Tonel repositories in VA Smalltalk by Esteban MaringoloFAST
Tonel is the baseline format used by Pharo for file based source code storage.
As such, it was developed considering only Pharo needs.
This talk is a report of the challenges and workarounds found to support exporting and importing Tonel based repositories in VA Smalltalk, and dialect differences in general.
A short intro to reactive systems, Scala, Akka and the Play Framework, with a Twitter based live demonstration and performance meters. Find the sample code at https://github.com/kjozsa/reactive2
Tonel repositories in VA Smalltalk by Esteban MaringoloFAST
Tonel is the baseline format used by Pharo for file based source code storage.
As such, it was developed considering only Pharo needs.
This talk is a report of the challenges and workarounds found to support exporting and importing Tonel based repositories in VA Smalltalk, and dialect differences in general.
A short intro to reactive systems, Scala, Akka and the Play Framework, with a Twitter based live demonstration and performance meters. Find the sample code at https://github.com/kjozsa/reactive2
Do you have some experience with another framework or language and are looking to learn Wordpress? If so this tutorial is for you!
We'll cover how to get your first site up and configure settings like a pro. This will enable extreme customization programatically in the future.
Design for conversion, nuture for customersClique Studios
Each marketer must prioritize their focus and pages with specific goals for conversion and lead nurturing. Getting your visitors to sign up for an email list, read a white paper, and buy a product are some of the highest value actions a user can take. In this session we'll focus on how you’ve got to give the user something, a great experience, if you expect to get something, a customer.
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Do you have some experience with another framework or language and are looking to learn Wordpress? If so this tutorial is for you!
We'll cover how to get your first site up and configure settings like a pro. This will enable extreme customization programatically in the future.
Design for conversion, nuture for customersClique Studios
Each marketer must prioritize their focus and pages with specific goals for conversion and lead nurturing. Getting your visitors to sign up for an email list, read a white paper, and buy a product are some of the highest value actions a user can take. In this session we'll focus on how you’ve got to give the user something, a great experience, if you expect to get something, a customer.
Php mysql classes in navi-mumbai,php-mysql course provider-in-navi-mumbai,bes...anshkhurana01
php-mysql classes in navi-mumbai,php-mysql course-provider-in-navi-mumbai,best php-mysql class in navi-mumbai
B2/6/2 Vashi ,Navi Mumbai, Contact:09892900103/9892900173 enquiry@vibrantgroup.co.in
The PHP Hypertext Preprocessor (PHP) is a programming language that allows web developers to create dynamic content that interacts with databases. PHP is a server-side scripting language, like ASP .PHP scripts are executed on the server.PHP supports many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.) .
Custom, in depth 5 day PHP course I put together in 2014. I'm available to deliver this training in person at your offices - contact me at rich@quicloud.com for rate quotes.
Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
Yet, they often turn into annoying tasks riddled with frustration, hostility, unclear feedback and lack of standards. How can we improve this crucial process?
In this session we will cover:
- The Art of Effective Code Reviews
- Streamlining the Review Process
- Elevating Reviews with Automated Tools
By the end of this presentation, you'll have the knowledge on how to organize and improve your code review proces
Hand Rolled Applicative User ValidationCode KataPhilip Schwarz
Could you use a simple piece of Scala validation code (granted, a very simplistic one too!) that you can rewrite, now and again, to refresh your basic understanding of Applicative operators <*>, <*, *>?
The goal is not to write perfect code showcasing validation, but rather, to provide a small, rough-and ready exercise to reinforce your muscle-memory.
Despite its grandiose-sounding title, this deck consists of just three slides showing the Scala 3 code to be rewritten whenever the details of the operators begin to fade away.
The code is my rough and ready translation of a Haskell user-validation program found in a book called Finding Success (and Failure) in Haskell - Fall in love with applicative functors.
A Study of Variable-Role-based Feature Enrichment in Neural Models of CodeAftab Hussain
Understanding variable roles in code has been found to be helpful by students
in learning programming -- could variable roles help deep neural models in
performing coding tasks? We do an exploratory study.
- These are slides of the talk given at InteNSE'23: The 1st International Workshop on Interpretability and Robustness in Neural Software Engineering, co-located with the 45th International Conference on Software Engineering, ICSE 2023, Melbourne Australia
Enterprise Resource Planning System includes various modules that reduce any business's workload. Additionally, it organizes the workflows, which drives towards enhancing productivity. Here are a detailed explanation of the ERP modules. Going through the points will help you understand how the software is changing the work dynamics.
