Sometimes you may compose a binary representation of number (e.g. '0b010101111111') (docs: perlnumber), eval it, use bitwise op, and return to binary representation using sprintf "%b", with '0${len}' for leading zeroes. 
#!/usr/bin/perl -l

use strict;
use warnings;

my @array1 = (0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1);
my @array2 = (0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1);

my $bits1 = eval '0b' . join '', @array1;
my $bits2 = eval '0b' . join '', @array2;

my $bitsResult = $bits1 | $bits2;

my $len = scalar @array1;

my @arrayResult = split //, sprintf "%0${len}b", $bitsResult;

print "\$bits1:[$bits1], \$bits2:[$bits2], \$bitsResult:[$bitsResult]"
+;
print "Result: ", join(", ", @arrayResult), "\n";

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OUTPUT:
$bits1:[1407], $bits2:[855], $bitsResult:[1919]
Result: 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1

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In reply to Re: merging two arrays with OR operation by rsFalse
in thread merging two arrays with OR operation by Anonymous Monk

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