in reply to Grepping on array
Howdy!
my %first = map { $_ => 1 } @arr2; @result = grep !exists $first{$_}, @arr1;
%first is a hash whose keys are the distinct values in @arr2. The grep returns a list of the values in @arr1 that don't exist in %first, thus eliminating values in @arr2.
yours,
Michael
Michael
In Section
Seekers of Perl Wisdom