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Training, Open Source Programming Languages |
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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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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)) |
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Lua - 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 and to read a file into a table of tables - it's [here]. Those functions can be loaded using a require and called up from multiple application programs - see [here] and [here]. Since Lua is a "default global" language, please note the declaration of internal variables to local within each function. Although we're already in November, due to popular demand the current Lua course will be followed by yet another in the week of 14th December ...or if you're coming back to this article on the archive, see [here] for our current schedule. N.B. original unsplit code is [here] (written 2015-11-04, updated 2015-11-05) Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles U105 - Lua - Tables and the table library.[1697] Sorting in lua - specifying your own sort routine - (2008-07-05) [1742] Lua - Table elements v table as a whole - (2008-08-07) [2346] The indexed and hashed parts of a Lua table - (2009-08-10) [2499] ourdog is Greyhound, Staffie and Ginger Cake - (2009-11-09) [2699] Lua tables - they are everything - (2010-03-30) [2703] Lua Metatables - (2010-04-02) [3694] Special __ methods you can use in Lua metatables - (2012-04-12) [3725] Lua Tables - (2012-05-10) [4248] Metatables, Metamethods, classes and objects in Lua - (2014-03-18) [4273] Dot or Colon separator between table name and member in Lua - what is the difference? - (2014-05-06) U109 - Lua - Modules [1699] If you are learning Lua, here are some more examples - (2008-07-06) [2358] Encapsulating shared code in a Lua module - (2009-08-13) [2455] Lua examples - coroutines, error handling, objects, etc - (2009-10-15)
Some other Articles
Learning not just what a program does, but how to design it in the first place.repeat until in Lua - a one or more rather than a zero or more loop Classic style OO code - in Lua Tables with values and code in Lua - looks like an object? Lua - using modules to add your own utilities A warm welcome awaits you at Well House Manor, Melksham Lua - changes to how integers and floats are handled - 5.2 to 5.3 Moderation - and the tendency to over-moderate Japanese and Malaysian food in Melksham C - why is slow to write and debug) but fast to run? |
4759 posts, page by page
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96 at 50 posts per pageThis 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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