From: ljw1001@...
Date: 2005-11-28T13:32:28+09:00
Subject: string substitution question

I'm reading a file using:

  " str = IO.read("textfile1.txt") "

and trying to output the results using

   " puts str "
The problem is that I want to substitute values in the file.  It
includes this text: #{(3+4).to_s}

I expected the puts statement to output 7, but it outputs the code
literally as #{(3+4).to_s}

How can i get this substitution to happen?

thanks for your help.