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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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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))
The HTML++ Metalanguage

What's the difference between a language and a metalanguage?

A language is a single specification - a way of describing a series of actions or how some particular data is handled. Whereas a metalanguage is a way of specifying a series of languages to a particular pattern.

An example? HTML is a language. There are different flavours (slightly) but basically it's a single language. What I descibe as HTML++ is a metalanguage - a way of adding to HTML to make it rather more that just HTML. Examples of HTML++ metalanguages include JSP, PHP, ASP, Rails, Eruby, EmbPerl, SSI; all differently languages as you need different compilers / interpretters to handle them, but all extending basic HTML in a similar way.

In the same way, XML is a metalanguage, and implementetations of it include XSLT, RSS, and many more from SOAP to Tomcat configuration files.

Update - January 2010 - we have added an optional Ruby on Rails day to our Ruby courses because it is becoming so popular - see [here]
(written 2007-01-22, updated 2010-01-31)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
R202 - Ruby on Rails
  [1302] Ruby, Ruby, Ruby. Rails, Rails, Rails. - (2007-08-13)
  [1375] Python v Ruby - (2007-10-02)
  [1745] Moodle, Drupal, Django (and Rails) - (2008-08-08)
  [2605] Ruby on Rails - a sample application to teach you how - (2010-01-30)
  [2607] Answers on Ruby on Rails - (2010-01-30)
  [2609] Scope of variables - important to Ruby on Rails - (2010-01-31)
  [3624] Why do we need a Model, View, Controller architecture? - (2012-02-25)
  [3756] Ruby on Rails - how it flows, and where the files go - (2012-06-08)
  [3772] Hello World - Ruby on Rails - a checklist of each step - (2012-06-22)
  [3777] Multiple views in a single appication - sharing common parts of the template - Ruby on Rails - (2012-06-23)
  [3778] Providing a form to allow the user to add data to the model - Ruby on Rails - (2012-06-23)
  [3779] Adding validation to form entries and sticky fields - Ruby on Rails - (2012-06-23)
  [3780] Ruby of Rails - cleanly displaying model data in the view - (2012-06-23)
  [3919] What is a web framework? - (2012-11-10)
  [4010] Really Simple Rails - (2013-02-17)
  [4013] Web Frameworks - nested templates - (2013-02-22)

J907 - JSP - JavaServer Pages
  [79] Last day of Java - (2004-10-08)
  [1550] Java (JSP and Servlet examples) live on our server - (2008-02-23)
  [2147] A very easy JSP (Java Server Page) - (2009-05-01)
  [2151] What is a JSP tag library? - (2009-05-01)
  [2183] Servlet life cycle, and Java Servlet variable scope - (2009-05-16)
  [2525] Using JSPs, Tag Libraries, Java Beans, Tomcat in one short example - (2009-12-04)
  [3046] Java Beans, tag libraries and JSPs - what and why. - (2010-11-13)
  [3997] Servlet v JSP (Java Server Page). What is the difference? - (2013-02-06)

H101 - Introduction to PHP
  [48] PHP - onwards and upwards - (2004-09-14)
  [55] Evening classes to learn PHP - (2004-09-19)
  [93] Case Sensitive? - (2004-10-19)
  [124] PHP v Java - (2004-11-20)
  [132] Portrait of the author - (2004-11-27)
  [135] Too many Perls - (2004-11-30)
  [317] Programming languages - a comparison - (2005-05-20)
  [341] Happy Birthday, PHP - (2005-06-09)
  [380] Bridging to the customer requirement - (2005-07-16)
  [382] Central London Courses - Perl, PHP, Python, Tcl, MySQL - (2005-07-18)
  [433] FTP - how to make the right transfers - (2005-09-01)
  [577] Learning to program in Perl or PHP - (2006-01-26)
  [624] It's REALLY easy to add a little PHP - (2006-02-26)
  [629] Choosing the right language - (2006-03-01)
  [646] PHP - London course, Melksham Course, Evening course - (2006-03-14)
  [691] Testing you Perl / PHP / MySQL / Tcl knowledge - (2006-04-19)
  [712] Why reinvent the wheel - (2006-05-06)
  [789] Hot answers in PHP - (2006-07-02)
  [795] Remember a site's non-technical issues too - (2006-07-07)
  [846] Is Perl being replaced by PHP and Python? - (2006-08-27)
  [917] Syntax checking in PHP - (2006-11-07)
  [924] The LAMP Cookbook - Linux, Apache, MySQL, PHP / Perl - (2006-11-13)
  [949] Sludge off the mountain, and Python and PHP - (2006-11-27)
  [1198] From Web to Web 2 - (2007-05-21)
  [1717] Q - Should I use Perl or Python? - (2008-07-23)
  [1753] Perl v PHP, choosing the right language - (2008-08-14)
  [1958] PHP - Parse error: syntax error, unexpected $end ... - (2008-12-23)
  [2097] PHP Course - for hobby / club / charity users. - (2009-03-22)
  [3025] Learning to Program ... in PHP. Course examples. - (2010-11-01)
  [4118] We not only teach PHP and Python - we teach good PHP and Python Practice! - (2013-06-18)
  [4621] The power of scripting - (2016-01-12)

A301 - Web Application Deployment - XML, DTD, XSLT, XHTML and More
  [653] Easy feed! - (2006-03-21)
  [1901] XML, HTML, XHTML and more - (2008-11-23)
  [2246] What difference does using the XHTML standard really make? - (2009-06-18)
  [2378] Handling XML in Perl - introduction and early examples - (2009-08-27)
  [2554] Adding retrospective ALT attributes to IMG - (2009-12-28)


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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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