listitemizator: perl -MLWP::UserAgent -e "print qq(<li>[id://$ARGV[0]|).LWP::UserAgent->new->get('http://www.perlmonks.org/index.pl?node_id='.$ARGV[0])->title,']</li>'"

index @ARGV
satura lanx or miscellanea	learning and teaching Perl
reinventing the wheel	MARPA
security	threads parallel programming
signals	closures functional programming and high order Perl
modules	testing
debug	OO Perl Objects
Raspberry Arduino	windows peculiarities
windows spawn system and filehandles	portability and filesystem redirection
PAR pp exe	logging
large files	Unicode UTF-8
Tk GUI Gtk	GD and graphic
fun	DBI database
ack and colorized output	newline
eval	context
flip flop	sort
strict	pack unpack
array	complex datastructures and dumping methods
regexs	compiletime and runtime
benchmark	caller and BEGIN
symbol table and typeglobs	Perl history
Dancer Dancer2 Plack PSGI	CGI
jQuery Angularjs AJAX Bootstrap	web programming in general
SSL	LWP
web scraping	web performance
SOAP and WSDL	XML
SSH	math integers and random PDL
Tartaglia Pascal and Erathostenes	Perl is dead..
game	oneliners
perl idioms	music and sounds
other useful homenodes

satura lanx or miscellanea

moved down..

reinventing the wheel

• zentara about reinventing the wheel
• "You never really know how a wheel works, until you tear it apart. I bet you now know more than most about the http protocol, now that you built your own. I think building your own webserver is a great educational exercise, because it exposes you to all the problems involved, and also makes you appreciate the pre-made wheels that are given to us."

learning and teaching Perl

• Teaching perl: Re: How to teach perl to novice programer and Re: What is the best way to master perl (do your homework)
• about learning process
• an interesting reading Exploring Programming Language Architecture in Perl found at Writing a Programming Language in Perl another intersting Re: At what rate are YOU progressing? by Dominus
• to valuable for a new Perl job by YourMother
• OT programming for kids
• Learning Perl
• Trudging along the learning perl path.
• Re: Online Tutorial To Get Started lot of links
• Knuth: Computer Programming as an Art 1974
• The path to mastery by tilly
• RFC: Self Assessment Perl
• Antiquitates - liber I - In memoriam Robert M. Pirsig
• Antiquitates - liber II - De trivio atque quadrivio
• RFC - Discipulus's step by step tutorial on module creation with tests and git
• Perl Automateaching -- part 1: brainstorming points to The Technology of Teaching
• automateaching -- part 2: proof of concept
• RFC: Perl Learning Plan
• The rookie drama
• https://processing.org/ a flexible software sketchbook and a language for learning how to code
• https://en.perlzemi.com/ and https://perlclub.net/en
• https://cjshayward.com/perl/ (but see comments ;) mentioned in Beginner Recommendations

MARPA

• Marpa and binary trees
• Marpa example by choroba on validate quoted string
• Marpa example by choroba on nested sums of weighted integers
• a toy language in Perl
• Re: Parsing Boolean expressions with MARPA::R2 by choroba
• Re^9: Generate a truth table from string with Marpa
• First steps with Marpa::R2 and BNF
• A dice roller system with Marpa::R2
• Cannot get Marpa::R2 to prioritise one rule over another

security

• Perl secure coding standards
• Open Web Application Security Project (OWASP)
• Re: Security techniques every programmer should know (Security References) excellent scaffold by eyepopslikeamosquito

