Hi all,
I am interest in solution of version-dependant methods in object instances. My idea is that 
my $instance1 = MyModule::new('1.0');
print $instance1->version();
#prints '1.0';
my $instance2 = MyModule::new('2.0');
print $instance2->version();
#prints '2.0';

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instances are of the same class, with the same methods formally, but with different subroutines (doing different things) realizing these methods.
My current solution is based on declarative global hashref $vers 
package MyModule;
our $VERSION = '2.0';
our $vers = {'1.0'=>{__PACKAGE__.'::version'=>\&version_1_0},
             '2.0'=>{__PACKAGE__.'::version'=>\&version_2_0}};

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,blessing proper part of $vers 
sub new {
  my $class = __PACKAGE__;
  my $version = shift || $VERSION;
  return bless({methods=>$$vers{$version}},$class);
}

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and on 
sub AUTOLOAD {
  my $self = $_[0];
  return &{$$self{methods}{$AUTOLOAD}}(@_);
}

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But i feel that AUTOLOADing is dirty for that, I wish some solution without it. Please, have you some hints or criticisms?

In reply to Howto implement versions of object instances by pajout

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