From: Dave Castellano <lists@...>
Date: 2012-08-19T09:17:00+09:00
Subject: Re: Access returned value in a string?

Stefan Codrescu wrote in post #1072788:
> Additionally you could do something like
> questions = [ "a slide is placed #{a=rand(3..15), a} cm to the left of a
> lens."
> a could then be passed to some function.
>
>> questions =
>> "A slide is placed #{rand(3..15)} cm to the left of a lens."
>
> StefaN

Tried that...
I have the following...
questions = [
   "A slide is placed #{u = rand(3..15)} cm to the left of a lens.  The 
image is in perfect focus on the screen #{v = rand(1..4)} m to the right 
of the lens. What is the power of the lens?",
   "A slide is placed #{u = rand(3..15)} cm to the left of a +#{p = 
rand(3..15)} D lens.  At what distance will the screen need to be placed 
to the right of the lens to have the image be in focus?",
  "An image is in focus #{v = rand(3..15)} m to the right of a +#{p = 
rand(3..15)} D lens.  At what distance (in cm) to the left of the lens 
is the slide placed?"

puts questions[0]
puts u
puts v
I can't figure out why but the values of u and v returned are always the 
values of the first instance of #{} in the second and third question.

-- 
Posted via http://www.ruby-forum.com/.