Turning off interpolation in a regex


#1

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”?

Any assistance, pointers or suggestions appreciated.


Jason P.
removed_email_address@domain.invalid

“The computer allows you to make mistakes
faster than any other invention, with the
possible exception of handguns and tequila.”


#2

Jason P. 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}""


#3

On Mar 30, 2006, at 8:53 PM, Joel VanderWerf wrote:

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

set object somehow

eval “”#{s}""

Thank you, Joel.


Jason P.
removed_email_address@domain.invalid

“The computer allows you to make mistakes
faster than any other invention, with the
possible exception of handguns and tequila.”