threads parallel programming

• spotted on cavac's homenode BrowserUk and flexvault wonderful examples on threaded server
• Programming languages for multicore computers and gentle introduction to MCE and MCE by marioroy and also interesting thread started by karlgoethbier
• MCE on perltricks
• Threads From Hell #1
• Threads From Hell #2
• Threads From Hell #3
• multiple threads to STDOUT
• threads and signals
• threads and signals on windows
• joining threads and order of things matter
• share data between threads
• Threaded read from files comparison
• BrowserUk and marioroy examples
• Speed up suggestion point to the incredible MCE module
• threads and memory with update examples
• threads shared example
• about threads on windows and an ufo Q module. and Adding parallel processing to a working Perl script also see zentara words and links also another example here zentara's on IPC::Shareable and Parallel::ForkManager and Handling error on threads and ikegami's monitor child exit threads on Gtk problems and another Gtk threaded application Threads::Queue example
• simple parallel program examples
• The problem with "The Problem with Threads"
• Trying to Understand the Discouragement of Threads
• Interrupt multi-process program while using MCE::Shared hash: END block code does not (all) run
• parallel programming and MCE - hubris and the frame my meditation about MCE
• about frameworks and parallel programming a must read: Your main event may be another's side-show.
• MCE article at perltricks.com
• Re^2: search for particular elements of hash with multiple values bechmark of parallel approachs
• Parallel::ForkManager + MCE::Shared demonstration marioroy refactory zentara's Re: Semaphores leaks with IPC::Shareable
• Prima + MCE::Hobo demonstration another marioroy's useful example
• Child process inter communication very good examples by various monks and Inmbox.pm by marioroy
• Crash with ForkManager on Windows
• Threading with a twist opinion and panorama (this thread started the parallel.pl project)
• parallel programming and MCE - hubris and the frame
• Parallel download Tk
• Win32::GUI and threads issue
• How can I read DATA in parent and child?
• Parallel processing on Windows nice explanations and useful links
• running a function for different list parallely using fork where tybalt89 points to his:
• Forking::Amazing
• Kill a child nicely crudest title ever!

signals

• SIGNALS: Signals and END block
• Corion attempt to implement signals via named pipe on win32Implementing signals for Win32 Perl using named pipes
• BrowserUk about signals on Win32 win32, ctrl-c, sleep, and signals
• again win32 signals signals in win32?
• signals and strawberry Signals in Strawberry Perl: Name or number?
• signals vs windows Signals vs. Windows
• signal and CTRL-C ctrl + c on Win32 (signal handling)
• ms docs about signals??https://msdn.microsoft.com/en-us/library/xdkz3x12(v=vs.71).aspx
• win32.c source code http://perl5.git.perl.org/perl.git/blob/6aa4fbb50135d4863535200030aadfeb8c583c6e:/win32/win32.c#l4174
• %SIG hash localized
• %SIG and XS et alia
• pipe <STDIN >and @ARGV difference
• signals and signals on windows
• Kill a child nicely (crudest title ever btw ;)

closures functional programming and high order Perl

• about closures Merlyn column and Why closures where tye sythetize 4 types of progrmming, Corion pointed me to Kingdom of Nouns unrelated but quite related Why I like functional programming
• Functional programming and monads
• How A Function Becomes Higher Order and Real life examples of closures and also Closures Explained also tobyink on closures
• Closure Over Scalar?

