The Well House Newsletter - Thursday, 25th April 2024
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Previous editions: March 2024January 2024November 2023September 2023July 2023May 2023March 2023January 2023November 2022 • this is the current edition

Public Transport Training from Well House Consultants And also ... Tcl, Tcl/Tk and Expect Programming in Lua Python Programming Well House Manor - Hotel and Training Centre Apache HTTP and Tomcat Servers The Perl Programming Language and its use Ruby and Ruby on Rails PHP - the language and its application C and C++ Programming Linux and Shell Programming Melksham SQL and MySQL For the Webmaster, Postmaster and moderator Java and the Java Environment Fun and Flames Running a training and hotel company Around, about and nearby to Wiltshire Client Side Languages (HTML, CSS, Javascript) Keynote Articles General Programming Topics
Keynote article ...

Regression testing - via a very short C testing framework

Code testing is important. Separation of code into separate, managable sections is important. Retesting of code running all the old tests is important when the code sections are enhanced / debugged.

At the end of this week's C course, we wrote a whole series of pieces of logic relating to web server log files - loading data into dynamic (realloc'd arrays of structs, and then extracting data from those structures. And we wrote an initial main routine to run and test from the command line. For initial development, that's great but ...
... the main couldn't remain as we started to build with the logic
... lots of sections / routine groups need testing.

Solution?
• Rename main to a different name such as test_access and leave it in the original file
• build a tiny test harness that runs each set of tests and correlates the results
• have the test harness send standard output (stdout) within the tests to a file

Result?
A rudemintary regression testing system, where each time you add a new set of routines or change something, you can rerun all the tests and get an automated set of replies.

The results of running the test suite look a bit boring:

  WomanWithCat:cj16 grahamellis$ ./framework
  
  .F..
  Failed 1 test(s) out of 4, passed 3
  
  WomanWithCat:cj16 grahamellis$


Commented framework source is [here] and tests and routines to be tested [here] and [here].
(this article written on 2016-01-29)

Other articles ...

Linux and Shell Programming
[4587] shell - bash. Writing conditional tests and statements - the options available
[4586] Extending your bash shell with aliases, functions and extra commands
[4585] What is make? What is gcc?
[4584] Bash ... some new scripts to - handling user input
[4487] Starting MySQL. ERROR! The server quit without updating PID file - how we fixed it.
Top or Show all for Linux and Shell Programming

Apache HTTP and Tomcat Servers
[4708] Scons - a build system in Python - building hello world
[4491] Web Server Admin - some of those things that happen, and solutions
[4434] Public training courses - upcoming dates
[4432] Java web application for teaching - now with sessions and clustering / load balancing demonstrations
[4431] A Java servlet that is also a stand alone program. And a server that is also a web client.
Top or Show all for Apache HTTP and Tomcat Servers

C and C++ Programming
[4635] Encapsulating logic in functions and structs - the C approach to Object Oriented techniques
[4633] String handling in C - new examples of extracting integers from a string
[4566] C - why is slow to write and debug) but fast to run?
[4565] Allocation of memory for objects in C++ - Stack v Heap
[4563] Formatting and outputting your own classes in C++
Top or Show all for C and C++ Programming

Melksham
[4738] Melksham Chamber of Commerce - my final Presidents report
[4706] Melksham trial train service is to be made permanent
[4704] Three months in community rail pictures
[4703] What do people use the bus for in Wiltshire - survey interim results.
[4701] Pretty at the station too
Top or Show all for Melksham

Training from Well House Consultants
[4769] Python, Tcl, Lua and other Open Source programming courses for 2018
[4751] Final day of training at Well House Manor - Python, Lua, Tcl and C/C++ continue at The Spa, Melksham
[4705] Course dates - from October 2016 to December 2017
[4689] Training Course schedule for summer and autumn 2016
[4671] Ruby training, half a world away
Top or Show all for Training from Well House Consultants

Running a training and hotel company
[4613] Our best hotel customers help us ... to help them ... be our best customers.
[4603] Happy New Year. Our customers are our ambassadors
[4543] Saturday morning at Well House Manor
[4521] Should we get an AA or Visit Wiltshire hotel assessment?
[4468] Four in a Bed - most popular answers
Top or Show all for Running a training and hotel company

