What is a elegant way in Ruby to tell if a variable is a Hash or an Array?

Question

To check what @some_var is, I am doing a

if @some_var.class.to_s == \'Hash\' 

I am sure there is a more elegant way to check if

Answer 1

Hash === @some_var #=> return Boolean

this can also be used with case statement

case @some_var
when Hash
   ...
when Array
   ...
end