On 07/26/2005 10:39 AM, David Abrahams wrote:
Larry Evans <cppljevans@cox-internet.com> writes:
On 07/26/2005 07:25 AM, David Abrahams wrote:
Alex Mendes da Costa <alexmdac@gmail.com> writes:
The iterator that I am proposing would provide the sequence (1,10), (2,10), (1,20), (2,20).
Oh, you want a cross-product iterator. Interesting idea.
BTW, the J or apl term for this would be "outer-product" (produced with '/' operator) applied to the "append" operator (','):
,/
Wow, I'm impressed. I usedta know APL inside-out, but it's been 25 years. But that's just an ASCII translation of the real symbol, no?
No, actually J is an ascii translation of apl. I should have been clearer ;( I originally started to use apl and %o% to "represent" the 'jot' apl symbol, but I figured referring to J with it's ascii characters would be easier and *hopefully* easier to read. Anyway, in apl, it would be: S1 %o%., S2 where, as mentioned, %o% represents to apl 'jot' symbol. The following is another reference to "outer-product" (and also where I got the idea to use %o%): http://www.math.unm.edu/splus/node37.html