On 1/25/2011 6:07 PM, Rob and Shawn wrote:
Hey Mike
What you have written can be fixed by changing it to
for (my $num = 0; $num <= $#linkder; $num++) {
print STDERR "@{$linkder[$num]}\n";
}
or even
for (my $num = 0; $num <= $#{$links}; $num++) {
print STDERR "@{$links->[$num]}\n";
}
but it is much clear and more Perlish to write
foreach my $link (@$links) {
print STDERR "@{$link}\n";
}
Remember: everywhere you could put a simple variable identifier you can
put a reference. Surrounding it in braces is always valid and helps
resolve ambiguity, so @linkder is the same as @{linkder} is the same as
@{$links}. Likewise, $linkder[$num] (or $links->[$num]) is an array
reference, and can be dereferenced with @{$linkder[$num]}.
HTH,
Rob
You also might want to look into Data::Dumper to see exactly what you're
working with.
Off the top though:
map {@$_} @$arr
might be a start.
_____________________________________________
Thank you Rob and Shawn. It worked well.
I can't claim I know fully why, but it worked.
I sure hope Perl6 gets rid of dereferencing.
Mike Flannigan
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