modules

• About new modules: perlnewmod that links also to this one... Create a ppd module distribution and also Corion's answer
• a lot of links about naming and new modules
• and about installed modules
• About Packages and modules namespaces
• Writing Solid CPAN Modules
• require "shared.pl" with use strict; points to
• Include subs from different perl file
• A brief question about testing/best practices
• testable code - Scriptor and Programmers
• skimmable code
• José's Guide for creating Perl modules
• Exporter and Exporting-Without-Inheriting-from-Exporter
• Behavior of 'our' variables in the package-namespace point to package vs module? that contains zentara's package/module tutorial
• advice on new module points to CPAN tutorials
• and How to make a CPAN Module Distribution
• and What are the files in a CPAN distribution?
• modules and reusable code
• Dont repeat... your module VERSION or more modern VERSION section in POD
• cpanm track modules installed (fore reinstall later)
• Template to create modules
• GetOpt::Long POD::Usage dynamic duo
• Joel on software - The Process of Designing a Product
• How do I write a new sub in a cloned CPAN module and test it by bypassing the Original Module?
• afoken about what happen whe you use a module
• How to patch a module?
• module dependencies using CPAN::client
• Re^3: Perl Modules -- abstraction and interfaces me about modules and OO terminology
• Moving from scripting to programming
• spot in which module is defined a function my contribution using symbol table
• way to find module memory usage? and memory usage of modules
• Re^3: Splitting program into modules
• Author tests or standard tests?
• code duplicate in tests -- code or custom module only needed to test
• RFC - Discipulus's step by step tutorial on module creation with tests and git
• Criteria for when to use a cpan module
• Writing Solid CPAN Modules
• Technique for executable modules
• about the various PANs
• Technique for executable modules
• Can a Perl module "inspect" itself and provide details about methods and parameters?
• Modules as configuration files
• What do I use to release a module to CPAN for the first time?
• File::ShareDir to have modules data available at runtime
• let Makefile.PL to do the Readme file for me -- new target? follow links and Intrepid's scratchpad
• EU::MM recipes -- a lazy Makefile.PL for README and repository info
• Removing unused Perl modules
• How to redefine a modules private function? constants, inlined subs, hotpatching.. very interesting

testing

• good thread about test testing and habits.
• change a script to be testable, caller info
• Tux abou refactoring code and Test driven design
• Testing methodology, best practices and a pig in a hut. by BrowserUk who point to http://www.sqetraining.com/sites/default/files/articles/XDD8375filelistfilename1_0.pdf
• Effective Automated Testing
• the sorry state of Perl unit testing framework
• CPAN test scripts, "run" directory, and test data files
• good advice form stevieb and jeffa at testing perl
• Automate and dispatch unit test runs across perl/berrybrew on remote Windows and Unix
• Writing tests when you don't know what the output should be
• Re: Devel::Cover for myfile.pl with different command-line input arguments
• http://www.vagrantup.com/ replicate dev env
• check your script against this
• A brief question about testing/best practices
• testable code - Scriptor and Programmers
• the new Test2 framework?
• RFC: Test::Contract - extensible object-oriented runtime check series
• Test Driven Development, for software and for pancakes
• solved Test module to compare results between different runs (save/load) aka regression tests
• Needing help on testing various approach to test existing scripts
• How to write testable command line script? a good thread
• solved Test module to compare results between different runs (save/load)
• RFC Discipulus's step by step tutorial on module creation with tests and git
• Basic Testing Tutorial by hippo
• Test::Deep::noclass propagation

• lot of links about debugging Perl code and Use strict warnings and diagnostics
• How to perldebug a Term::ReadLine application
• hard to debug windows memory error
• Use strict warnings and diagnostics or die
• Fudge means a sweet.. but here you have a very detailed error reporting sub.
• using Log4perl instead of debugger
• About error handling
• IPC Open3 Catching errors by Ikegami
• Athanasius points to Test::LeakTrace
• Perl debugging initialization: did I just reinvent the wheel?
• Re: specify file to debug AND file containing debug commands on command line
• spot memory leak
• breaking open a scalar with unpack P points to Perlguts illustrated look at all B::* modules
• Re: Perl Memory problem ... by eyepopslikeamosquito LOT of links!
• RFC: Devel::Trace 0.13 by shmem
• here etj: use constant DEBUG => $ENV{MY_DEBUG};  DEBUG and print "something\n"; optimized by perl interpreter

OO Perl Objects

• interesting thread about object oriented Perl that points to this subthread and to a
• very deep discussion about Perl object OO and Moose
• OOP how to (not) loose encapsulation
• About object and basics
• tobyink about Stop Creating Mutable Objects
• Arunbear a bird view on Object Oriented Perl
• OO and lazy setter/getter
• tobyink about Moose and Moo
• Perl object memory overhead view the interesting replies.
• Damian Conway's ten rules for when to use OO
• zydeco by tobyink
• Cor -- An object system for the Perl core 2020 Ovid expose the project
• Re: Where can I learn more about blessed data? -- a basic example
• Factory classes in Perl
• Blessing with unknown classnames
• get the list of methods and variables

