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Making Perl class definitions more conventional and shorter

Perl 5's object oriented capabilities are excellent - but often a little longwinded, and quite easy to get wrong. Moose sells itself as "postmodern object system for Perl 5 that takes the tedium out of writing object-oriented Perl"; it's available for download from the CPAN under same license as Perl itself, and provides a good solution for certain groups of people. There does, however, seem a lack of "start here" examples ... so I've added a few to the web site.

Simplest Moose class - setting up an automatic constructor with two properties - [source].

Adding default values - [source].

Using Moose to check data types - [source].

Calling automatically generated functions, and with read only and read-write settings - [source] This is the first practical example as it sets up the access to properties via methods rather than direct variable access

Inheritance (using the extends keyword) and roles (i.e. interfaces / the requires keyword) in Moose - [source].

Getters, setters and defaults in Moose - [source].

Additional functionality - adding a second method with the after keyword - [source].

Would I use Moose on a project? If there were many classes to be written, and I was writing from scratch I might well give it some careful thought. It is just a wrapper around a blessed hash, but sometimes the wrapping can make all of the difference!
(written 2010-12-20, updated 2010-12-24)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
P218 - Perl - More Objects
  [4098] Using object orientation for non-physical objects - (2013-05-22)
  [4096] Perl design patterns example - (2013-05-20)
  [3941] Building an object based on another object in Perl - (2012-12-03)
  [3581] Perl - calls to methods that use => - what do they mean? - (2012-01-16)
  [3377] What do I mean when I add things in Perl? - (2011-08-02)
  [3098] Learning Object Orientation in Perl through bananas and perhaps Moose - (2010-12-21)
  [2972] Some more advanced Perl examples from a recent course - (2010-09-27)
  [2876] Different perl examples - some corners I rarely explore - (2010-07-18)
  [2811] Igloos melt in the summer, but houses do not - (2010-06-15)
  [2717] The Multiple Inheritance Conundrum, interfaces and mixins - (2010-04-11)
  [2651] Calculation within objects - early, last minute, or cached? - (2010-02-26)
  [2427] Operator overloading - redefining addition and other Perl tricks - (2009-09-27)
  [1949] Nuclear Physics comes to our web site - (2008-12-17)
  [1819] Calling base class constructors - (2008-10-03)
  [1665] Factory method example - Perl - (2008-06-04)
  [1664] Example of OO in Perl - (2008-06-03)
  [1435] Object Oriented Programming in Perl - Course - (2007-11-18)
  [1320] Perl for Larger Projects - Object Oriented Perl - (2007-08-25)
  [1217] What are factory and singleton classes? - (2007-06-04)
  [930] -> , >= and => in Perl - (2006-11-18)
  [831] Comparison of Object Oriented Philosophy - Python, Java, C++, Perl - (2006-08-13)
  [656] Think about your design even if you don't use full UML - (2006-03-24)
  [592] NOT Gone phishing - (2006-02-05)
  [588] Changing @INC - where Perl loads its modules - (2006-02-02)
  [531] Packages in packages in Perl - (2005-12-16)
  [246] When to bless a Perl variable - (2005-03-15)
  [227] Bellringing and Programming and Objects and Perl - (2005-02-25)

P310 - Perl - Moose

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