Well House Manor - Hotel and Training Centre
[4715] Well House Manor - Still five out of five!
[4644] In your room at Well House Manor, Melksham, Wiltshire
[4582] A near-empty plate of pastries - sign of a breakfast enjoyed
[4567] Japanese and Malaysian food in Melksham
[4379] Well House Consultants / Well House Manor - Prices for 2015
Top or Show all for Well House Manor - Hotel and Training Centre

For the Webmaster, Postmaster and moderator
[4651] Pressure selling in the fire safety business
[4520] No cold sales calls please - but delighted to hear from others!
[4492] Almost so wrong, but perhaps it's right for some?
[4474] Effect on external factors on traffic to our web sites - an update
[4426] FileMaker Day to Unix Time conversion
Top or Show all for For the Webmaster, Postmaster and moderator

General Programming Topics
[4763] Regex Reference sheet
[4707] Some gems from an introduction to Python
[4673] Separating detailed data code from the main application - Ruby example
[4663] Easy data to object mapping (csv and Python)
[4656] Identifying the first and last records in a sequence
Top or Show all for General Programming Topics

PHP - the language and its application
[4655] Image indexer / thumbnail display scripts in PHP
[4642] A small teaching program - demonstration of principles only
[4627] Caching results in an object for efficiency - avoiding re-calculation
[4626] Singleton design pattern - examples and uses
[4483] Moving from mysql to mysqli - simple worked example
Top or Show all for PHP - the language and its application

Java and the Java Environment
[4428] Using the lead - passing arrays and other collections in Java
[4427] Java example - for loop and conditionals from course exercise
[4422] Objects - from physical to virtual or abstract - Java
[4420] Flexibility in input - read from file, web resource or keyboard
[4419] Java Inheritance example - group of classes - step by step
[4414] Java - converting an integer to a fixed length string
[4413] Binomial Coefficient (Pascal Triangle) objects in Java
[4393] Splitting Java strings and extracting numbers
[4350] Keyboard reader for Java programming newcomers
[4347] Arrays in Java - an introduction for newcomers
[4345] Incrementing a variable in Java - Pre and Post Increment
[4334] Splitting out code into name blocks for clarity and reusability
[4332] First Java Application - calculating the weight of a tablecloth
[4326] Learning to program - comments, documentation and test code
[4324] Learning to program - variables and constants
[4323] Learning to program - Loop statements such as while
[4322] Learning to Program - the conditional statement (if)
[3997] Servlet v JSP (Java Server Page). What is the difference?
[3573] New in Java 7 - and why we are not running public Java 7 courses
[3497] Not the same language - but based on the same constructs
[3365] Turning bright delegates into bright and knowledgable ones
[3293] Distributing the server load - yet ensuring that each user return to the same system (Apache httpd and Tomcat)
[3048] String handling - from first steps to practical examples
[3047] What is a universal superclass? Java / Perl / Python / Other OO languages
[3046] Java Beans, tag libraries and JSPs - what and why.
[3045] After Course Resources - do we publish sample answers. Example from Java Exceptions module.
[3044] Changing a Servlet - more that just editing and compiling
[3043] Gathering information - logging - with log4j. First steps.
[3041] Java - basic rules for arithmetic, variables and conversion
[3040] Doing several things at the same time - Java threads
[3039] Fresh Paint - Java Arrays
[3038] Setting up individual variables, and arrays, in Java - some commented examples
[2863] Writing a server in Java
[2862] Fail Safe Error Handling in Java via Exceptions
[2860] What methods are available on this Java object?
[2859] Using java, javac, jar, and CLASSPATH - a simple example
[2735] Type checking, Java arrays and collections
[2734] for and foreach in Java
[2654] Java - from applets to servlets. JSPs and more
[2653] Java Server Pages - putting it all together
[2652] Reading and writing cookies in Java Servlets and JSPs
[2649] Length, size or capacity in Java?
[2648] Java arrays - are they true arrays or not?
[2642] What does a web application look like under Tomcat?
[2525] Using JSPs, Tag Libraries, Java Beans, Tomcat in one short example
[2434] Abstract classes, Interfaces, PHP and Java
[2423] What is a JVM, a JRE, a JDK - components of the core Java Environment
[2422] Looking inside Java classes - javap and javadoc
[2421] Sorting Collections of Objects in Java
[2420] Exceptions in Java - why and how
[2419] Where is my Java class?
[2418] Viv.java uses unchecked or unsafe operations - explanation and cure
[2417] Java Programming Fundamentals
[2414] Hello World - a good traditional start to a Java course
[2323] Java Collection Objects in the java.util package
[2218] Multiple web applications under Tomcat - what are the options?
[2212] Dripping taps, Java threads and the single thread model
[2185] Abstract Classes - Java
[2183] Servlet life cycle, and Java Servlet variable scope
[2155] No subject or title?
[2154] Bean Classes in Java and Java Database Connections
[2153] Class Loading and Variable Conversion in Java
[2151] What is a JSP tag library?
[2148] Variable scope in Java Servlets and other web applications
[2147] A very easy JSP (Java Server Page)
[2115] Finding your java program - the CLASSPATH variable
[2114] Which Version of Java am I running?
[2091] C, C++ and C# ... Java and JavaScript
[2087] Comparing Java Courses - what can we do?
[2058] Invoker and cgi servlets on Tomcat 6
[2036] Java Tag Libraries / how they work / Tomcat Deployment
[1910] Java - Generics
[1909] javax.servlet cannot be resolved - how to solve
[1908] Java CLASSPATH explained
[1906] Long, Longer, Longest in Java
[1562] Java Compiler - needs all classes, compiles them all too
[1557] Trying out our Java examples on our web site
[1556] Java - a demonstration of inheritance on just one page
[1550] Java (JSP and Servlet examples) live on our server
[1502] Java, sorting, ArrayList example, generics
[1501] Java - using super to call a method in the parent class
[1500] First Class Java. First step and moving forward.
[1498] Java is a dynamic language .... (and comparison)
[1497] Training Season Starts again!
[1495] Single login and single threaded models - Java and PHP
[1466] Effective Java training - the bootcamp approach
[1446] An answer to a student asking 'Help'
[1418] A Golf Club Decision - Perl to Java
[1326] GUI design - Sketch it out first! (Java / Swing example)
[1325] Java - Client side applet applications as well as server side
[1296] An example of Java Inheritance from scratch
[1239] End of File on a Java BufferedReader
[1158] Private Java Course - A customer's pictures
[1082] Straight from the .jar
[1074] Java beans and classes, .war and .jar files
[1067] Serialization in Java - all layers required!
[1066] Final, Finally and Finalize - three special words in Java
[1062] Java sorting - comparable v comparator
[1049] Java 6, Apache Tomcat 6.
[874] Who can use which access door?
[871] Java oversold?
[792] Is Java the right language to learn?
[754] tar, jar, war, ear, sar files
[694] Ant and Make
[479] New servlet from old
[127] Conversion and coercion in Java
[124] PHP v Java
[111] Training notes available under Open Distribution license
[79] Last day of Java
[42] Do languages change?
[1294] An example of Java Inheritance from scratch
Top or Show all for Java and the Java Environment

