Learning Perl Objects, References, and Modules

backstop method   2nd  

basename subroutine (File::Basename)  

BEGIN block

       importing subroutines  

       purpose  

       setting constants  

       setting paths  

       use list and  

       use operation and  

behavior

       classes and  

       instances and  

       passing as parameter  

       subroutine references and  

       testing with isa and can methods   2nd  

blessed references

       indirect object syntax and  

       instances as   2nd   3rd  

       isa method and  

       nested object destruction  

       ref operator and  

       returning  

block form

       grep operator  

       map operator