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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
The OO paradigm applied in Lua
Object Orientation - the Lua way example from a Well House Consultants training course
More on Object Orientation - the Lua way [link]

This example is described in the following article(s):
   • Using Lua tables as objects - [link]

Source code: acobj Module: U107
--[[ The OO paradigm applied in Lua - although Lua is not specifically an OO language, many
of the elements allow it to be used in an Object Oriented Stle - as shown in this short piece
of code ]]


archive = {} -- Classish table "archive"

archive.new = function (index, title)
        local current = {}
        current.index = index -- Data values
        current.title = title
        current.getnum = archive.getnum -- Methods on the object
        current.getnam = archive.getnam
        return current
end

archive.getnum = function(current)
        return current.index
end

archive.getnam = function(current)
        return current.title
end

-- --------- Here is my "test harness" ------------

fh = io.open("ac_20120508","r")
pages = {}
while true do
        line = fh:read()
        if (not line) then break end
        num,nam = string.match(line,"GET /mouth/(%d+)_(.-)%.html")
        if (num) then
                pages[#pages+1] = archive.new(num,nam)
        end
end

for _,access in pairs(pages) do
        print (access:getnum(), access:getnam())
end

--[[ Sample output

munchkin:lm12 grahamellis$ lua acobj
158 MySQL-LEFT-JOIN-and-RIGHT-JOIN-INNER-JOIN-and-OUTER-JOIN
1762 WEB-INF-Tomcat-and-htaccess-httpd-
376
2832 Are-you-learning-Perl-Some-more-examples-for-you-
2832 Are-you-learning-Perl-Some-more-examples-for-you-
3719 Strawberry-Cream-Teas-Well-House-Manor-Melksham-starting-this-weekend
434 Through-public-transport-connection-Chippenham-to-Salisbury-to-cease
3608 Design-Patterns-what-are-they-Why-use-them-
2482 Load-balancing-with-sticky-sessions-httpd-Tomcat-
3717 Returning-extra-results-from-a-function-in-C
[etc]

3260 Ruby-a-training-example-that-puts-many-language-elements-together-to-demonstrate-the-whole
3260 Ruby-a-training-example-that-puts-many-language-elements-together-to-demonstrate-the-whole
912 Recursion-in-Python
1377 Load-Balancing-with-Apache-mod-jk-httpd-Tomcat-
1036 Python-Qt-wX-TkInter-and-Jython-training-
1718 Increasing-Java-Virtual-Machine-memory-for-Tomcat
1660 Korn-shell-some-nuggets
munchkin:lm12 grahamellis$

]]

Learn about this subject
This module and example are covered on the following public courses:
 * Learning to program in Lua
 * Lua Programming
 * Lua Programming
Also available on on site courses for larger groups

Books covering this topic
Yes. We have over 700 books in our library. Books covering Lua are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

Other Examples
This example comes from our "Object Orientation - the Lua way" training module. You'll find a description of the topic and some other closely related examples on the "Object Orientation - the Lua way" module index page.

Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.

Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.

Other resources
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre.
The Horse's mouth provides a daily tip or thought.
• Further resources are available via the resources centre.
• All of these resources can be searched through through our search engine
• And there's a global index here.

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This web site is written and maintained by Well House Consultants.

Purpose of this website
This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.

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Past attendees on our training courses are welcome to use individual examples in the course of their programming, but must check the examples they use to ensure that they are suitable for their job. Remember that some of our examples show you how not to do things - check in your notes. Well House Consultants take no responsibility for the suitability of these example programs to customer's needs.

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