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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Preparing data through a little bit of Perl

A Java course - and yet I used Perl to sort out some incoming data for a new exericse overnight. That's not because Perl is "better" than Java - its just that it's more appropriate for the quick, one-off data reformat that I needed.

  chop;
  $lyne .= $_ . " ";
  $k%=3;
  $k++;
  print "$lyne\n" if ($k == 3);
  $lyne = "" if ($k == 3);


Run with the "-n" command line switch on my system, and passing in the data file I had, this combines groups of 3 lines into a single line. The perl is quick, easy to write and virtually unreadable later. Java would have been longer (much longer) but more readable (much more readable) later.

The data? It's at [here] for course download - it contains the names, weights and heights of a number of celebreties so that delegates can create star objects (perhaps with a special subclass for delegates who are know by something other that forname - surname (e.g. Ciara, and Catherine Zeta Jones).

Sample from the original file:
  Courtney Love
  
  5 feet 9 inches / 175.26 cms 123.46-134.48 lbs
  Daniel Radcliffe
  
  5 feet 5.5 inches / 166.37 cms 114.64-125.66 lbs


Sample from the data file (resulting):
  Courtney Love 5 feet 9 inches / 175.26 cms 123.46-134.48 lbs
  Daniel Radcliffe 5 feet 5.5 inches / 166.37 cms 114.64-125.66 lbs


Perl courses - see [here]

(written 2015-01-15)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
P210 - Perl - Topicalization and Special Variables
  [493] Running a Perl script within a PHP page - (2005-11-12)
  [639] Progress bars and other dynamic reports - (2006-03-09)
  [969] Perl - $_ and @_ - (2006-12-07)
  [1136] Buffering output - why it is done and issues raised in Tcl, Perl, Python and PHP - (2007-04-06)
  [1221] Bathtubs and pecking birds - (2007-06-07)
  [1232] Bathtub example - (2007-06-14)
  [1289] Pure Perl - (2007-08-03)
  [1444] Using English can slow you right down! - (2007-11-25)
  [1508] How not to write Perl? - (2008-01-15)
  [1704] Finding operating system settings in Perl - (2008-07-10)
  [1705] Environment variables in Perl / use Env - (2008-07-11)
  [1728] A short Perl example - (2008-07-30)
  [1829] Dont bother to write a Perl program - (2008-10-10)
  [1860] Seven new intermediate Perl examples - (2008-10-30)
  [1922] Flurinci knows Raby Lae PHP and Jeve - (2008-12-04)
  [2833] Fresh Perl Teaching Examples - part 2 of 3 - (2010-06-27)
  [2876] Different perl examples - some corners I rarely explore - (2010-07-18)
  [2972] Some more advanced Perl examples from a recent course - (2010-09-27)
  [3449] Apache Internal Dummy Connection - what is it and what should I do with it? - (2011-09-19)
  [4301] Perl - still a very effective language indeed for extracting and reporting - (2014-09-20)
  [4682] One line scripts - Awk, Perl and Ruby - (2016-05-20)
  [4700] Obfurscated code - it might work, but is it maintainable? - (2016-07-02)


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Java Utility class - flexible replacement for array. Also cacheing in objects and multiple catch clauses example.
Some other Articles
The Campus in Melksham - name, logo, and livery choice
Accessing variables across subroutine boundaries - Perl, Python, Java and Tcl
TransWilts / Press and Publicity report for AGM / 30th January 2015
Java Utility class - flexible replacement for array. Also cacheing in objects and multiple catch clauses example.
Preparing data through a little bit of Perl
Philosophy behind object design - and how I applied in to a Java example
Splitting Java strings and extracting numbers
Interview conditions,and other instructions to staff
Refactoring Perl applications to give them a rosy future
Checking MySQL database backups have worked (not failed)
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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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