The B::Deparse module really helps figure this sort of thing out.
Here's the test code I wrote: 

#!/usr/bin/perl -w

use strict;

my @data = ([3], [8], [5]);
my $sum += $_->[0] for @data;
print "Total: $sum\n";

[download]

And perl -MO=Deparse,p /tmp/try spits out: 

my(@data) = ([3], [8], [5]);
foreach $_ (@data) {
    my $sum += $$_[0];
}
print "Total: $sum\n";

[download]

I agree though, weird that use strict doesn't complain.

In reply to Re: 'my' headache...why doesn't this work? by mla
in thread 'my' headache...why doesn't this work? by S_Shrum

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