Around, about and nearby to Wiltshire
[4702] Up and down TransWilts - some pictures off the rails!
[4653] Coats of arms - towns and authorities in Wiltshire
[4622] Frosty morning, beauty of Wiltshire
[4265] A lovely meal in Swindon - just a short walk from the station
[4233] Open for the new year - Imber
Top or Show all for Around, about and nearby to Wiltshire

The Perl Programming Language and its use
[4700] Obfurscated code - it might work, but is it maintainable?
[4620] Perl 6 - a Practical Extraction and Reporting example!
[4611] Hungarian, Camel, Snake and Kebab - variable naming conventions
[4610] Sorting by key or by comparator - Perl 6
[4609] Mapping an array / list without a loop - how to do it in Perl 6
Top or Show all for The Perl Programming Language and its use

Client Side Languages (HTML, CSS, Javascript)
[4037] Cascading Style Sheets and formatting your web page
[4036] HTML tags uses in these blog articles
[4035] Special characters in HTML
[4034] The VERY basics of a web page ... and web site
[3532] Sharing the user experience - designing a form with the customer in mind
Top or Show all for Client Side Languages (HTML, CSS, Javascript)

Ruby and Ruby on Rails
[4682] One line scripts - Awk, Perl and Ruby
[4681] Ruby testing with RSpec - a new example
[4680] Processing data line by line - iterator in Ruby with yield
[4679] Reading in XML in Ruby with xmlsimple
[4676] Running shell (operating system) commands from within Ruby
Top or Show all for Ruby and Ruby on Rails

SQL and MySQL
[4493] Forgotten / lost MySQL root password
[4481] Extracting data from backups to restore selected rows from MySQL tables
[4436] Accessing a MySQL database from Python with mysql.connector
[4406] Fixing damaged MySQL tables - Error 1712 and Error 2013
[4390] Checking MySQL database backups have worked (not failed)
Top or Show all for SQL and MySQL

