From: James Edward Gray II <james@...>
Date: 2009-10-04T04:33:23+09:00
Subject: Re: Writing a Mad Libs program?

On Oct 3, 2009, at 2:19 PM, John Kriple wrote:

> I had looked at those before, but I couldn't follow very well as I am
> very new to Ruby.
>
> Would you be able to get me started using one of those examples?
>
> How does the mad lib script I wrote work with the commands?

Here's an example of me using the code from the first solution to play  
with the example in the quiz:

$ ruby madlib.rb madlib.txt
Give me a gemstone:
Ruby
Give me a gemstone:
Emerald

madlib
Our favorite language is Ruby.  We think Ruby is better
than Emerald.
$ cat madlib.rb
def ask_for(str)
     puts "Give me #{str}:"
     $stdin.gets.chomp
end

keys={}

puts "", ARGV[0].split(".")[0].gsub("_", " "),
IO.read(ARGV[0]).gsub(/\(\(([^)]+)\)\)/) {
     if (t=$1) =~ /\A([^:]+):(.+)\z/
        keys[$1]=ask_for($2)
     else
        keys[t] || ask_for(t)
     end
}
$ cat madlib.txt
Our favorite language is ((gem:a gemstone)).  We think ((gem)) is better
than ((a gemstone)).

Hope that helps.

James Edward Gray II