Exercises, examples and other material relating to training module P209. This topic is presented on public courses
Perl Programming,
Perl bootcamp,
Learning to program in Perl,
Perl Programming
Background information
Some modules are
available for download as a sample of our material or under an
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Topics covered in this module
What are subroutines and why?.
The limitations of "single block code".
First use of subroutines.
Structured programming.
Object oriented programming.
Calling a subroutine.
Passing values out of subroutines.
Passing values in to subroutines.
Writing your own subroutine.
Passing parameters in.
Returning values.
Writing subroutines in a separate file.
Scope.
Global Scope.
my variables.
A test program:.
packages.
Calling objects.
Writing a class - an introduction.
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