Raspberry Arduino

• Perl on RaspberryPi
• related to RaspberryPi
• Raspeberry Pi 1,2,3 general informations
• Displaying my PM post count and XP on an LCD with RPi::WiringPi
• Raspberry Pi wiringPi API wrapper released
• Win32::SerialPort and Arduino
• measuring volume from microphone
• Win32::SerialPort finally fixed for 64 bit Perl
• Perl interface to analog inputs on the Raspberry Pi
• sensor grabing data different options - Web monitoring with Perl
• Raspberry Pi with analog inputs/outputs, driven by Perl
• Human-visible light levels - Adafruit Breakout board with I2C
• Finally! Perl code for the MCP3008 Analog to Digital Converters
• Given my Raspberry Pi work, Happy Pi day Perlmonks!
• Perl wrapper for v4l2-ctl multiplexing video stream (display and record)
• GPS tracking with Perl
• Reading/writing Arduino pins over I2C with Perl
• Termux for all your Perl-needs on Android
• Perl interface to analog inputs on the Raspberry Pi
• RPi::WiringPi by stevieb
• eBook Released! Programming the Raspberry Pi with Perl by stevieb
• Controlling USB on Raspberry Pi

windows peculiarities

• About windows inode here BrowserUk and others inodes found via gnuwin32 seems more recent of unxutils
• perl.exe vs wperl.exe here and wperl.exe and about temporary files on windows and SIDs or Unaltered child return code on Windows and win32 exit code after a crash guide
• windows too much page faults and patch
• Resolved: It does not change password in LDAP Windows 2012 R2
• Win32API::Registry page
• "executable suffixes" for -x on win32 (perlport)
• Win32::OLE SaveAs Unicode
• The implementation of SIGHUP in Win32 Perl
• Win32::OLE and Task Scheduling - Invalid Query
• MSYS2
• Win32::Daemon service doesn't reach RUNNING state solved(2019)
• Handling MSWin Script Output
• The ActiveState Platform and Perl 5.32
• Re^4: Tk installation fails on Windows 10 with strawberry perl the solution
• hippo's home has a bounch of useful links about the UnfortunateOS
• Using MinGW to build perl on windows forcing it to expand * into glob in cmd.exe
• mtime (stat) unreliable "When writing to a file, the last write time is not fully updated until all handles used for writing have been closed." :)

windows spawn system and filehandles

• Passing an open handle to another process on win and about system 1 and system detached many interesting comments in The importance of avoiding the shell and salva's question and tye's answer about Windows and pipes that don't close.. quoting BrowserUk from hereOn Windows, parameters are passed to executables as a single string, so the list forms of system & open etc., join the list into a single string before calling CreateProcess(). Passing arguments to programs on Unix and Windows by afoken
• arguments to be protected from shell
• Surprised by limitation of Win32 "system(1" hack
• Re^5: Win32: Setting a layer with binmode causes problem with close() on Windows (PerlIO silently fails to close the file)
• Win32 limit to number of calls to system()?
• spawning windows children (revisted)
• String::Interpolate suggested by choroba
• open in memory file - open to a reference - be aware of..
• open a filehandle from an HERE doc
• ambrus default schema to use GetOpt::Long cgrep: Egrep clone with function name display
• system commands in parallel on windows
• Win32::RunAsAdmin UAC of win7
• Restarting a Perl script on Windows 10

