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B.3. Packages
Packages[400] allow you to
compartmentalize the namespaces. Imagine that you have ten
programmers all working on one big project. If you use the global
names $fred, @barney,
%betty, and &wilma in your
part of the project, what happens when I accidentally use one of
those same names in my part?
Packages let us
keep these separate; I can access your $fred, and
you can access mine, but not by accident. Packages are needed to make
Perl scalable, so that we can manage large programs.
[400]The name "package" is perhaps an
unfortunate choice, in that it makes many people think of a
packaged-up chunk of code (in Perl, that''s a module or a
library). All that a package does is define a
namespace (a collection of global symbol
names, like $fred or
&wilma). A namespace is not
a chunk of code.
