Keyword Arguments


def foo(a,b=0,c:4)
  ...
end

foo(1)		# a=1,b=0,c=4
foo(1,2)	# a=1,b=2,c=4
foo(1,c:2)	# a=1,b=0,c=2
foo(1,2,c:3)	# a=1,b=2,c=3