Ruby Oneline Rescue

Question

I recently learned that you can use rescue on a line of code in case something goes wrong on that line (see http://www.rubyinside.com/21-ruby-tricks-902.html Tip #2

Answer 1

This specific example can now be achieved with Ruby 2.3's dig method.

name = obj.dig 'key', 'key2', 'name'

This will safely access obj['key']['key2']['name'], returning nil if any step fails.

(In general, it's usually advised to use exceptions only for real, unanticipated, errors, though it's understandable in an example like this if the syntax makes it cumbersome.)