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This is a FAQ. Please research using perldoc -q and use super search before asking a question...

my %hash; $hash{$_}=1 foreach @array_1; @array_2=grep($hash{$_},@array_2);
When you do read the FAQ's you will find a number of variants of the above along with suggestions about how to do this with various constraints.

Also, perl is not restricted to C's overworked and confusing for() syntax. Your for loops above would be much simpler (and would involve less typing, and be less susceptable to fence pst errors) if done as follows

#for (my $search =0; $search<scalar @array1; $search++) # blech, this +isnt C you know for my $search (0.. $#array1) # ahhh thats m +uch better

Sorry to repeat other peoples responses, I failed to press "submit" and then went on to other things.... :-)

--- demerphq
my friends call me, usually because I'm late....

In reply to Re: subtract one array from another by demerphq
in thread subtract one array from another by Anonymous Monk

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