Module Ycombinator {
	\\ y() return value. no use of closure
	y=lambda (g, x)->g(g, x)
	Print y(lambda (g, n as decimal)->if(n=0->1, n*g(g, n-1)), 10)=3628800 ' true
	Print y(lambda (g, n)->if(n<=1->n,g(g, n-1)+g(g, n-2)), 10)=55 ' true
	
	\\ Using closure in y, y() return function
	y=lambda (g)->lambda g (x) -> g(g, x)
	fact=y((lambda (g, n as decimal)-> if(n=0->1, n*g(g, n-1))))
	Print fact(6)=720, fact(24)=620448401733239439360000@
	fib=y(lambda (g, n)->if(n<=1->n, g(g, n-1)+g(g, n-2)))
	Print  fib(10)=55
	}
Ycombinator