[ next ] [ prev ] [ contents ] | Invitation To Ruby |
1: #!/usr/bin/env ruby 2: 3: def lazy_list_of_squares(n) 4: [n*n, proc { lazy_list_of_squares(n+1) }] 5: end 6: 7: list = lazy_list_of_squares(0) 8: 9: 10.times { 10: puts list[0] 11: list = list[1].call 12: } |
0 1 4 9 16 25 36 49 64 81 |
[ next ] [ prev ] [ contents ] | Copyright 2002 by Jim Weirich. All rights reserved. |