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Re^2: Array name with a Variable

by godevars (Initiate)
on Apr 17, 2008 at 20:29 UTC ( #681290=note: print w/replies, xml ) Need Help??

in reply to Re: Array name with a Variable
in thread Array name with a Variable

I tired this first and am running into an error. I am very new at Perl so may be missing how the subroutine is set up. I run my script witht he following (my actual arrays have many more words than that in my sample):
my @sets = (\@array1, \@array2, \@array3, \@array4 ); for my $h (0..$#sets) { for my $j ($h+1..$#sets) { compute_stuff($sets[$h], $sets[$j]); } } Sub union_intersection { my ($set1, $set2) = @_; my (%union, %intersect); foreach my $e (@$set1, @$set2) { $union{$e}++ && $intersect{$e}++ } my @intersect = sort keys %intersect; #print FILEOUT "@intersect\n"; print FILEOUT scalar @intersect; print FILEOUT "\n"; }
I get a syntax error on 2 lines. One on this line: my (%union, %intersect); The other near the last line (with '}'). Not sure why. In you example you did't have the semi-colon at the end and added it but that wasn't it. Also, don't I need to call the subroutine somewhere for it to work. Not sure if this an error on my part (e.g. not sure what compute_stuff should be doing). Thanks for the help-

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