Question

I’ve seen Ruby code in which there are only two double quotes (“”) on a line. What does that line do?

Answer 1

I assume you might have seen a code like this.

def some_method
   #do some operations
   ""
end

In this context, it means that the method is returning an empty string. In Ruby, the last evaluated operation in a method is what is returned from that method. So in this case, it returns an empty string literal.