I'm still a newbie @ references and data structures myself, but I've found the following web pages useful:
http://www.perldoc.com/perl5.8.0/pod/perlreftut.html http://www.perldoc.com/perl5.8.0/pod/perldsc.html http://www.perldoc.com/perl5.8.0/pod/perllol.html And, as always, by recursively following the references on these web pages you can probably find a thousand pages of information overload. :-D -Dan On Wed, 2003-11-12 at 20:28, Jason Normandin wrote: > Hey Group > > I am new to hashes, so please be kind : ) > > I am trying to create a hash of hash's with the following characteristics: > > 1. The outer hash has a unique key called $ELEMENT > 2. The value of the outer hash is a key to the innner hash called $DATE > 3. The value of the inner hash is a value called $ERROR > > I need to loop through some data which has multipe $DATE and $ERROR entries > per $ELEMENT and add them to the $ELEMENT hash based on the $ELEMENT value. > > Eg. Element Fred would have multiple DATE entries. Each date would have one > error. > > I then need to iterate through the hash and display the element name( only > once if possible ), each timestamp and error. > > Ex. > > ELEMENT DATE ERROR > jason Jun 1, 2003 No Data > Jun 4,2003 No Response > July 1,2003 No Data > fred Jan 2, 2002 No Response > Jany 4,2002 Illegal value > .... > .. > > This is just a dummy example. The real error types range and are unique. > > Can anyone help with my constructing such a hash ? > > I tried the following, which sucessfully creates the outerhash, but only > populates one value for each date, error pair: > > $snmpErr{$ELEMENT}= > { > name => $ELEMENT, > date => $DATE, > error => $ERROR > }; > > I then loop through via: > > foreach my $entry (keys %snmpErr) > { > $el = $snmpErr{$entry}{name}; > $ts = $snmpErr{$entry}->{date}; > $er = $snmpErr{$entry}->{error}; > } > > How far off am I ? : ) > > Thanks for the help all !! > > - Jason > > -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
