Ruby: What's the proper syntax for a boolean regex method?

Question

What is the proper syntax for a method that checks a string for a pattern, and returns true or false if the regex matches?

Basic idea:

def has_regex?(str         


        

Answer 1

In the question you said:

... method that checks a string for a pattern, and returns true or false if the regex matches

As johannes pointed out String=~ returns nil if the pattern did not match and the position in the string where the matched word stared otherwise. Further he states in Ruby everything except nil and false behave like true. All of this is right.

However, they are not exactly true or false. Therefore, the last step is to coerce the value to be a Boolean. This is achieved by wrapping the result in double bangs returns a true.

def has_regex?(string)
    !!(string =~ /something/i)
end