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Re: Hash of Hashes, referencing, dereferencing and Net::SNMP

by matija (Priest)
on Oct 06, 2004 at 12:16 UTC ( #396958=note: print w/ replies, xml ) Need Help??


in reply to Hash of Hashes, referencing, dereferencing and Net::SNMP

Well, the problem is here:

$results_table->{$$group}}->{$$site_name} = { sysobjid => "unknown", snmp_status => "NOT OK +", };
Contrary to what might be convenient, you are assigning a whole new hash reference (and leaving the old hash orphaned and subject to garbage collection).

You will have to break the statement down into two parts:

results_table->{$$group}}->{$$site_name}->{sysobjid}="unknown; results_table->{$$group}}->{$$site_name}->{snmp_status}="NOT OK";


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Re^2: Hash of Hashes, referencing, dereferencing and Net::SNMP
by Smylers (Pilgrim) on Oct 06, 2004 at 15:28 UTC
    You will have to break the statement down into two parts:
    results_table->{$$group}}->{$$site_name}->{sysobjid}="unknown; results_table->{$$group}}->{$$site_name}->{snmp_status}="NOT OK";

    If you want to put the convenience back then use a fake loop to avoid the repetition:

    for ($results_table->{$$group}{$$site_name}) { $_->{sysobjid} = 'unknown'; $_->{snmp_status} = 'NOT OK'; }
    Smylers
Re^2: Hash of Hashes, referencing, dereferencing and Net::SNMP
by revdiablo (Prior) on Oct 06, 2004 at 18:08 UTC
    You will have to break the statement down into two parts

    Another approach would be using a hash slice:

    my $site = results_table->{$$group}->{$$site_name}; # for convenience @{ $site }{("sysobjid", "snmp_status")} = ("unknown", "NOT OK");

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