[rules-users] compare attributes form similar type

[kashif10]

Actually I need to compare same type of facts in session with each other.

Lets say 10 Person object gets inserted into session.
I want to compare them with each other first. To find which one born first
in the measuring period (lets say in 2012)
After wards I need to compare attribute of that fact,like gender, name etc. 


Currently I am using eval to call on list of person facts to find the person
first born in period & afterwards 

$P : person (eval(PersonArray.bornIn($P, "1/1/2012" , "12/31/2012" ) ) ,  
gender == male)

I want to find a better way  as compare to use eval.



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