Ruby check if nil before calling method

Question

I have a string in Ruby on which I\'m calling the strip method to remove the leading and trailing whitespace. e.g.

s = \"12345 \"
s.strip

H

Answer 1

You can use method try from ActiveSupport (Rails library)

gem install activesupport

require 'active_support/core_ext/object/try'
s.try(:strip)

or you can use my gem tryit which gives extra facilities:

gem install tryit

s.try { strip }