Igloos melt in the summer, but houses do not

In Germany, a house will grow in value over the years (perhaps current economic climate excluded) but an Igloo will loose all of its value in summer (it will melt!). Frankfurt - not an igloo in site

From last week's Perl course, where I briefly covered object orientation in Perl (the course briefing only asked me to cover it briefly), I present [here] my Igloo and House example - defining classes of house and igloo, and providing different methods to get the value of each type after a number of years.

I also went on to separate out the class(es) from the main code in a further example - the main code is [here] and the extra classes are [here]. You'll note that I've inherited all classes from a base class thing into which I wrote an AUTOLOAD method. That way, I can set and get all my properties (attributes) of all the object types without having to write lots of accessor methods. Perl is REALLY neat, if a trifle unconventional at time!

Illustration - a variety of housing in Frankfurt ... but none of it is igloos!

(written 2010-06-15)

Associated topics are indexed under

P218 - Perl - More Objects
  [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)
  [3097] Making Perl class definitions more conventional and shorter - (2010-12-20)
  [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)
  [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)

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Some other Articles

switch and case, or given and when in Perl
Python - splitting and joining strings
Iterating over a Perl list and changing all items
What is Perl?
Igloos melt in the summer, but houses do not
A course review - for the tutor to complete
Frankfurt in 90 minutes
From home to Nurnberg - journey pictures
Canal through Melksham - the options and issues
Macho matching - do not do it!

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