time) with a terminal and all terminals are different.

]]> by: knownone http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-29090 Sun, 13 Jan 2008 15:56:40 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-29090 <p>are your platform windows?nonblock.rb requires fcntl,but it didn't implement on all platforms?</p> are your platform windows?nonblock.rb requires fcntl,but it didn’t implement on all platforms?

]]> by: Figet http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-26795 Tue, 18 Dec 2007 14:32:34 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-26795 <p>Nice blog!</p> Nice blog!

]]> by: wurzel http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-22625 Sun, 28 Oct 2007 20:06:04 +0000 http://www.rubyrailways.com/implementing-15-exercises-for-learning-a-new-programming-language/#comment-22625 <p>I cant get the break on ENTER loop working on ruby 1.8.6</p> <p>require 'io/nonblock'</p> <p>i=0 loop do begin break if STDIN.nonblock{ STDIN.sysread(100) } rescue Errno::EAGAIN end puts i += 1 end</p> <p>any ideas why?</p> <p>I get this error</p> <p>loopESC.rb:6: undefined method <code>nonblock' for #&#60;IO:0x2846b04&#62; (NoMethodError) from loopESC.rb:4:in</code>loop' from loopESC.rb:4</p> I cant get the break on ENTER loop working on ruby 1.8.6

require ‘io/nonblock’

i=0
loop do
begin
break if STDIN.nonblock{ STDIN.sysread(100) }
rescue Errno::EAGAIN
end
puts i += 1
end

any ideas why?

I get this error

loopESC.rb:6: undefined method nonblock' for #<IO:0x2846b04> (NoMethodError)
from loopESC.rb:4:inloop’
from loopESC.rb:4

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