Keyword Arguments (2)


def bar(a:,b:0)
  ...
end

bar()		# error! a is mandatory
bar(1)		# error! no positional argument
bar(a:1)	# a=1,b=0
bar(a:1,b:2)	# a=1,b=2
bar(b:2)	# error! a is mandatory
bar(c:2)	# error! c is not defined