While not $_ eq $co isn't incorrect, I rather write $_ ne $co.
Notice if there are duplicates, this will whack all of them.
That's easily solved: 
my $i = 0;
@allcompanies = grep {$_ ne $co or $i++} @allcompanies;

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In reply to Re^2: splice help - deleting specific element by JavaFan
in thread splice help - deleting specific element by kathys39

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