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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.
Here documents

If you find yourself repeating something within a piece of code .... there's probably an easier way. After all, most programmer are lazy and that applies just as much (if not more) to the authors of the languages. Remember to use functions / methods / subs / procs / defs rather than cut and paste, and remember to use required / used / included / imported files too.

From time to time, I see a chunk of text with the word "print" carefully inserted in front of each line, and each line of text embedded in quotes. This is just the repetition I'm suggesting that you avoid - although in this case the solution is a "here document".

In Perl, write:

print <<"DONE";
This is a block of text to print
that is several lines long
DONE

and in PHP:

print <<<DONE
This is a block of text to print
that is several lines long
DONE;

References: [Perl] and [PHP].
Samples [Perl] and [PHP].
(written 2004-08-28, updated 2011-01-29)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
P205 - Perl - Initial String Handling
  [254] x operator in Perl - (2005-03-22)
  [324] The backtick operator in Python and Perl - (2005-05-25)
  [970] String duplication - x in Perl, * in Python and Ruby - (2006-12-07)
  [987] Ruby v Perl - interpollating variables - (2006-12-15)
  [1195] Regular Express Primer - (2007-05-20)
  [1608] Underlining in Perl and Python - the x and * operator in use - (2008-04-12)
  [1849] String matching in Perl with Regular Expressions - (2008-10-20)
  [1860] Seven new intermediate Perl examples - (2008-10-30)
  [2798] Perl - skip the classics and use regular expressions - (2010-06-08)
  [2816] Intelligent Matching in Perl - (2010-06-18)
  [2832] Are you learning Perl? Some more examples for you! - (2010-06-27)
  [2963] Removing the new line with chop or chomp in Perl - what is the difference? - (2010-09-21)
  [3005] Lots of ways of doing it in Perl - printing out answers - (2010-10-19)
  [3411] Single and double quotes strings in Perl - what is the difference? - (2011-08-30)
  [3547] Using Perl to generate multiple reports from a HUGE file, efficiently - (2011-12-09)
  [3548] Dark mornings, dog update, and Python and Lua courses before Christmas - (2011-12-10)
  [3770] Sample answers to training course exercises - available on our web site - (2012-06-21)

H107 - String Handling in PHP
  [54] PHP and natural sorting - (2004-09-19)
  [337] the array returned by preg_match_all - (2005-06-06)
  [422] PHP Magic Quotes - (2005-08-22)
  [463] Splitting the difference - (2005-10-13)
  [493] Running a Perl script within a PHP page - (2005-11-12)
  [558] Converting between acres and hectares - (2006-01-08)
  [560] The fencepost problem - (2006-01-10)
  [574] PHP - dividing a string up into pieces - (2006-01-23)
  [589] Robust PHP user inputs - (2006-02-03)
  [608] Don't expose your regular expressions - (2006-02-15)
  [642] How similar are two words - (2006-03-11)
  [716] Evaluating arithmetic expressions in configuration files - (2006-05-10)
  [728] Looking ahead and behind in a Regular Expression - (2006-05-22)
  [1008] Date conversion - PHP - (2006-12-26)
  [1058] PHP Regular expression to extrtact link and text - (2007-01-31)
  [1336] Ignore case in Regular Expression - (2007-09-08)
  [1372] A taster PHP expression ... - (2007-09-30)
  [1533] Short and sweet and sticky - PHP form input - (2008-02-06)
  [1603] Do not SHOUT and do not whisper - (2008-04-06)
  [1613] Regular expression for 6 digits OR 25 digits - (2008-04-16)
  [1799] Regular Expressions in PHP - (2008-09-16)
  [2046] Finding variations on a surname - (2009-02-17)
  [2165] Making Regular Expressions easy to read and maintain - (2009-05-10)
  [2238] Handling nasty characters - Perl, PHP, Python, Tcl, Lua - (2009-06-14)
  [2629] Curly braces within double quoted strings in PHP - (2010-02-09)
  [3020] Handling (expanding) tabs in PHP - (2010-10-29)
  [3424] Divide 10000 by 17. Do you get 588.235294117647, 588.24 or 588? - Ruby and PHP - (2011-09-08)
  [3515] PHP - moving from ereg to preg for regular expressions - (2011-11-11)
  [3516] Regular Expression modifiers in PHP - summary table - (2011-11-12)
  [3534] Learning to program in PHP - Regular Expression and Associative Array examples - (2011-12-01)
  [3788] Getting more than a yes / no answer from a regular expression pattern match - (2012-06-30)
  [3789] More than just matching with a regular expression in PHP - (2012-06-30)
  [3790] Solution looking for a problem? Lookahead and Lookbehind - (2012-06-30)
  [4071] Setting up strings in PHP - (2013-04-27)
  [4072] Splitting the difference with PHP - (2013-04-27)


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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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