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Adam Kennedy


Object::Tiny - Class building as simple as it gets


  # Define a class
  package Foo;
  use Object::Tiny qw{ bar baz };
  # Use the class
  my $object = Foo->new( bar => 1 );
  print "bar is " . $object->bar . "\n";


There's a whole bunch of class builders out there. In fact, creating a class builder seems to be something of a right of passage (this is my fifth, at least).

Unfortunately, most of the time I want a class builder I'm in a hurry and sketching out lots of fairly simple data classes with fairly simple structure, mostly just read-only accessors, and that's about it.

Often this is for code that won't end up on CPAN, so adding a small dependency doesn't matter much. I just want to be able to define these classes FAST.

By which I mean LESS typing than writing them by hand, not more. And I don't need all those weird complex features that bloat out the code and take over the whole way I build modules.

And so, I present yet another member of the Tiny family of modules, Object::Tiny.

The goal here is really just to save me some typing. There's others that could do the job just fine, but I want something that does as little as possible and creates code the same way I'd have written it by hand anyway.

To use Object::Tiny, just call it with a list of accessors to be created.

  use Object::Tiny 'foo', 'bar';

For a large list, I lay it out like this...

  use Object::Tiny qw{

This will create a bunch of simple accessors, and set the inheritance to be the child of Object::Tiny.

Object::Tiny is empty other than a basic new constructor which does the following

  sub new {
      my $class = shift;
      return bless { @_ }, $class;

In fact, if doing the following in your class gets annoying...

  sub new {
      my $class = shift;
      my $self  = $class->SUPER::new( @_ );
      # Extra checking and such
      return $self;

... then feel free to ditch the SUPER call and just create the hash yourself! It's not going to make a lick of different and there's nothing magic going on under the covers you might break.

And that's really all there is to it. Let a million simple data classes bloom. Features? We don't need no stinking features.

Handling Subclasses

If the class you are using Object::Tiny for is already a subclass of another Object::Tiny class (or a subclass of anything else) it doesn't really work to make the class use multiple inheritance.

So in this case, Object::Tiny will create the accessors you specify, but WON'T make it a subclass of Object::Tiny.


Bugs should be reported via the CPAN bug tracker at


For other issues, contact the author.


Adam Kennedy <adamk@cpan.org>




Copyright 2007 Adam Kennedy.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

The full text of the license can be found in the LICENSE file included with this module.