other strategy for above solution is. 
@array_one = qw(one two three four);
@array_two = qw(three four five six);

%array_one = map {$_, 1} @array_one;
@difference = grep {!$array_one {$_}} @array_two;

print "@difference\n";

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In reply to Re: Answer: How Do I Compare Array A to Array B, removing B elements from A. by amitbhosale
in thread How Do I Compare Array A to Array B, removing B elements from A. by fuzzball

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