Perl is a general-purpose programming language originally designed for text manipulation. It is intended to be practical for everyday use rather than elegant or minimal. Perl is interpreted, dynamically typed, and designed to be efficient for programmers by including features like automatic memory management and regular expressions. It has become widely used for tasks like systems administration, web development, and bioinformatics. The language follows object-oriented programming concepts and has a large library of additional modules available through CPAN.
Introduction to PHP: Declaring variables, data types, arrays, strings, operators, expressions, control structures, functions, Handling sessions and cookies
File Handling in PHP: File operations like opening, closing, reading, writing appending, deleting etc.
Introduction to PHP: Declaring variables, data types, arrays, strings, operators, expressions, control structures, functions, Handling sessions and cookies
File Handling in PHP: File operations like opening, closing, reading, writing appending, deleting etc.
Perl is a very feature-rich language, which clearly cannot be discussed in full detail here. Instead, our
goals here are to (a) enable the reader to quickly become proficient at writing simple Perl programs and (b)
prepare the reader to consult full Perl books (or Perl tutorials on the Web) for further details of whatever
Perl constructs he/she needs for a particular application.
Our approach here is different from that of most Perl books, or even most Perl Web tutorials. The usual
approach is to painfully go over all details from the beginning. For example, the usual approach would be
to state all possible forms that a Perl literal can take on.
We avoid this here. Again, the aim is to enable the reader to quickly acquire a Perl foundation. He/she should
then be able to delve directly into some special topic, with little or not further learning of foundations.
How I Learned to Stop Worrying and Love Email::: The 2007 PEP Talk!!Ricardo Signes
Ready? 250 OK! Everybody loves email, right? Right! What better language than Perl for handling all your email needs? None, right? Right! After all, with about nine hundred email modules on the CPAN, the only question is: which tool is right for the job?
This year, the Perl Email Project is going to tell you what's what. We'll see what modules solve what problems, how they differ, and how they (may or my not) work together.
We'll also show what problems aren't well-solved, what is in the works to make it happen, and how you can help.
Perl is an interpreted language, meaning that a control program that understands the semantics of the language and its components (the interpreter) executes program components individually as they are encountered in the control flow.
Interpreted execution makes Perl flexible, convenient, and fast for programming, with some penalty paid in execution speed.
This is the first set of slightly updated slides from a Perl programming course that I held some years ago for the QA team of a big international company.
I want to share it with everyone looking for intransitive Perl-knowledge.
The updates after 1st of June 2014 are made with the kind support of Chain Solutions (http://chainsolutions.net/)
A table of content for all presentations can be found at i-can.eu.
The source code for the examples and the presentations in ODP format are on https://github.com/kberov/PerlProgrammingCourse
Introduction to writing readable and maintainable PerlAlex Balhatchet
An introduction to writing readable Perl code, for people who write Perl that other people may want to read. Covers the most important lessons from Perl Best Practices, and ends by showing how to use Perl::Critic to test that you are meeting the standards set out.
Given at FOSDEM 2011
Similar to Introduction to perl_ a scripting language (20)
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
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Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
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Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
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A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
2. Practical Extraction and Report Language
‘A general-purpose programming language originally developed for text
manipulation and now used for a wide range of tasks including system
administration, web development-CGI scripting, network programming, GUI
development, and more.’
‘The language is intended to be PRACTICAL (easy to use, efficient, complete) rather than
BEAUTIFUL (tiny, elegant, minimal).’
And Some More:
‘Many earlier computer languages, such as Fortran and C, were designed to make
efficient use of expensive
computer hardware. In contrast, Perl is designed to make efficient use of
expensive computer programmers.
Perl has many features that ease the programmer's task at the expense of greater
CPU and memory requirements.
These include automatic memory management; dynamic typing; strings, lists, and
hashes; regular expressions;
3. Larry Wall invented PERL in the mid-1980's
Larry Wall was trained as a linguist, and the design of Perl is very much
informed by linguistic principles.
Examples include Huffman coding (common constructions should be
short), good end-weighting (the important information should
come first), and a large collection of language primitives. Perl favors
language constructs that are natural for humans to
read and write, even where they complicate the Perl interpreter.’
Perl has rapidly become the language of choice for writing programs
quickly and robustly across a wide range of fields - ranging from
systems administration, text processing, linguistic analysis, molecular
biology and (most importantly of all) the creation of dynamic World
Wide Web pages. It has been estimated that about 80% of dynamic
webpages worldwide are being created by Perl programs.
4. PERL encompasses both the syntactical rules of the
language and the general ways in which programs are
organized
It is dynamically typed language.
Relatively easy to learn (and easier to make a mess
too).
incredibly flexible coding style (some argues it is too
flexible).
Perl is interpreted not complied hence its scripting
language.
