Hi,
Andrew Savige wrote:
> In Pugs, you can process a simple list of lists like this:
>
> my @lol = ( [ '1a', '1b' ], [ '2a', '2b' ], [ '3a', '3b' ] );
> for @lol -> $t { say "1st='$t[0]' 2nd='$t[1]'" }
>
> Yet the $t[0] and $t[1] look untidy to me, so I'd prefer to specify
> that the for closure block takes two parameters, something like:
>
> for ???? -> $x, $y { say "1st='$x' 2nd='$y'" }
>
> But I have no clue what to put in place of ???? above.
for @lol -> [$x,$y] { say "1st='$x' 2nd='$y'" }
(Assuming that the syntax for unpacking array parameters wasn't changed
when I weren't looking.)
You can read more about this in S06, "Unpacking array parameters" [1].
--Ingo
[1]
http://dev.perl.org/perl6/doc/design/syn/S06.html#Unpacking_array_parameters
