For 2023 - 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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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))
Lua - IAQ (Infrequently Answered Questions)
Here are a handful of "one line" answers from the end of the Lua Course
I was running at the end of last week
• Command line parameters in Lua are available to the program in an indexed table called arg
. (Sample Program
• Functions in Lua can look at the number and type of parameters they're called with, and can behave differently depending on what they find (Sample program
showing a function that can be called with two numbers OR one table as parameters)
• Although Pattern Matching does NOT use regular expressions in Lua, it does use many of the same principles - anchors, literal characters, groups and counts. And it can provide much of the same power but in a far smaller package! (Sample program
showing how a postcode is matched and vital sections extracted)
• You can find out what is in a module by looping through its table keys - because (I'm sure you've not forgotten!) everything is a table in Lua (Sample program
that lists out everything in the OS module)
You'll find many more sample programs, tips and techniques in our Lua Index. If you start with our Introduction to Lua
module page, you'll find some basics. And then down the right hand side of that page, you'll find links to other groups of Lua resources such as Pattern Matching
and Combining Lua and C in the same program
. (written 2008-10-18, updated 2008-11-02)
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articlesU118 - Lua - Resources. 
Training in Lua - (2007-03-16) 
Lua Course - here is the index - (2008-07-03) 
Graphics in Lua - an example using the gd library - (2009-08-02)U112 - Lua - Other Standard Library features. 
Lots of way of converting 3 letter month abbreviations to numbers - (2010-09-10)U108 - Lua - Pattern matching 
Lua examples, Lua Courses - (2008-08-08) 
Lua Regular Expressions - (2009-08-28) 
First and last match with Regular Expressions - (2010-04-02) 
Making a Lua program run more than 10 times faster - (2010-04-16) 
Binary / bitwise operations in Lua with the standard bit32 library - (2012-04-06) 
Changing what operators do on objects - a comparison across different programming languages - (2014-12-26)U106 - Lua - Functions. 
Short circuit evaluation (lazy operator) in Lua - (2008-06-22) 
Sorting in lua - specifying your own sort routine - (2008-07-05) 
If you are learning Lua, here are some more examples - (2008-07-06) 
First class functions in Lua lead to powerful OO facilities - (2008-08-07) 
What are closures in Lua? - (2009-07-31) 
Dot, dot, dot in Lua - variable length parameter lists - (2009-08-11) 
Passing multiple results back from a function - Lua, Python, etc - (2009-08-13) 
Lua examples - coroutines, error handling, objects, etc - (2009-10-15) 
Returning multiple values from a function - Lua - (2010-04-15) 
Lua - variable function arguments and select - (2010-09-08) 
Functions are first class variables in Lua and Python - (2012-04-13)
Some other Articles
Pictures from a delegateDaisy the Cow and a Pint of Ginger BeerString matching in Perl with Regular Expressions30th November - Santa Trip from MelkshamLua - IAQ (Infrequently Answered Questions)Old Piles of the South WestPassing a table from Lua into CCalling functions in C from your Lua script - a first HowToHow many cups of coffee?Lua Course, and the Wiltshire Countryside too
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This is a page archived from The Horse's Mouth at
the diary and writings of Graham Ellis.
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page was written, but things do move forward in our business - new software
releases, price changes, new techniques. Please check back via
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