From: Joel VanderWerf <vjoel@...>
Date: 2006-03-31T11:53:14+09:00
Subject: Re: turning off interpolation in a regex

Jason Perkins wrote:
> I need to be able to find a run of characters (like *count*) in a string
> and substitute in the value #{object.count} so that I'm left with a
> string that can itself be interpolated. The method for doing this that
> jumped out was to use the string's gsub method like this:
> 
>     original_string.gsub(/\*count\*/, /count of #{object\.count}/
> 
> (Old hands at Ruby are now chuckling, and rightly so) How do I go about
> getting the literal text in the substitution portion without getting an,
> "NameError: undefined local variable or method `object' for main:Object"?

s = original_string.gsub(/\*count\*/, 'count of #{object.count}')

# set object somehow

eval "\"#{s}\""

-- 
      vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407