How to retrieve right info from list of anonymous hashes

[gepebril69]

Hi there,

I want to use Win32::Process::Info to get information if a PID of a process is in use or not, without using the TASKLIST command in Windows which results depends on the language of your OS :S

I've tried the following code, which gave me part of the answer of the puzzle

 use Win32::Process::Info;
$pi = Win32::Process::Info->new ();
$MyPID = $$;
@info = $pi->GetProcInfo ($$);

HASH(0x2954c14) which seems to be a list of anonymous hashes The module in CPAN don't give an example of how to do this and Googling for info to retrieve info from such a construction, was not successful. I understand the concept of hashes, but not to this deep level. Can somebody help me out.

[moritz]

perlreftut teaches you how to deal with such hash references. To get a quick overview what's inside a variable, I can recommend Data::Dumper, which produces perl code that reproduces the original data structure.

use Data::Dumper;
print Dumper \@info;

[JavaFan]

The module in CPAN don't give an example of how to do this

Well, it would be too much to expect from every CPAN module that uses hashes to explain to the user to access a hash.

Try something like:

foreach my $process (@info) {
    while (my ($k, $v) = each %$process) {
        print "$k => $v\n";
    }
    print "\n";
}

Or use your favourite serializer.