[REBOL] Re: On ordinal and cardinal numbers...
From: agem:crosswinds at: 7-Jul-2001 17:23
RE: [REBOL] Re: On ordinal and cardinal numbers...
reading Joel he really complains two things:
a) stuff is not zero-base
b) Joel would be pretty like modulo-arithmetik.
i suggest a ring!
make ring! 5
could be
..
0 1 2 3 4
5 6 7 8 9
..
or
..
-4 -3 -2 -1 0
1 2 3 4 5
..
that means with modulo we could say
zeroth: :last
while usual c-programming works:
while[index < length? block][..]
will never touch last!
since joel found explaining modulo with a clock
works great, how about
context clockwise[pick: .. skip: .. ..]
ticktack: does bind-to clockwise[
forever[ probe first tick tick: next tick ]
]
?
a more complete (complex?) version
could really have ring! datatype,
which could be a special reference.
a: [1 2 3 4]
b: make ring! a
skip b 24
would work
a: make ring! 4
would give us a clock-type counter
with no buffer-memory.
maybe even
a: make clock! [24 60 60 decimal!]
there are some uses.. :)
Drawback: Joels char-counter
would not throw exception on overflow.
modulo with subrange just for 0?
hm, or 7 as Joel noted.
[lmecir--mbox--vol--cz] wrote:
> Hi all,
>
> is there a chance that Carl gets something more people can agree upon? My
> idea is to have something like these:
>
;-) Volker
--zero is the highest number
