|
Training, Open Source Programming Languages This is page http://www.wellho.net/mouth/2811_Igl ... o-not.html Our email: info@wellho.net • Phone: 01144 1225 708225 |
| For 2023 (and 2024 ...) - we are now fully retired from IT training. We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk. Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active! I am also active in many other area and still look after a lot of web sites - you can find an index ((here)) |
|
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!).  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 as below, or enter http://melksh.am/nnnn for individual articles P218 - Perl - More Objects[227] Bellringing and Programming and Objects and Perl - (2005-02-25) [246] When to bless a Perl variable - (2005-03-15) [531] Packages in packages in Perl - (2005-12-16) [588] Changing @INC - where Perl loads its modules - (2006-02-02) [592] NOT Gone phishing - (2006-02-05) [656] Think about your design even if you don't use full UML - (2006-03-24) [831] Comparison of Object Oriented Philosophy - Python, Java, C++, Perl - (2006-08-13) [930] -> , >= and => in Perl - (2006-11-18) [1217] What are factory and singleton classes? - (2007-06-04) [1320] Perl for Larger Projects - Object Oriented Perl - (2007-08-25) [1435] Object Oriented Programming in Perl - Course - (2007-11-18) [1664] Example of OO in Perl - (2008-06-03) [1665] Factory method example - Perl - (2008-06-04) [1819] Calling base class constructors - (2008-10-03) [1949] Nuclear Physics comes to our web site - (2008-12-17) [2427] Operator overloading - redefining addition and other Perl tricks - (2009-09-27) [2651] Calculation within objects - early, last minute, or cached? - (2010-02-26) [2717] The Multiple Inheritance Conundrum, interfaces and mixins - (2010-04-11) [2876] Different perl examples - some corners I rarely explore - (2010-07-18) [2972] Some more advanced Perl examples from a recent course - (2010-09-27) [3097] Making Perl class definitions more conventional and shorter - (2010-12-20) [3098] Learning Object Orientation in Perl through bananas and perhaps Moose - (2010-12-21) [3377] What do I mean when I add things in Perl? - (2011-08-02) [3581] Perl - calls to methods that use => - what do they mean? - (2012-01-16) [3941] Building an object based on another object in Perl - (2012-12-03) [4096] Perl design patterns example - (2013-05-20) [4098] Using object orientation for non-physical objects - (2013-05-22) [4356] Object factories in C++, Python, PHP and Perl - (2014-12-19) [4366] Changing what operators do on objects - a comparison across different programming languages - (2014-12-26)
Some other Articles
switch and case, or given and when in PerlPython - 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! |
4759 posts, page by page
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96 at 50 posts per pageThis is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.
Link to Ezine home page (for reading).
Link to Blogging home page (to add comments).
PH: 01144 1225 708225 • EMAIL: info@wellho.net • WEB: http://www.wellho.net • SKYPE: wellho
PAGE: http://www.wellho.net/mouth/2811_Igl ... o-not.html • PAGE BUILT: Sun Oct 11 16:07:41 2020 • BUILD SYSTEM: JelliaJamb