Horse's Mouth
Sun Apr 24 04:47:46 EDT 2011
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Some SVG Elements, pixel and percent positioning - SVG Elements can be specified in terms of absolute co-ordinates of fixed pixel positions - and these two images which are generated from the same SVG file illustrate how that difference can be used to generate an image which varies...

Scalable Vector Graphics - easy, low bandwidth, high resolution, dynamic. - I have long wished that I could specify vector graphics in a browser ... and at long last I can say "most modern browsers support SVG" - as it's supported in IE9, as well as the other common browsers. Well...

Ruby - a training example that puts many language elements together to demonstrate the whole - Towards the end of our programming language training courses, we pull together all the various strands into a worked example that shows how they go together. I've just posted such an example from last week's Ruby Programming Course ... [here]....

Our library in Melksham - There's some 700 technical books in the Well House Consultants library in Melksham, and several hundred other books too on the shelves at Well House Manor, making for a comfortable and relaxing room where the geekier of our guests can...

Morning in Melksham - This morning, I walked around Melksham's town centre really early, popping reminders about next Tuesday morning though the letterboxes on the various business doors. I love these walks around - it gives me a chance to look, to observe, and to...

All possible combinations from a list (Python) or array (Ruby) - If there are eight of us at a meeting, how many possibilities are there for a pair of people to stongly disagree? The answer turns out to be 28. And if you look at subgoups of 3, looking for everyone...

Displaying a directory or file system tree - Linux - How can you display your whole file tree on a Linux system? With the tree command! |-- abo |-- access_log |-- adarrivals.txt |-- adhoc_private |   |-- adhoc.conf |   |-- businesslogic.inc |   |-- page_layout.htp |   |-- sampledata.sql |   |-- sqlwrapper.inc |   `-- webhelpers.inc |-- backups |   |-- emma |   |-- net.cgi.tgz |   |-- net.html.tgz |   |-- net.other.tgz |   |-- nettouk.sql |   |-- nettouk.sql.gz |   `-- nfr |       |-- accesslog_nfr.co.uk_4_24_2010 |       |-- perly |       `-- snapshot |-- batch |   |-- ilog.php |   |-- perl_web_anal...

Process every member of an array, and sort an array - Ruby - If you're wanting to process every member of an array, you've a choice ... you can write a loop to step through the key of each member, you can write a loop to step through each member itself, or you...

Multiple inputs, multiple out, ruby functions - Has it ever struck you as curious that in many languages, you can pass as many parameters into a function as you like, but you can only return one? Well - that's many language not all - in Ruby you...

Is this number between? Does this list include? - Ruby - There's often a requirement in a program to see if one value is between two others, and in most languages you'll write that as as double condition:   if (n >= 5 && n <= 8) printf("Yesssss!\n"); in C or C++,...

C++ - unknown array size, unknown object type. Help! - There are time when you're writing a program where you say "I don't know". • I don't know how many records / object I'm going to read from a data file into an array - so I can't set the...

C++ - objects that are based on other objects, saving coding and adding robustness - In a previous article ([here]), I talked about how we introduce the basic concepts of classes, methods and objects on our C++ courses. I'm now going to give you some links to the next series of example which I wrote...

C++ - how we teach the language and the concepts behind the language - When I'm teaching an object oriented language such as C++, I like to write code and demonstrate from scratch to my class, getting them to 'feed' me with application data and information so that I can show them how programs...

Events - Spring and Early Summer 2011 in Melksham - 26th April - "Melksham - the way forward?" - sponsored by the Melksham Chamber of Commerce - [link] 12th May - Area Board (younger people's meeting) - [link] 21st May - Komix opens - [link] 23rd May - ASDA's opening...

What have these pictures in common? - Here are ten photos. They have something in common; have a look through them and see if you can work out what it is. Each of them has a link so that you can enlarge it, in a new window,...