How can I collapse double splat arguments into nothing?

Question

Splat-expanding an empty array in a method call effectively reduces the argument to nothing (empty parentheses added for clarity):

def foo()
end

def bar(*ar         


        

Answer 1

Try the below:

def baz()
end

def qux(**opts)
    baz(*opts)
end

qux

To see a bit more about how *hash works try the below:

h = {}
puts h # {}
puts *h # nothing output 
puts **h #{}