hash_options.rb

def hash_options(args, defaults)
  args.assert_valid_keys(*defaults.keys)
  defaults.merge(args).values
end

def my_method(args = {})
  some, other, blah =
    *hash_options(args, :some => 'value', other: 'value 2', blah: 'value 3')

  # Use
  if some
    # ...
end