From: "Michael W. Ryder" <_mwryder@...>
Date: 2007-05-23T08:50:09+09:00
Subject: Substituting variables in a method

I am trying to figure out how to pass variables for the parameters to a 
method.  I want to do something like b = a.tr({c}, {d}) where 'c' is the 
text to be matched and 'd' is the replacement text.  Obviously the above 
does not work, nor does b = a.tr(#{c}, ${d}).  Is this even possible or 
do I need to work out some regular expression to do the same thing.
What I am trying to do is have a method where I can say change all 
periods to commas and commas to periods or change all *s to #s or ...