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
1 Perl5 has a rich and at times rather confusing syntax for references or pointers
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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