Question

What is the regex pattern for a regex pattern? I am using Ruby version 1.8.7, and have a requirement to determine if a given string is a regex pattern. What is the best pattern to use to determine this?

Thanks,
Anand

Answer 1

well any word can be a regex pattern. The string “cat” could be compiled to a regex pattern. You could do something like:

def is_regex?(str)
  Regexp.new(str) rescue false
end