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Lua module U109
Modules
Exercises, examples and other material relating to training module U109. This topic is presented on public courses Learning to program in Lua, Lua Programming, Lua Programming




Articles and tips on this subjectupdated
4571Lua - using modules to add your own utilities
Lua is a small language ... but that doesn't mean it lacks capabiities - it just means that you need to write some code yourself to implement simple utilities that you would cherry pick from huge libraries in other languages. For example from this week's course, I've written functions to split a line ...
2015-11-05
 
2455Lua examples - coroutines, error handling, objects, etc
I have presented a bespoke Lua course over the last three days ... and it has lead me to some interesting new examples which I'm sharing here. Object Orientation is more a way of thinking and coding than a language feature in Lua - when you set up a piece of data / structure / object, you do so in a ...
2009-10-17
 
2358Encapsulating shared code in a Lua module
Have you ever written code like this? seps = {" "," "," [",'] "','" '," ",' "','" "','"'} Yes, I have ... in fact, that's code that I wrote on Tuesday during the Lua course; it's an indexed table of the separators used to split down a web access log record that's in the apache httpd combined format. Am ...
2009-08-13
 
1699If you are learning Lua, here are some more examples
During some courses, I write few (if any) new examples in front of my delegates, rather relying on the standard ones in the training notes (which I wrote anyway!) and making small changes and adjustments to illustrate how things work. On other courses, though, I write a some new examples from scratch ...
2008-08-05
 
Examples from our training material
Distance.lua   Namespace definition in Lua
MyLib.lua   where do modules / namespaces load from?
MyLib2.lua   where do namespaces load from?
exc   Excercise on loading functions from a file
gdist   get distance between points - uses module
httpcalls.lua   A module to handle web access log records
j2   ... then moving logic out to a module
joinery   Separating out detailed logic into separate functions
logex   Second program to use shared utilities
mymod.lua   First Lua Module
myutils.lua   utility functions for multiple examples
sf5_main   first program to use shared utilities
skills.lua   Sample answer to exercise - an include file
strictcure   How strict.lua can trap globals
useit   Program to use a module
withstrict   How strict.lua can trap globals
Background information
Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from [here].
Topics covered in this module
The require function.
Module directory and environment variables.
Namespaces.
Globals and Strict.
Other Module Functions.
Complete learning
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Ruby, Lua, Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

We have a technical library of over 700 books on the subjects on which we teach. These books are available for reference at our training centre.


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