Prettier (?) elsif

elsif.rb

puts case true
when true == false
  "nope"
when false == true
  "also nope"
when [ :a ].empty?
  "nope as well"
when nil.nil?
  "yep!"
when false.nil?
  "nopers"
else
  "uh-uh"
end

Yeah, which raises an interesting point - where if/elsif tests the truthiness of its parameter, this actually tests against the true singleton versus anything else. So don't use it with .xhr? (rails/rails#5329) :)

Honestly I think the reason it isn't an idiom in ruby is that elsif strings read just as well.