How to calculate how many years passed since a given date in Ruby?

Question

This question was here for other languages, so let here be one for Ruby.

How do I calculate number of complete years that have passed from a given date? As you prob

Answer 1

Same idea as FM but with a simplified if statement. Obviously, you could add a second argument instead of using current time.

def age(birthdate)
  now = DateTime.now
  age = now.year - birthdate.year
  age -= 1 if(now.yday < birthdate.yday)
  age
end