From: Sean O'Halpin <sean.ohalpin@...>
Date: 2012-08-18T08:15:04+09:00
Subject: Re: variable from array to function to array

On Fri, Aug 17, 2012 at 1:15 PM, Dave Castellano <lists@ruby-forum.com> wrote:
> The bigger picture...  I am saving multiple question templates in a
> array and need to store all the info (the question, the min and max
> ranges, the units of measure etc assoc with each question.  The
> associated info is used to build the question ... eg in question one,
> need to pass 20,40 to number_range(min,max)  and use the returned value
> as u.

If you're using ruby 1.9, you can use the new hash interpolation syntax:

  puts "Hello %{who}" % { :who => "world" }

outputs

  Hello world

For example:

  def number_range(min,max)
    min + rand(max - min + 1)
  end

  array =[
          [ "A slide is placed %{value} %{unit} to the left of a
lens...", 20, 40, "cm"],
          [ "An image is in focus %{value} %{unit} to the right of
a...",  10, 25, "mm" ],
         ]

  array.each do |item|
    text, min, max, unit = item
    puts text % { :value => number_range(min, max), :unit => unit }
  end

  puts "Hello %{who}" % { :who => "world" }

Regards,
Sean