Basic HTML version of Foils prepared April 16,1996

Foil 12 Overview of References in Perl5

From Perl5 and Advanced Perl4 Features Computational Science for Information Age Course CPS616 Material -- April 16,1996. by Geoffrey C. Fox
1 Perl5 has a much richer and at times rather confusing syntax for references or pointers as in C or C++
2 This new feature is used to allow Perl variables to hold "handles" to objects and so implement an object oriented environment.
3 So in this sense pointers in Perl combine and do not "properly" distinguish classic pointers and objects.
4 There are hard references and soft or symbol table references
5 Hard references are new to Perl5 and much more powerful
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