To know more details here: https://blogs.nyggs.com/nyggs/enterprise-resource-planning-erp-system-modules/
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppGoogle
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
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https://sumonreview.com/ai-fusion-buddy-review
AI Fusion Buddy Review: Key Features
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See My Other Reviews Article:
(1) AI Genie Review: https://sumonreview.com/ai-genie-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
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Artificia Intellicence and XPath Extension FunctionsOctavian Nadolu
The purpose of this presentation is to provide an overview of how you can use AI from XSLT, XQuery, Schematron, or XML Refactoring operations, the potential benefits of using AI, and some of the challenges we face.
OpenMetadata Community Meeting - 5th June 2024OpenMetadata
The OpenMetadata Community Meeting was held on June 5th, 2024. In this meeting, we discussed about the data quality capabilities that are integrated with the Incident Manager, providing a complete solution to handle your data observability needs. Watch the end-to-end demo of the data quality features.
* How to run your own data quality framework
* What is the performance impact of running data quality frameworks
* How to run the test cases in your own ETL pipelines
* How the Incident Manager is integrated
* Get notified with alerts when test cases fail
Watch the meeting recording here - https://www.youtube.com/watch?v=UbNOje0kf6E
Why Mobile App Regression Testing is Critical for Sustained Success_ A Detail...kalichargn70th171
A dynamic process unfolds in the intricate realm of software development, dedicated to crafting and sustaining products that effortlessly address user needs. Amidst vital stages like market analysis and requirement assessments, the heart of software development lies in the meticulous creation and upkeep of source code. Code alterations are inherent, challenging code quality, particularly under stringent deadlines.
Software Engineering, Software Consulting, Tech Lead, Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Transaction, Spring MVC, OpenShift Cloud Platform, Kafka, REST, SOAP, LLD & HLD.
Atelier - Innover avec l’IA Générative et les graphes de connaissancesNeo4j
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
Amenez votre ordinateur portable et nous vous guiderons sur la mise en place de votre propre pile d’IA générative, en vous fournissant des exemples pratiques et codés pour démarrer en quelques minutes.
Mobile App Development Company In Noida | Drona InfotechDrona Infotech
Looking for a reliable mobile app development company in Noida? Look no further than Drona Infotech. We specialize in creating customized apps for your business needs.
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Utilocate offers a comprehensive solution for locate ticket management by automating and streamlining the entire process. By integrating with Geospatial Information Systems (GIS), it provides accurate mapping and visualization of utility locations, enhancing decision-making and reducing the risk of errors. The system's advanced data analytics tools help identify trends, predict potential issues, and optimize resource allocation, making the locate ticket management process smarter and more efficient. Additionally, automated ticket management ensures consistency and reduces human error, while real-time notifications keep all relevant personnel informed and ready to respond promptly.
The system's ability to streamline workflows and automate ticket routing significantly reduces the time taken to process each ticket, making the process faster and more efficient. Mobile access allows field technicians to update ticket information on the go, ensuring that the latest information is always available and accelerating the locate process. Overall, Utilocate not only enhances the efficiency and accuracy of locate ticket management but also improves safety by minimizing the risk of utility damage through precise and timely locates.
Essentials of Automations: The Art of Triggers and Actions in FMESafe Software
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
AI Pilot Review: The World’s First Virtual Assistant Marketing SuiteGoogle
AI Pilot Review: The World’s First Virtual Assistant Marketing Suite
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https://sumonreview.com/ai-pilot-review/
AI Pilot Review: Key Features
✅Deploy AI expert bots in Any Niche With Just A Click
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See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
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Crescat is industry-trusted event management software, built by event professionals for event professionals. Founded in 2017, we have three key products tailored for the live event industry.
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E-commerce Application Development Company.pdfHornet Dynamics
Your business can reach new heights with our assistance as we design solutions that are specifically appropriate for your goals and vision. Our eCommerce application solutions can digitally coordinate all retail operations processes to meet the demands of the marketplace while maintaining business continuity.
4. Coding Style - Namespaces
• Huge PHP community = lots of code
• If 2 libraries share same class name = oh oh, troubles…
• Namespaces are similar to “OS directories”,
– 2 files with same name can co-exist in separate
directories
– 2 classes with same name can co-exist in separate
PHP namespaces
6. Coding Style - PSR-X
• PSR = PHP Standards Recommendations
• Coding style followed by most frameworks and latest
libraries.
