Get the Keys in the Hash

vishi83 has asked for the wisdom of the Perl Monks concerning the following question:

hi great ppl !!1

Look this,


$VAR1 = {
          'id' => {
                            'Extra' => 'auto_increment',
                            'Type' => 'int(11)',
                            'Field' => 'id',
                            'Default' => undef,
                            'Null' => '',
                            'Key' => 'PRI'
                          },
          'name' => {
                              'Extra' => '',
                              'Type' => 'varchar(50)',
                              'Field' => 'name',
                              'Default' => '',
                              'Null' => '',
                              'Key' => 'UNI'
                            }
        };
[download]

It must be clear that i'm printing this hash ref with a dumper ..

I dint give my code, coz i hav used lot of my own modules in that .. so thot it would be little confusing to all ...

I hav generated this hash from a db table ...For this i have written a method ('fetchit')...
this method is used like this..

$hashref = $object->fetchit($tablename);
[download]

so this method will return the table desc as a hash..

NOw i got struck in one thing.. please help me in this.. I want to print only the FIELD names present inside that hash.. here the field names are id and name ..

How can i do that ??? .. please help me

Thanks in advance

A perl Script without 'strict' is like a House without Roof; Both are not Safe;

Comment on Get the Keys in the Hash Select or Download Code

Replies are listed 'Best First'.
Re: Get the Keys in the Hash by Corion (Patriarch) on Nov 05, 2005 at 15:36 UTC
tyes References Quick Reference will likely be of help and will explain to you how to handle the references. In short: `keys %{ $hashref }` [download] will give you all keys in your hash(reference).	[reply] [d/l]
Re: Get the Keys in the Hash by Trix606 (Monk) on Nov 05, 2005 at 15:18 UTC
If you want the keys to a hash, use `keys %my_hash` Look at `perldoc -f keys` for the details.	[reply] [d/l] [select]


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