Doubt in References and complex datastructures

["Deepak Mallya" <suppressed>]

Hi,

    When I try to use complex data structures I get an error saying

Use of uninitialized value in string at C:\Documents and Settings\deepm\My Documents\practice.pl line 29, <FILE> line 1.

 

The line of code is as follows:-

for ($i=0;$i<=$#terms;$i++)
{
    $wordlistref->{$terms[$i]}->{"postingsref"}->{"$doc"}->{"d1"}->{$termfreq}++;
}

 

Can anyone help me on this..Do I need to initialise every single hash ???cant I use it as above

 

Thanks,

Deepak