Name
package
Synopsis
package namespace
Declares that the rest of the innermost enclosing
block, subroutine, eval, or
file belongs to the indicated
namespace. (The scope of a package declaration is thus the same as
the scope of a local or
my declaration.) All subsequent
references to unqualified global identifiers will be resolved by
looking them up in the declared packages symbol table. A package declaration affects only global
variables—including those you’ve used local on—but not lexical variables
created with my.
Using package without an
argument is possible, but since its semantics are unclear,
package; has been depracated in
Perl 5.8. If you intend to disallow variables that aren’t fully
qualified, use strict;
instead.
Typically, you put a package declaration as the first thing
in a file that will be included by the require or use operator, but you can put one
anywhere that a statement would be legal. When defining a class or
a module file, it is customary to name the package the same name
as the file, to avoid confusion. (It’s also customary to name such
packages beginning with a capital letter, because lowercase
modules are, by convention, interpreted as pragmas.)
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