RosettaCodeData/Task/Y-combinator/J/y-combinator-1.j

Y=. '('':''<@;(1;~":0)<@;<@((":0)&;))'(2 : 0 '')
  (1 : (m,'u'))(1 : (m,'''u u`:6('',(5!:5<''u''),'')`:6 y'''))(1 :'u u`:6')
)
September Morn Update 2019-09-12 10:33:56 -07:00			`Y=. '('':''<@;(1;~":0)<@;<@((":0)&;))'(2 : 0 '')`
			(1 : (m,'u'))(1 : (m,'''u u`:6('',(5!:5<''u''),'')`:6 y'''))(1 :'u u`:6')
			`)`