Basic HTML version of Foils prepared Sept 20 97

Foil 12 Overview of References in Perl5

From Perl5 and Advanced Perl4 Features Computational Science for Information Age Course CPS616 -- Sept 20 97. by Geoffrey C. Fox,Nancy McCracken,Tom Scavo
Perl5 has a rich and at times rather confusing syntax for references or pointers
This new feature is used to allow Perl variables to hold "handles" to objects and so implement an object-oriented environment.
So in this sense pointers in Perl combine and do not "properly" distinguish classic pointers and objects.
There are hard references and soft or symbol table references
Hard references are new to Perl5 and much more powerful

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