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I use normal hash blessing with a small improvement for avoiding bugs due to inheritance. Here's an example:
package Foo::Bar; my $pkg = __PACKAGE__; sub new { my ($class) = @_; my $self = {}; bless($self, $class); $self->{$pkg} = {}; return $self; } sub setvar { my $self = shift; my $priv = $self->{$pkg}; $priv->{variable} = 1; }

Each method has two variables, $self, which is the blessed hash and is used to call methods, and $priv, which is used to keep the private variables. So, if you use this class, 'variable' will be $self->{Foo::Bar}->{variable}. If a class using the same technique, say, Foo::Bar::Improved also defines the same variable, and inherits from Foo::Bar, then the variable be $self->{Foo::Bar::Improved}->{variable}. No conflict.

You won't see that in the module I posted here though, because it was written a long time ago when I didn't do this yet.


In reply to Re: How do YOU do OO in Perl? by vadim_t
in thread How do YOU do OO in Perl? by batkins

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