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Hi Zentara, Thanks for all your posts. Let me make my requirement very simple. Forget about object oriented programming a also whether is derived from Tk::Tree or not. Just think about procedural programming. I just need to build the logic where the called function (i.e getItemStyle )can stringify the passed parameter set and make them the key of a hash. The value of the hash shoud be the created ItemStyle object. I am trying to write the pseudocode below :

&getItemStyle($tree, 'text', -anchor => 'w',-fg => 'red'); sub getItemStyle { my $obj = shift; ## holds $tree my $type = shift; ## holds text ## Now stringify the "-anchor =>'w' -fg => 'red' ## and make them a hash key and create the ItemStyle. ## So that next time if I call getItemStyle with same ## same parameters(-anchor and -fg ), it does not create ## the ItemStyle all over again and checks the hash if ## the paramters exist as a key then returns its value. ## Also we need to sort the parameters so that if we ## cal getItemStyle with the same two parameters and ## reverse the order of mentioning them (-fg => red , ## -anchor =>'w') , it considers it as the same call ## as (-anchor => 'w', -fg =>red) happened earlier .

Hope the problem is clear now. Main thing is to elegantly and easily stringify the parameters, use them as a hash key, store the object in the value corresponding to that key and return. If it is a new parameter set, then make a new key and create the itemstyle.

In reply to Re^4: ItemStyle causing high memory consumption by ghosh123
in thread ItemStyle causing high memory consumption by ghosh123

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