On Thu, May 28, 2009 at 10:51:33AM -0400, John Macdonald wrote:
: Yes. The full expression in raw APL for n! is:
: (where <i> is the Greek letter iota - <iota>n is Perl's 1..$n).
Only if the origin is 1. This breaks under )ORIGIN 0. <cough> $[ </cough>
By the way, the assumption here is that everyone can process Unicode,
so it's fine to write */⍳n. :)
Note that that's the APL iota U+2373, not any of the other 30 or so
iotas in Unicode. :/ Well, okay, half of those have precomposed
accents, but still...