On Mon, Mar 16, 2009 at 09:24:58PM -0700, Jon Lang wrote: : Darren Duncan wrote: : > Jon Lang wrote: : >> Larry Wall wrote: : >>> This is basically a non-problem. Junctions have one public method, : >>> .eigenstates, which is vanishingly unlikely to be used by accident by : >>> any mere mortal any time in the next 100 years, give or take a year. : >>> If someone does happen to be programming quantum mechanics in Perl 6, : >>> they're probably smart enough to work around the presence of a : >>> reserved--well, it's not even a reserved word-- a reserved method name. : >> : >> Actually, the problem isn't with '.eigenstates'; the problem is with : >> '.perl'. If I'm viewing a Junction of items as a single indeterminate : >> item, I'd expect $J.perl to return a Junction of the items' perl by : >> default. Admittedly though, even that isn't much of an issue, seeing : >> as how you _can_ get that result by saying something to the effect of : >> "Junction of $J.eigenstates.«perl" - the only tricky part being how to : >> decide which kind of junction to use (e.g., any, all, one, none) when : >> putting the perl-ized eigenstates back together. (And how _would_ you : >> do that?) This would represent another corner-case where the : >> programmer would be tripped up by a simplistic understanding of what a : >> Junction is; but being a corner-case, that's probably acceptable. : > : > I would assume that invoking .perl on a Junction would result in Perl code : > consisting of the appropriate any/all/etc expression. -- Darren Duncan : : Tough to parse, though; and feels like a kludge. I expect better of Perl 6.
I think I've mentioned before that .perl autothreads. It's the final (low-level) stringification of a junction that slaps the appropriate quantifier around that, I suspect. So maybe $j.Str returns the eigenstring, while prefix:<~> autothreads. Or maybe there's a method named .eigenstring or some such for use by print and say and anyone else who absolutely must end up with something printable. Larry
