Lua - Functions.

Lua module U106

Functions.

Exercises, examples and other material relating to training module U106. This topic is presented on public courses Learning to program in Lua, Lua Programming

Lua Programming - training course - Learning to program in Lua and make good use of the language

Lua Programming - Learning to program in Lua and make good use of the language Our public "Lua Programming" course takes you from the basics of the language ...

http://www.wellho.net/course/ubfull.html [course]

Learning to program in Lua - training course - Learning to program in Lua and make good use of the language

Learning to program in Lua - Learning to program in Lua and make good use of the language "Learning to program in Lua" takes you from the basics of computer ...

http://www.wellho.net/course/ulfull.html [course]

Lua examples, Lua Courses

Programming training is much more effective if the delegates are shown how a particular program is written, rather than just the final result ... show ...

http://www.wellho.net/mouth/1744_Lua ... urses.html [short article]

Lua 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 ...

http://www.wellho.net/mouth/2455_Lua ... s-etc.html [short article]

If 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 ...

http://www.wellho.net/mouth/1699_If- ... mples.html [short article]

Sorting in lua - specifying your own sort routine

In Lua, the table.sort function allows you to sort a table and by default is sorts into the order that's given back by the < operator on each of the ...

http://www.wellho.net/mouth/1697_Sor ... utine.html [short article]

What are closures in Lua?

When you're writing a sort routine, passing in "a" and "b" to be compared, how do you access other data that's needed in association with a and b? If ...

http://www.wellho.net/mouth/2312_Wha ... -Lua-.html [short article]

This topic is presented on public courses Learning to program in Lua, Lua Programming

Examples from our training material

brvret	break v return
cl2d	First Closure demonstration
dress1	The problem of default global
dress2	declaring variables local to avoid global issues
dress3	Code loads at run time not compile time
ex106	excersize - functions
exrate	exchange rate example as a function
fav	Using tables and functions within them
fcv	Dynamic code loading
fsr	Flexible Function Calls
funone	Function calling and definition in Lua
funtwo	global, local and call by value
isd	An adaptive function in Lua
lazy	lazy operators / short circuit evaluation
loadthese.lua	functions to include within a test harness
lomore	variables local to a block
mj	A function to take a lot of parameters or a table
owsort	how sorting via callbacks works
rmv	returning multiple values
size.lua	sample module - exercise answer
summer	variable arguments - a function to add up numbers
symet	Symetric Functions
tabasnamed	function call via table
testharness	Loading functions from a file
vargs	Variable number of arguments

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 http://www.training-notes.co.uk.

Topics covered in this module

Defining and calling functions.
Variable scope.
Return values.
Chunks as functions.
Upvalues and Closures.
Variable Argument Lists.
Nesting and passing functions and recursion.

Complete learning

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