portability and filesystem redirection

• afoken explain DOS and CMD.exe shell, very well (interesting thread about IPC::Open3 on win32)
• Re: Writing portable code
• writing portable code OS independent perl script and Re: Command line arguments not passed in Win7 ( regqueryperl.bat ) and Question on Strawberry's Portable .bat file and also variables substitution in cmd.exe
• and Re^2: Dangerous Characters for system calls also relocate Perl 5.20. Also see the /D switch of cmd.exe that point here Portable win32 perl application without PAR::Packer where anonymous point explain portability of ActiveState Perl and here
• about win file system redirection 32 64bit madness
• me about filesystem redirection
• me about registry redirection
• strawberry space and ampersand in PATH
• 64bit perl caveats?
• some test of mines about Permission denied writing to Windows 10
• portability / system / elegance where IPC::Run3 is suggested
• Re: Perl Newbie question -- portable scripts - OS agnostic tools me about portability
• Re^5: Windows single sign-on / NTLM question haukex points IPC::Run3 which use Win32::ShellQuote
• File::Spec->case_tolerant() is broken

• about app packaging and kirsle blog too http://www.kirsle.net/blog/kirsle/install-par-packer-on-windows an some good link here too
• decrypt a packed perl program
• Par pp and link to pp -x
• par pp executable TK and change the icon
• PAR pp checklist
• depends.exe example usage and objdump.exe dependences walker
• PAR pp and included files, just to remember
• Problem pp PAR on strawberrry
• ppsimple simple packer!!
• how Anonymonks understand portable perls
• change icon to a PAR exe or exe in general
• marioroy's template for MCE to be packed into an exe with PAR pp
• Pre-compiled Perl? perlcc was abandoned points to a fun What happened to perlcc? and to definitions at http://www.differencebetween.info/difference-between-opcode-and-bytecode
• switching from static Perl to Shared static perl and shared one (?)
• Re: Icon for pp on Strawberry points to resourcehacker(tested) and zewaren.net

logging

• Multiplexing log output: Log4perl of the poors is mine prof of concepts to mimicry Log4Perl. Interstings also Loops's attempt found at Output to STDOUT and print last line to console and use modules IO::Tee Tie::STDOUT examples at Split output to STDOUT as well as a file
• log4perl selective output
• Choosing a log level

large files

• Optimising large files processing
• Recommendations for efficient data reduction/substitution application
• Using indexing for faster lookup in large file
• reading large file where foreach my $line (<$readHandle>) { is list context and while (defined( my $line= <$readHandle>)) { is scalar context by Corion
• reading char bytes faster
• Perl's poor disk IO performancePerl's poor disk IO performance] with very nice benchs
• Memory Leak when slurping files in a loop -- sliding window by LanX
• Re: Multithreading a large file split to multiple files

Unicode UTF-8

• Unicode utf-8 codepoints and graphemes and also The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) also when i will be able to understand all this post about Unicode i'll be happy in the new millennium
• Why am I having so much trouble and pain with UTF-8 in perl?
• UTF8 DB and web
• windows problem with UTF8 pathnames
• Mixed Unicode and ANSI string comparisons?
• Perl on Windows: file names with accented characters, UTF-8 and -e
• Re: Convert special characters in UTF8 (layers) -- Devel::Peek
• unicode Perl bug
• unicode issues in Perl
• tchrist No magic bullet at SO
• Re: printing Unicode works for some characters but not all unicode versions supprted by Perl and examples
• Re: Accent file names issue Hippo's tests and a pointer to Win32::Unicode
• Re: special characters in parsed json rendering badly in browser where tinita points to this article
• binmode(':encoding(UTF-8)') did not produce utf8 for me

