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1697 - 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 objects to be sorted. If you want to override this behaviour, you can pass the name of a function into Lua's sort and it will call this function eac ....

1696 - Saying NOT in Perl, PHP, Python, Lua ...
"Isn't there one standard way to say NOT?" asked one of my delegates on today's course - and it's an excellent question. But the answer to a question about a negative subject is itself in the negative - no, there isn't just a single way! In fact .. I can think of no fewer that 12 ways! • 1. ! ....

1695 - Lua Course - here is the index
If you want to look something up in a book, you'll probably use the index. And so it is in Lua that if you want to look something up in a table (the collection structure in Lua), you'll use an index too. We have just announced our Public Lua Course - it's a natural for us, as we specialise in nich ....

1694 - Defensive coding techniques in PHP?
I used to write CAD system software (many moons ago), and when doing so I used what I call "defensive coding techniques". Which meant that I never trusted user input, that a file would be available, that I could write correctly to a device - I tested, tested and tested again. In our environment, i ....

1693 - July to December 2008 - Open Source training schedule
Highlights - a new Lua class, a new PHP Techniques course to help you make the very best of your PHP base web site, and additional Perl and Tcl courses added in to meet customer demand. • All these public courses run at our Melksham, Wiltshire training centre • No minimum number of delega ....

1692 - Towards Object Oriented Programming in Lua
I've spent a lot of the weekend working on our Lua course ... and for those of you new to this language I'll be sharing a few snippets with you here on "The Horse's Mouth" over coming weeks. Today, I've got a short section which starts to introduce how you can do OO programming in Lua. The section ....

1691 - Co-routines in Lua - co-operative processing
CoRoutines in Lua allow you to have a number of pieces of co-operative code which (whilst they’re not running in parallel in a true multithreaded way) allow you to progress through multiple strands of your code at the sametime. Let’s take an example. I have a rather large text file that lists ....

1690 - Conversion of c/r line ends to l/f line ends
Situation - Excel saved file that I want to read into a Lua program I'm writing on Linux. End of line characters on the Excel file are [cr], and Linux used [lf]. Quick solution - sed sed 's/\x0d/\x0a/g' stationusage.txt > st2.txt Literally "substitute globally every hex 0D with a hex 0A" ....

1689 - Some sideways thoughts on the news
"Women to be more equal than men" said the headline on the newspaper sitting on the desk where I was working yesterday - and it struck me that we're more and more in George Orwell's world of Animal Farm and 1984, with some crazy doublespeak and perhaps the thought police out to ensure that everythin ....

1688 - cannot restore segment prot after reloc message - PHP / httpd
Here's a message that we got yesterday when building some of the machines on our Lamp deployment course [root@easterton apache2]# ./bin/apachectl start Syntax error on line 233 of /usr/local/apache2/conf/httpd.conf: Cannot load /usr/local/apache2/modules/libphp5.so into server: /usr/local/apache2/m ....

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This page is from the web site of Well House Consultants who provide Open Source computer training. Program written / developed as a demonstration during a PHP course. The example is in module H113

Training sample © 2014, WELL HOUSE CONSULTANTS LTD
This is http://www.wellho.net/demo/mqclim.php
See source code here • More examples - same topic here
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