It follows OOPs concepts.
http://perldoc.perl.org/perldoc.html
5. CPAN(comprehensive Pern Archive
Network) : consists of Additional perl
modules(more than 100,000 modules),
documentation,various releases etc.,
HTTP://cpan.org/
6. Define the problem
Search for existing code
Plan your solution
Write the code
Modify ->Debug ->Modify
Run the code
7. Now-a-days On *nix
OSes Perl comes
installed
automatically. And
can be located at
/usr/bin/perl and /
usr/local/bin/perl
To install Perl on
Windows :
http://strawberry
perl.com/
http://www.activ
estate.com/active
perl
8. Open a terminal
Make a perl dir(directory) in your home dir
Move into the perl directory
Create a file named ‘hello_world.pl’
Open the file in your text editor
Code the program
Save the file
Make the program executable
Test the program.
10. Location of perl is normally in
/usr/bin/perl and /usr/local/bin/perl
Perfix the script with #!/usr/bin/perl
And also you can type in “use <version>” to use the
latest version
#!/usr/bin/perl -w
use strict;
use warnings;
my $message = ‘Welcome to perl tutorial’;
print “t hello world $message.!!n”;
print ‘hello world $message.!!n’
#prints $messagen literally
11. Scalar: a single piece of information. Scalars can
hold numbers or text
$ is the identifier of scalar in perl
There are special variables for the system: $ARGV,$!
@scores = (32, 45, 16, 5);
@cars = (BMW,Renault,Jaguar,Ferrari); or @cars =
qw(BMW Renault Jaguar Ferrari);
my @sorted = sort @cars;
my @backwards = reverse @scores;
$multilined_string = <<EOF; This is my multilined string note that I am
terminating it with the word "EOF". EOF
Scalar values are represented as $var = <num/char> ; Dynamic typing
12. Array/List: an ordered collection of scalars
my @array = ( 1, 2 );
my @words = ( "first", "second", "third" );
my @mixed = ("camel", 42, 1.23);
print $mixed[$#mixed]; # last element, prints out
1.23
Subscripts
An array can be accessed one scalar at a time by specifying a
dollar sign ($ ), then the name of the array (without the
leading @ ), then the subscript inside square brackets.
For example:
@myarray = (5, 50, 500, 5000);
print "The Third Element is", $myarray[2], "n";
13. Declaration of HASHes
%scientists =
(
"Newton" => "Isaac",
"Einstein" => "Albert",
"Darwin" => "Charles",
"Feynman" => "Richard",
);
print "Darwin's First Name is ", $scientists{"Darwin"}, "n";
Hash subscripts are similar, only instead of square brackets curly brackets
are used
14. my %fruit_color = ("apple", "red", "banana", "yellow");
To get at hash elements:
$fruit_color{"apple"}; # gives "red“
To get a lists of keys and values with keys() and values().
my @fruits = keys %fruit_colors;
my @colors = values %fruit_colors;
15. Some scalar variables have special meaning
in Perl. Of note are `$_`,
`$!`, `$0`, and `$$`.
16. There are system defined functions for
operations on Scalar variables, Arrays,
Hashes, File Handlers, Regular Expressions,
Sub routines, Modules etc., which appear like
keywords some times and take arguments
Eg: Chomp, join, my, our, grep, mkdir, open,
import,defined,undef,sort,reverse etc.,
For detailed description follow: http://perldoc.perl.org/perlfunc.html#Perl-Functions-by-Category
17. double quotes(“), single quotes(‘) and
multi-line quoting(qq) :
$var =10;
$text = “There are $var apples”
$text2 = ‘There are $var apples’
$text3 = qq{
There
are
$var
apples};
18. Functions are blocks of code which perform specific task
#takes no input and returns no output… common practice to use
#‘main’ as the starting point in a script.
sub main {
…
}
#Takes 2 *scalars* as input sums them and returns one scalar.
sub sum_2_numbers {
my ($numA,$numB) = @_; #get passed in values
my $sum = $numA+$numB; #sum numbers
return($sum); #return sum
}
19. if/else
if ( condition ) {…} elsif ( other condition ) {…} else {…}
Unless
die "Can't cd to spool: $!n" unless chdir '/usr/spool/news';
While
while (($key, $value) = each %hash) {
print $key, "n";
delete $hash{$key};
}
Until
$count = 10; until ($count == 0) { print "$count "; $count--;}
foreach
foreach $index (0 .. $#ARRAY) {
delete $ARRAY[$index];
21. Undefined/” ”/0 values are treated as
false
Scalars are evaluated as:
numbers are evaluated as true if non-zero
strings are evaluated as true if non-empty
$var = “false”;
if($var)
{
say “$var is true!”;
}
22. Scripts can take inputs in two ways:
Arguments
./print_args.pl ARG1 ARG2
Prompted inputs from users
$user_text = <STDIN>
23. Things don’t always come out as expected. It
is good to check the output of important
functions for errors, it is highly
recommended to validate any input from
users or external sources
Die
Warn
Editor's Notes
Get unix/programming background Purpose of the course is more a introduction to perl, a quick tour rather than a programming course.