| Subject: | Consider implementing overloaded mathematical and string operations |
Let's say we want to see if any of $a, $b, or $c are even numbers. Right now, this can be done with:
if ( any($a % 2, $b % 2, $c % 2) == 0 ) { ... }
But it would be nice if this worked:
if ( any($a, $b, $c) % 2 == 0 ) { ... }
It works in Perl 6:
perl6 -e'my ($a,$b,$c)=(1,2,3); say !!(any($a, $b, $c) % 2 == 0)'
The basic idea would be that when a mathematical or string operation is performed on a junction, a new junction is returned of the results.
any(1, 2, 3) * 2 ====> any(2, 4, 6)
The tricky bit comes when you get an operation on two junctions:
any(1, 2, 3) * any(2, 3) ====> any(2, 4, 6, 3, 6, 9)
The latter result could be "optimized" to any(2, 4, 6, 3, 9).