Tcl, Tcl/Tk and Expect
[4762] Coverage map in Tcl - how many times has each proc been called?
[4678] Expect with Ruby - a training example to get you started
[4616] Still teaching Tcl in 2016?
[4525] What does Tcl do if you try to run a command that is not defined?
[4524] Tcl - a new example for data reformatting
Top or Show all for Tcl, Tcl/Tk and Expect

Programming in Lua
[4753] Lua, Tcl, Python, C and C++ courses - at our Melksham HQ or on your site - forward from July 2017
[4575] Learning not just what a program does, but how to design it in the first place.
[4574] repeat until in Lua - a one or more rather than a zero or more loop
[4573] Classic style OO code - in Lua
[4572] Tables with values and code in Lua - looks like an object?
Top or Show all for Programming in Lua

Python Programming
[4724] From and Import in Python - where is the module loaded from?
[4723] Conditional operators in Python
[4722] Embedding more complex code into a named block
[4721] When to check an object type - Python isinstance example
[4719] Nesting decorators
Top or Show all for Python Programming

And also ...
[4768] 2017 - the final six months
[4767] Some thoughts on 2017, and looking forward to 2018
[4761] Looking forward to the autumn.
[4759] Sale of effects and furniture - 12th and 13th August 2017
[4756] Learning how to be a more effective community partner
Top or Show all for And also ...

Public Transport
[4770] GW franchise - my response
[4765] Breich Station - current pictures, and future options
[4764] Some thoughts on the closure proposal for Breich station
[4760] Rotary Talk, 25/7/2017
[4727] Learning from travelling further afield
Top or Show all for Public Transport

Fun and Flames
[4392] Interview conditions,and other instructions to staff
[4354] Wiltshire Police - assuming someone is guilty just on the say-so of a member of the public?
[4329] Does Santa Claus need a CRB check?
[4304] Please do not ask me to be the chair!
[4282] On tipping - and the expectation of a tip
Top or Show all for Fun and Flames

Keynote Articles
[2483] Clustering on Tomcat
[2384] Looking ahead to the Autumn season of training and accommodation
[2144] Looking for a career change - Physician to Web Site Designer
[1955] How to avoid duplicating web page maintainance
[1857] November and December Public Course Schedule
Top or Show all for Keynote Articles

Unclassfied Articles
[4766] Moving on from Sunnyside and Devizes
[4758] Even more images!
[4757] Images ... continued
[4733] Python examples - updates under way
[4732] Reviewing TransWilts performance 2015-16
Top or Show all for unclassified

Public Transport Training from Well House Consultants And also ... Tcl, Tcl/Tk and Expect Programming in Lua Python Programming Well House Manor - Hotel and Training Centre Apache HTTP and Tomcat Servers The Perl Programming Language and its use Ruby and Ruby on Rails PHP - the language and its application C and C++ Programming Linux and Shell Programming Melksham SQL and MySQL For the Webmaster, Postmaster and moderator Java and the Java Environment Fun and Flames Running a training and hotel company Around, about and nearby to Wiltshire Client Side Languages (HTML, CSS, Javascript) Keynote Articles General Programming Topics

A little more about this newsletter ...

At Well House Consultants, we run niche IT training courses ... and we run a hotel for delegates on those courses and other visitors to Melksham too. And we make a lot of friends - have a lot of ambassadors with whom we want to keep in touch. So every day Graham (that's me, writing this piece) puts together an article or two which might include the latest sample programs that I've written during the current course, new information about Well House Manor - our business hotel, tips on search engine optimisation, announcements of upcoming public courses, pictures of local places, and even (on occasions) rants and whimsical pieces to keep those friends up to date and in touch. The feeds are available directlt via the Blog - "The Horse's Mouth", they're on our Twitter Feed and you can find me at my LinkedIn profile. But most people just want to look us up occasionally - every month or two, and then to catch up on the latest news just for their particular subjects of interest ... and that's what this newsletter is about

You'll find above the titles of ALL the new articles written in the last two months, listed by major subject area, and showing as (new) with their date of publication. You'll find additional articles in each category too - topping each category up to a minimum of five articles. And you'll find a link at the end of each section which lets you expand that section to show the titles of every article that's been published in that section. After all, "the old ones are often the best ones", aren't they?

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