The $ is just a character in the string. Is there a reason you think it would need to be escaped?

How come the $ does not need to be escaped in this solution?

I thought you were just supposed to debug it LOL

this is the best

Superb!

isArray is a "class" method of Array object. You should use Array.isArray(someArray) to check is the instance array. Here is a link for documentation.

Thanks

This is the so called "ternary operator":
http://www.w3resource.com/ruby/ruby-ternary-operator.php

condition ? something : something-else

is a shortcut for:

if condition
  something
else
  something-else
end

what does ? and : mean in ruby