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20.9.2014 - We have just updated our course layouts and descriptions and added our 2015 schedule.

Object Orientation in Ruby - intermediate examples

It's when you teach object orientation - the fully Monty, including inheritance, static and dynamic methods and variables, and so on - to a complete novice to programming and that person finds it's one of the easiest parts of the course that you realise:

a) Just how many bad ole habits us ancient structure programmers have gotten ourselves into and ...

b) What an excellent and natural Object system languages like Ruby have. T hat's as compared to C++ with a bevy of files, Java with so much security it obscures the simplicity, or Perl with so many options and so much ability to sidestep objects. (Python has a similar, and great, philosophy too)

Here are the 'second level' examples from today - not the basic object stuff, which you'll find if you look back a couple of days.

[link] Single class example for extension by inheritance

[link] Object and Class variables (dynamic and static)

[link] Static Method in Ruby

[link] Inheritance in Ruby
(written 2009-07-16, updated 2009-07-17)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
R105 - Ruby - Classes and Objects
  [4009] Clear, concise examples - Ruby classes and objects. - (2013-02-17)
  [3421] Ruby off the Rails? - (2011-09-06)
  [2651] Calculation within objects - early, last minute, or cached? - (2010-02-26)
  [2616] Defining a static method - Java, Python and Ruby - (2010-02-01)
  [2609] Scope of variables - important to Ruby on Rails - (2010-01-31)
  [2603] Ruby objects - a primer - (2010-01-29)
  [1925] Introduction to Object Oriented Programming - (2008-12-06)
  [983] Blessing in Perl / Member variable in Ruby - (2006-12-14)

R108 - Ruby - More Classes and Objects
  [3782] Standard methods available on all objects in Ruby - (2012-06-23)
  [3781] Private, Protected, Public in Ruby. What about interfaces and abstract classes in Ruby? - (2012-06-23)
  [3760] Why you should use objects even for short data manipulation programs in Ruby - (2012-06-10)
  [3260] Ruby - a training example that puts many language elements together to demonstrate the whole - (2011-04-23)
  [3158] Ruby training - some fresh examples for string handling applications - (2011-02-05)
  [3154] Changing a class later on - Ruby - (2011-02-02)
  [3142] Private and Public - and things between - (2011-01-22)
  [2980] Ruby - examples of regular expressions, inheritance and polymorphism - (2010-10-02)
  [2977] What is a factory method and why use one? - Example in Ruby - (2010-09-30)
  [2717] The Multiple Inheritance Conundrum, interfaces and mixins - (2010-04-11)
  [2623] Object Oriented Ruby - new examples - (2010-02-03)
  [2620] Direct access to object variable (attributes) in Ruby - (2010-02-02)
  [2604] Tips for writing a test program (Ruby / Python / Java) - (2010-01-29)
  [2601] Ruby - is_a? v instance_of? - what is the difference? - (2010-01-27)
  [1587] Some Ruby programming examples from our course - (2008-03-21)
  [1217] What are factory and singleton classes? - (2007-06-04)
  [656] Think about your design even if you don't use full UML - (2006-03-24)
  [184] MTBF of coffee machines - (2005-01-20)


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Some other Articles
Variable scope - what is it, and how does it Ruby?
The dog is not in trouble
Can you learn to program in 4 days?
Regular Expressions in Ruby
Object Orientation in Ruby - intermediate examples
Collection objects (array and hash) in Ruby
Opening and reading files - the ruby fundamentals
pre-Inaugural briefing - Melksham Community Area Partnership
Wiltshire Community Area Partnerships
Learning to program in Ruby - examples of the programming basics
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This 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.

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