grep doesn't do what you think it does. For a start you're assigning the return value to a scalar, but it returns a list.

I think that what you want is something like this:

my @in = qw(bga cbga test);
my @out;
my @test = qw(bga);

foreach my $test (@test) {
  push @out, grep { /$test/ } @in;
}

[download]

But I'm slightly worried by your phrase "exact pattern match". Perhaps what you really want is:

my @in = qw(bga cbga test);
my @out;
my @test = qw(bga);

foreach my $test (@test) {
  push @out, grep { $_ eq $test } @in;
}

[download]
--
<http://www.dave.org.uk>

"The first rule of Perl club is you don't talk about Perl club."

In reply to Re: How to look for exact pattern match by davorg
in thread How to look for exact pattern match by juo

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