[CM] range and period-length

[Rick Taube]

maybe something like this?

(define foo
   (let ((ini 10))
     (new heap :of (list (new cycle :of 1 :for 3)
                         (new cycle :of -1 :for 6))
          :for 1
          :returning (lambda (i) (prog1 ini (incf ini i))))))

(loop repeat 10 collect (next foo #t))

=> ((10 9 8 7 6 5) (4 5 6) (7 6 5 4 3 2) (1 2 3) (4 5 6) (7 6 5 4 3  
2) (1 0 -1 -2 -3 -4) (-5 -4 -3) (-2 -1 0) (1 0 -1 -2 -3 -4))




>
> when i have
>
> (new range
>       :initially 10
>       :stepping (new cycle :of (list (new cycle :of 1 :for 3)(new  
> cycle :of -1 :for 6)))
>       :for (new cycle :of '(3 6))))
>
> then the period-length correlates with the down- and up-direction:
>
> (next x t)
> => 10 11 12
> => 13 12 11 10 9 8
> => 7 8 9
> etc.
>
> but when i define
>
> (new range
>       :initially 10
>       :stepping (new heap :of (list (new cycle :of 1 :for 3)(new  
> cycle :of -1 :for 6)))
> )
>
> i don't know how to get the same correlation.
>
> i hope this was less abstruse..., johannes
>
>
>
> _________________________
>
> Johannes Quint
> Rilkestr.55
> D-53225 Bonn
> 0228 468256
> johannes.quint@web.de
> http://www.johannes-quint.de
>
>
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