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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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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))
Clear, concise examples - Ruby classes and objects.

Finding clear, concise examples of how to perform a simple programming task can be surprisingly difficult. "I just want a [Rails] model that doesn't actually use a database table" was an example yesterday. Such shouldn't be difficult, but authors tend to write a simple example and then decide "While I'm at it, I could show X as well" and "I should include Y because it's a good alternative" and "I could be critisized for not covering Z so I'll cover it" ... and the result is an example which doesn't actually fulfill the original requirement of being clear and concise.

I fall into the same trap sometimes ...

On Thursday, I wrote an example to show how a class is defined, how an object is created within that class, and how the object is accessed. Good. And I then extended the example to show:
• how the class can be loaded from a separate file
• how we can use an array of objects
• how we can use a factory method to manufacture objects of a given type
• how we can include class variables and methods as well as object variables
• how we can extend the class to create other similar classes without repeating code

Fortunately, I saved a copy of my original (straightforward) example so that I can re-use it as a first "This is how I create and use an object in Ruby" example - it's [here].

The extended copy (if you would like a comparison, and to move on to all the exciting stuff) is [here], with the class code broken out into a separate file [here].

Examples like this from our ... Ruby Courses.
(written 2013-02-17)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
R105 - Ruby - Classes and Objects
  [983] Blessing in Perl / Member variable in Ruby - (2006-12-14)
  [1925] Introduction to Object Oriented Programming - (2008-12-06)
  [2292] Object Orientation in Ruby - intermediate examples - (2009-07-16)
  [2603] Ruby objects - a primer - (2010-01-29)
  [2609] Scope of variables - important to Ruby on Rails - (2010-01-31)
  [2616] Defining a static method - Java, Python and Ruby - (2010-02-01)
  [2651] Calculation within objects - early, last minute, or cached? - (2010-02-26)
  [3421] Ruby off the Rails? - (2011-09-06)
  [4502] Reading and parsing a JSON object in Ruby - (2015-06-01)

R102 - Hello Ruby Objects
  [2287] Learning to program in Ruby - examples of the programming basics - (2009-07-15)
  [4369] Ruby - the second rung of learning the language - (2014-12-28)
  [4580] Easy example - data record to object and object to data record mapping in Ruby - (2015-11-21)
  [4581] Thin application, thick objects - keep you main code simple. Example in Ruby - (2015-11-21)
  [4673] Separating detailed data code from the main application - Ruby example - (2016-05-16)

G504 - Well House Consultants - Writing Notes
  [4] Seeing the wood for the trees. - (2004-08-06)
  [7] Writing on a Sunday - (2004-08-08)
  [9] Study room - the Oxford train - (2004-08-10)
  [394] A year on - should we offer certified PHP courses - (2005-07-28)
  [398] Training course material - why we write our own - (2005-07-30)
  [407] Theft of training material - (2005-08-09)
  [797] Writing up new C / C++ notes. - (2006-07-09)
  [979] Empty seats, Nodding Donkeys and buses - (2006-12-11)
  [982] Notes from the white board - (2006-12-14)
  [1950] Copyright of Training Notes and Web Site - (2008-12-18)
  [2010] How long should a training module be? - (2009-01-27)
  [2192] Copy writing - allowing for the cut - (2009-05-21)
  [2414] Hello World - a good traditional start to a Java course - (2009-09-22)
  [2481] Sample code with errors in it on our web site - (2009-10-29)
  [2812] What is Perl? - (2010-06-15)
  [2828] Sharing our programs - easy. Sharing our data - harder. - (2010-06-26)
  [3152] Jargon busting - (2011-01-30)
  [4031] Showing what programming errors look like - web site pitfall - (2013-03-06)


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Really Simple Rails
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Web Frameworks - nested templates
A course is not just for a year - its for a career
From Salford
Really Simple Rails
Clear, concise examples - Ruby classes and objects.
Reading and checking user inputs - first lessons - Ruby
Which database should I use? MySQL v SQLite
Ruby / SQLite3 example program, showing JOIN v LEFT JOIN
New guest ... becoming returning guest
Annual Accounts - a big job for a small business
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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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