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Re: Module vs Singleton

by Anonymous Monk
on Jul 15, 2011 at 17:10 UTC ( [id://914659]=note: print w/replies, xml ) Need Help??


in reply to Module vs Singleton

Tutorials: Modules: How to Create, Install, and Use: Creating and Distributing Modules: Simple Module Tutorial

http://learn.perl.org/books/beginning-perl/ Chapter 10: Modules, Chapter 11: Object-Oriented Perl

In perl, you use package to create namespaces 

package Foo; sub new {} # Foo::new, Foo->new
package Bar; sub new {} # Bar::new, Bar->new

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A module is a namespace associated with a file (Foo.pm) ...

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Re^2: Module vs Singleton
by Your Mother (Archbishop) on Jul 15, 2011 at 21:26 UTC

    Just wanted to clarify this–

    package Foo; sub new {} # Foo::new, Foo->new

    Those calls to new are not equivalent–

    ~>perl -lwe 'BEGIN{ package Foo; sub new { print shift } } Foo->new; F
+oo::new'
Foo
Use of uninitialized value in print at -e line 1.

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