• Ex PSR-2 https://github.com/php-fig/fig-
standards/blob/master/accepted/PSR-2-coding-style-
guide.md
7. Coding Practices
• DRY code ( Don’t Repeat Yourself)
– Create functions and reuse them whenever you have code very
similar in different parts of your applications
• Use Object Oriented Programming whenever possible
– Create classes to run your business logic (1 class per file if possible)
8. Coding Practices
• Separate template code from business logic
– Your template files should only load and display data, no processing
– Your class files should not start/run themselves and should not directly
display content (your methods can)
10. Security - Input Validation
• Never trust user input
• Always test if an input or variable exist
– isset($variable) = test if variable is not NULL
– empty($array) = test if array is empty
• Then filter that input to make sure you receive what you
expected
– filter_var (for any kind of variables)
– filter_input (for form inputs)
14. Security - SQL Injection
• Use PDO prepare statements (Laravel Eloquent uses it
by default and Wordpress has its own prepare
statements
15. Errors & Exceptions - Errors
• PHP is an “exception-light” programming language.
• Unless a “fatal error” occurs, most of PHP will try to
keep processing
• 3 types of error severity:
• E_ERROR,E_NOTICE, and E_WARNING
16. Errors & Exception - ErrorException Class
• Throw your “errors” as “exceptions” using the ErrorException class, which
extends the Exception class.
• Common practice for several frameworks (Laravel, Symphony, etc.)
• Allow to handle errors better than the usual result by “catching” exceptions
17. Errors & Exceptions - Exceptions
• Exceptions are often overlooked by PHP programmers.
• Some old PHP frameworks returns “false” or “Warning”
when something goes wrong.
– You have to dig in the doc and reread the code to
find what’s wrong
19. You Do
Each of you will apply the techniques we learned
today to optimize/secure/clean your previous
projects.
Make sure to version your previous code before making
any changes so I can see the progression
Your agenda should reflect your learning progression.
the PHP community has a lot of developers creating lots of code. This means that one library’s PHP code may use the same class name as another library. When both libraries are used in the same namespace, they collide and cause trouble.
Namespaces solve this problem. As described in the PHP reference manual, namespaces may be compared to operating system directories that namespace files; two files with the same name may co-exist in separate directories. Likewise, two PHP classes with the same name may co-exist in separate PHP namespaces. It’s as simple as that.
It is important for you to namespace your code so that it may be used by other developers without fear of colliding with other libraries.
The PHP community is large and diverse, composed of innumerable libraries, frameworks, and components. It is common for PHP developers to choose several of these and combine them into a single project. It is important that PHP code adhere (as close as possible) to a common code style to make it easy for developers to mix and match various libraries for their projects.
The Framework Interop Group has proposed and approved a series of style recommendations. Not all of them related to code-style, but those that do are PSR-0,PSR-1, PSR-2 and PSR-4. These recommendations are merely a set of rules that some projects like Drupal, Zend, Symfony, CakePHP, phpBB, AWS SDK, FuelPHP, Lithium, etc are starting to adopt. You can use them for your own projects, or continue to use your own personal style.
Ideally you should write PHP code that adheres to a known standard. This could be any combination of PSR’s, or one of the coding standards made by PEAR or Zend. This means other developers can easily read and work with your code, and applications that implement the components can have consistency even when working with lots of third-party code.
Never ever (ever) trust foreign input introduced to your PHP code. Always sanitize and validate foreign input before using it in code. The filter_var() andfilter_input() functions can sanitize text and validate text formats (e.g. email addresses).
Foreign input can be anything: $_GET and $_POST form input data, some values in the$_SERVER superglobal, and the HTTP request body via fopen('php://input', 'r'). Remember, foreign input is not limited to form data submitted by the user. Uploaded and downloaded files, session values, cookie data, and data from third-party web services are foreign input, too.
While foreign data can be stored, combined, and accessed later, it is still foreign input. Every time you process, output, concatenate, or include data in your code, ask yourself if the data is filtered properly and can it be trusted.
Input validation is both the most fundamental defense that a web application relies upon and the most unreliable. A significant majority of web application vulnerabilities arise from a validation failure, so getting this part of our defenses right is essential. Even where we do appear to have gotten it down, we’ll need to be concious of the following considerations.
Input validation is both the most fundamental defense that a web application relies upon and the most unreliable. A significant majority of web application vulnerabilities arise from a validation failure, so getting this part of our defenses right is essential. Even where we do appear to have gotten it down, we’ll need to be concious of the following considerations.
