[REBOL] Re: En Masse block operations
From: tim:johnsons-web at: 16-Oct-2001 11:00
On Tue, Oct 16, 2001 at 11:18:05AM -0600, Gregg Irwin wrote:
> Hi Tim,
>
> I think map will do what you want.
Yes indeed. It's exactly what I want. :>)
==>>I note a bonus: I think I'm seeing how one passes a function
as an argument.
Thank you Gregg
> ; Larry Palmiter's version but Ladislav and Andrew also have them
> map: func [fn blk args /local result][
> result: copy []
> repeat el blk [append/only result fn :el args]
> return result
> ]
>
> >> test: [[1 2 3 4] [5 6 7 8] [9 10 11 12] [13 14 15 16 17] "one"]
> == [[1 2 3 4] [5 6 7 8] [9 10 11 12] [13 14 15 16 17] "one"]
> >> map :next test none
> == [[2 3 4] [6 7 8] [10 11 12] [14 15 16 17] "ne"]
> >> map :head test none
> == [[1 2 3 4] [5 6 7 8] [9 10 11 12] [13 14 15 16 17] "one"]
>
> --Gregg
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--
Tim Johnson <[tim--johnsons-web--com]>
http://www.johnsons-web.com
