From: Alder Green <alder.green@...>
Date: 2006-03-21T23:43:30+09:00
Subject: Re: Problem with Why's Poignants guide code..help

Any Python experience by any chance? :)

In wordlist.rb you create a *local variable* code_words. When you
require wordlist.rb, locals variable get created, then destroyed. Only
constants (classes, modules) survive. So you can either store that
hash as a constant (inside a module/class), or (cleaner, more
sensible) store it in some sort of serial representation format, e.g.
Yaml.

Alder Green

On 3/21/06, James Whittaker <jmwhittaker@gmail.com> wrote:
> Trying to follow the code on chapter 4 (
> http://poignantguide.net/ruby/chapter-4.html ) and I cannot get the
> section called  Making the swap'c code to work.
>
> this is saved as wordlist.rb:
>
>  code_words = {
>    'starmonkeys' => 'Phil and Pete, those prickly chancellors of the New
> Reich',
>    'catapult' => 'chucky go-go', 'firebomb' => 'Heat-Assisted Living',
>    'Nigeria' => "Ny and Jerry's Dry Cleaning (with Donuts)",
>    'Put the kabosh on' => 'Put the cable box on'
>  }
>
> and this as wordtest.rb:
>
> require 'wordlist'
>
>  # Get evil idea and swap in code words
>  print "Enter your new idea: "
>  idea = gets
>  code_words.each do |real, code|
>    idea.gsub!( real, code )
>  end
>
>  # Save the jibberish to a new file
>  print "File encoded.  Please enter a name for this idea: "
>  idea_name = gets.strip
>  File::open( "idea-" + idea_name + ".txt", "w" ) do |f|
>    f << idea
>  end
>
> When I run this from the command line (on WinXP) I enter:
>
> ruby wordtest.rb
>
> The program runs asks for an input then blows up saying that undefined
> local variable code_words on line 7 in wordtest.rb.
>
> I have followed everything and the only way I can get a result it to
> place the whole code_words has directly into wordtest.rb. So I think it
> has something to do with the require statement but still cannot get
> anything to work.
>
> Thanks for your help.
>
> --
> Posted via http://www.ruby-forum.com/.
>
>