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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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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))
Luac - getting lua to start fast by precompiling

Luac is Lua's Compiler ... using "luac" you can turn your Lua program into a binary (executable) file. Covered on Installing Lua on our Lua Programming and Learning to program in Lua courses.

usage: luac [options] [filenames].
Available options are:
- process stdin
-l list
-o name output to file 'name' (default is "luac.out")
-p parse only
-s strip debug information
-v show version information
-- stop handling options


The output file isn't actually a binary for the processor you're running on - it's an intermediate bye code format that saves compile time each time you load your Lua program. So Lua still has to be installed on your system (not an issue - it's open source and a very flexible license) and once it's actually running, it's no quicker. Rather like having a car with the engine running ... the get away is quicker, so it's great for short journeys but on a long journey the few cycles saved starting and warming up are lost into insignificance!
(written 2009-10-20)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
U117 - Other Lua Subjects
  [1844] Calling functions in C from your Lua script - a first HowTo - (2008-10-17)
  [1845] Passing a table from Lua into C - (2008-10-18)

U113 - Installing Lua
  [1632] Lua - a powerful, up and coming scripting language - (2008-05-05)
  [4102] Installing Lua 5.2.2 on Mac OS X 10.7.4 - (2013-05-25)


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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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