Tk GUI Gtk

• Tk and forks links
• BrowserUk threads to search in a bi file
• neat fork example
• GUI programming Perl panorama
• RFC: Compiling Gtk+ stack on windows with strawberry perl
• Tk MainWindow and another TopLevel spawn order when I discovred also Re^2: Term::ReadLine and Tk by zentara
• lot of link about Tk in comments by monks ... but discovered Prima! and PerlQt
• Tkzink and zentara's commentary about tkzink
• Tk::scale and TK::Spinbox to validate entries
• old but useful: behind the gui lives the shell
• zentara on x and y and canvas tags binding
• Re: How do I bind the Mousewheel to Tk::BrowseEntry?
• Perl Tk run on Android. It works
• Drawing with Perl/Gtk2
• IUP another GUI framework
• Re: call a sub from Tcl code in Tcl::pTk where jcb explains differences between Tk and Tcl::pTk

GD and graphic

• BrowserUk on GD image format
• GraphicsMagick instead of ImageMagick
• Reflections on graphic screwing! by BrowserUk
• Reading RW2 (Panasonic) raw digital image format

fun

• just for fun (please do not feel offended, humor is humor..): if programming laguages were religions or cars other cars or car pictures or women or boats or drinks or bands or philosophers or
• natural language?
• humor geek hist
• eyepopslikeamosquito impressive Golf list
• Re^2: Cookie->fetch problem most hilarous post since years...
• Name Space
• Re^2: Subroutine processes only one file in the directory
• Posting incomplete code will cause an incomplete an
• I have never used cpan, but I have been watching some youtube videos. (sorry could not resist ;)
• April 1 Article on Perl
• 93% of Paint Splatters are Valid Perl Programs
• Chatterbox Shenanigans eff_i_g's homenode

DBI database

• Tricks with DBI very old but usefull and GMAX DBI tutorial GMAX The fine art of database programming also Databases made easy by GrandFather
• DBI placeholders wit multiple values
• handling dbi error good example
• DBI recipes the must read by gmax
• Accessing Microsoft SQL Server from Linux using DBD::Sybase

ack and colorized output

• colorized output
• Ack beyond grep

• afoken: newline gory details
• BrowserUk newlines on windows

• defending eval string! "Perl was not designed to stop you from doing stupid things, because that would also stop you from doing clever things. Plus nobody can stop you from doing stupid things." found at http://www.nntp.perl.org/group/perl.perl5.porters/2012/09/msg193300.html
• $^P=0x100 shows eval line in file
• eval $@ and other considerations
• meditation about eval error stack
• canonical doc explaing need for "eval { ... } or do {...}" construct better eval ... ;1}

• about context and other links too
• If you believe in Lists in Scalar Context, Clap your Hands
• merlyn's column about context
• ModernPerl - context

flip flop

• flip flop operator Perl Idioms Explained.. and Hidden features of Perl and also Flipin good, or a total flop?
• other flip flop considerations and links

sort

• Custom Sort An AoA intersting serie of replies about costum double sort.
• A Fresh Look at Efficient Perl Sorting

• poem on strict... The strictures, according to Seuss
• Levels of strictness and compatibility
• when use -w or use warnings module related and very interesting
• How to determine if strict is enabled where caller(0) )[8] & 0x602 et similia are quoted

• pack unpack tutorial and perl.pack.unpack.printf.cheat.sheet
• unpack is not so obviously the opposite of pack (padding)
• pack little endian big endian numbers

• array and hash and other speed comparison
• Fast Way to find one array in second array by Browseruk
• Weighted frequency of characters in an array of strings -- explained
• Shortcutting grep in boolean context
perlancar bencmarks looking for first value available
• Re: Array looping use join and xor the joined strings, counting nuls with tr

• How can I visualize my complex data structure?good post about dumping complex datastructure, and comparison on Perl serialization options also GrandFather note

• Note that $, % and @ don't tell you what type variables are, they tell you what type of thing an expression returns. So $ref returns a scalar which may be a reference to an array or a hash. @$ref and @{$ref} return arrays (they are equivalent) by dereferencing $ref. The {} version is much clearer (and often required) when the expression used to get the reference is complicated.

• afoken describes Data::Dumper JSON Storable YAML differences

regexs