By far the most common form of Injection Attack is the infamous SQL Injection attack. SQL Injections are not only extremely common but also very deadly. I cannot emphasise enough the importance of understanding this attack, the conditions under which it can be successfully accomplished and the steps required to defend against it.
SQL Injections operate by injecting data into a web appplication which is then used in SQL queries. The data usually comes from untrusted input such as a web form. However, it’s also possible that the data comes from another source including the database itself. Programmers will often trust data from their own database believing it to be completely safe without realising that being safe for one particular usage does not mean it is safe for all other subsequent usages. Data from a database should be treated as untrusted unless proven otherwise, e.g. through validation processes.
---------------------
The above has a number of things wrong with it. First of all, we haven’t validated the contents of the POST data to ensure it is a valid user_id. Secondly, we are allowing an untrusted source to tell us which user_id to use - an attacker could set any valid user_id they wanted to. Perhaps the user_id was contained in a hidden form field that we believed safe because the web form would not let it be edited (forgetting that attackers can submit anything). Thirdly, we have not escaped the user_id or passed it to the query as a bound parameter which also allows the attacker to inject arbitrary strings that can manipulate the SQL query given we failed to validate it in the first place.
By far the most common form of Injection Attack is the infamous SQL Injection attack. SQL Injections are not only extremely common but also very deadly. I cannot emphasise enough the importance of understanding this attack, the conditions under which it can be successfully accomplished and the steps required to defend against it.
SQL Injections operate by injecting data into a web appplication which is then used in SQL queries. The data usually comes from untrusted input such as a web form. However, it’s also possible that the data comes from another source including the database itself. Programmers will often trust data from their own database believing it to be completely safe without realising that being safe for one particular usage does not mean it is safe for all other subsequent usages. Data from a database should be treated as untrusted unless proven otherwise, e.g. through validation processes.
---------------------
The above has a number of things wrong with it. First of all, we haven’t validated the contents of the POST data to ensure it is a valid user_id. Secondly, we are allowing an untrusted source to tell us which user_id to use - an attacker could set any valid user_id they wanted to. Perhaps the user_id was contained in a hidden form field that we believed safe because the web form would not let it be edited (forgetting that attackers can submit anything). Thirdly, we have not escaped the user_id or passed it to the query as a bound parameter which also allows the attacker to inject arbitrary strings that can manipulate the SQL query given we failed to validate it in the first place.
In many “exception-heavy” programming languages, whenever anything goes wrong an exception will be thrown. This is certainly a viable way to do things, but PHP is an “exception-light” programming language. While it does have exceptions and more of the core is starting to use them when working with objects, most of PHP itself will try to keep processing regardless of what happens, unless a fatal error occurs.
Errors are fatal run-time errors and are usually caused by faults in your code and need to be fixed as they’ll cause PHP to stop executing. Notices are advisory messages caused by code that may or may not cause problems during the execution of the script, execution is not halted. Warnings are non-fatal errors, execution of the script will not be halted.
PHP is perfectly capable of being an “exception-heavy” programming language, and only requires a few lines of code to make the switch. Basically you can throw your “errors” as “exceptions” using the ErrorException class, which extends theException class.
This is a common practice implemented by a large number of modern frameworks such as Symfony and Laravel. By default Laravel will display all errors as exceptions using the Whoops! package if the app.debug switch is turned on, then hide them if the switch is turned off.
By throwing errors as exceptions in development you can handle them better than the usual result, and if you see an exception during development you can wrap it in a catch statement with specific instructions on how to handle the situation. Each exception you catch instantly makes your application that little bit more robust.
Exceptions are a standard part of most popular programming languages, but they are often overlooked by PHP programmers. Languages like Ruby are extremely Exception heavy, so whenever something goes wrong such as a HTTP request failing, or a DB query goes wrong, or even if an image asset could not be found, Ruby (or the gems being used) will throw an exception to the screen meaning you instantly know there is a mistake.
PHP itself is fairly lax with this, and a call to file_get_contents() will usually just get you a FALSE and a warning. Many older PHP frameworks like CodeIgniter will just return a false, log a message to their proprietary logs and maybe let you use a method like $this->upload->get_error() to see what went wrong. The problem here is that you have to go looking for a mistake and check the docs to see what the error method is for this class, instead of having it made extremely obvious.
Another problem is when classes automatically throw an error to the screen and exit the process. When you do this you stop another developer from being able to dynamically handle that error. Exceptions should be thrown to make a developer aware of an error; they then can choose how to handle this. E.g.: