*blink* *blinkblink*

Wow. That takes my vote for most obfuscated-but-didn't-mean-to code of the day.

First, a rewrite of the code, so we can start to see what's going on: 

$listA[0] = [qw(1 foo bar)];
$listB[0] = [qw(1 bar baz)];

print "First record from \@listA: $listA[0][0]\n";

@listToExpire = grep { } @listB;

[download]
The {} say that you need to do some stuff on each element of @listB. However, your code is of the form grep ( @listB ); Are you sure this is what you want?

Update: Try the following: 

my @listToExpire = grep { my $a = $_; (grep /$a/, @listA) ? () : ($a);
+ } @listB;

[download]
Interestingly enough, you can substitute map for the grep. Of course, I wrote it initially with map, cause that's how I think. TMTOWTDI.

------
We are the carpenters and bricklayers of the Information Age.

Don't go borrowing trouble. For programmers, this means Worry only about what you need to implement.

In reply to Re: Trying to get fancy... by dragonchild
in thread Trying to get fancy... by Purdy

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