Articles

HTTP-Based OOP, Inheritance, and Polymorphism

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This might sound like a joke, but it’s actually not. First, let’s define inheritance. Inheritance is the ability to use polymorphism to override a method with another implementation. You inherit from a class, and you override one of its virtual functions. This results in that code having an object that will no longer invoke the old base class method, but rather the new overridden method. Kind of easy, right?

Polymorphism Is the Ability To Have Old Code Invoke New Code

Well, there’s nothing intrinsically special about class-based OOP that prevents you from implementing the above in a functional context. In a functional programming language, you can have a reference to a function, and replace the function it’s pointing to, before passing in your function reference to some method in need of a function with the specified signature. This achieves the exact same result as « classic polymorphism. »

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Different Test Scopes in Rust

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I’m still working on learning Rust. Beyond syntax, learning a language requires familiarizing oneself with its idioms and ecosystem. I’m at a point where I want to explore testing in Rust.

The Initial Problem

We have used Dependency Injection a lot – for ages on the JVM. Even if you’re not using a framework, Dependency Injection helps decouple components. Here’s a basic example:

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Golang vs. Python: Which Is Better?

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Do you want to learn how to code but are a beginner?

Which programming language should you start learning first? The languages that developers employ the most are those that are quick, simple to learn, and in-demand.

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How to Use MQTT in PHP

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PHP is a widely-used open-source multi-purpose scripting language, which can be embedded in HTML and is especially suitable for Web development.

This article mainly introduces how to use the php-mqtt/client client library in PHP projects to implement the functions of connection, subscription, unsubscribing, message receiving and sending between MQTT client and MQTT server.

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Getting Started With Robotic Process Automation

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Technologies such as artificial intelligence (AI), machine learning (ML), and natural language processing (NLP) have led the way to software robots that reduce the manual, time-consuming, and repetitive actions performed on digital platforms. The concept of automating tasks on digital platforms is called robotic process automation (RPA). RPA is a software robot that interacts with computer-centric processes and aims to introduce a digital workforce that performs repetitive tasks previously completed by humans. This Refcard introduces RPA technology, how it works, key components, and how to set up your environment.
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Java and Low Latency

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I have lost count of the number of times I have been told that Java is not a suitable language in which to develop applications where performance is a major consideration. My first response is usually to ask for clarification on what is actually meant by “performance” as two of the most common measures – throughput and latency, sometimes conflict with each other, and approaches to optimise for one may have a detrimental effect on the other. 

Techniques exist for developing Java applications that match, or even exceed, the performance requirements of applications that have been built using languages more traditionally used for this purpose. However, even this may not be enough to get the best performance from a latency perspective. Java applications still have to rely on the Operating System to provide access to the underlying hardware. Typically latency-sensitive (often called “Real Time”) applications operate best when there is almost direct access to the underlying hardware, and the same applies to Java. In this article, we will introduce some approaches that can be taken when we want to have our applications utilise system resources most effectively. 

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Explaining Performance to Non-technical Stakeholders

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Whether you’re an e-commerce company, a SaaS provider, or a content publisher, understanding the performance of your website is important to everyone on the team—not just the developers. Performance is a huge part of the user experience and is directly tied to how well your website achieves its goals. But web performance is often measured in very technical terms, like Largest Contentful Paint, that cause most business folk’s eyes to glaze over.

This language gap is a big part of the reason why many websites are so slow. Many only consider performance from their own perspective—“it’s fast for me”—and leave it at that. We simply lack the vocabulary to talk about the problem.

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Compliance Automated Standard Solution (COMPASS), Part 2: Trestle SDK

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In part 1 of this multi-part blog series on continuous compliance, we detailed the personas and their role in the compliance processes. We concluded that the key to achieving compliance automation and hence continuous compliance is the compliance artifacts programmatic representation, as code, expressed in generic and standard security language terms.

In this blog post, we introduce Trestle, our open-source implementation of the NIST Open Security Control Assessment Language (OSCAL) standard framework adopted as a workflow automation of compliance artifacts managed as compliance as code. Trestle enables those diverse personas to collaboratively author the compliance artifacts and offers a platform and OSCAL SDK for teams to automate their specific native processes and formats. Trestle implicitly provides a core opinionated workflow driven by its pipeline to allow standardized interlocks with other compliance tooling platforms.

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Exciting New Features in Safari 16

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Apple has released an OS update. Packaged in with it is the latest version of Safari, 16.

Expected to be released ahead of next month’s macOS 13, Safari 16 is packed with updates, making it one of the most capable browsers available.

For web designers, the significance is the forward momentum in web technologies that enable freer design work and fewer hacks to achieve complex layouts. Little by little, CSS recommendations are being implemented to the point that using JavaScript for layout is rapidly becoming as unnecessary as it is disliked.

Some of this was announced in June in the Safari 16 beta. But a lot has been added in the last couple of months. So here’s what’s new in Safari 16 today.

CSS Container Queries

The most exciting addition to Safari 16 is CSS Container Queries.

It is hard to understate how in-demand this feature has been; if you imagine an edit button on Twitter that gifted you crypto every time you corrected a typo, you’d be getting close to how popular this feature is.

Until now, media queries have detected the whole viewport. And so, if you have an element like a card, for example, that needs to change at smaller viewports, you need to calculate the available space and adapt the element’s design accordingly. Unfortunately, this frequently gets out of sync with edge cases causing more than a few headaches for front-end developers.

Media queries are severely restrictive to modern layout methods like Grid that wrap elements automatically because there is no way to detect how the elements are laid out.

Container Queries solve this by allowing you to define styles based on the size of the actual containing element; if a div is 300px wide, the contents can have one design, and if it’s 400px wide, they can have a different design—all without caring what size the whole viewport is.

This is dangerously close to OOP (Object Orientated Programming) principles and almost elevates CSS to an actual programming language. (All we need is conditional logic, and we’re there.)

The latest versions of Chrome, Edge, and now Safari (including mobile) support CSS Grid. Even discounting the rapid decline of Twitter, this is way more exciting than any edit button.

CSS Subgrid

Speaking of Grid, if you’ve built a site with it (and if you haven’t, where have you been?), you’ll know that matching elements in complex HTML structures often results in nesting grids. Matching those grids requires careful management, CSS variables, or both. With CSS Subgrid, grids can inherit grid definitions from a grid defined higher up the hierarchy.

CSS Subgrid has been supported by Firefox for a while but is not yet part of Chrome or Edge. Until there’s wider support, it’s not a practical solution, and using a fallback negates any benefit of using Subgrid. However, its introduction in Safari will surely herald rapid adoption by Google and Microsoft and moves the web forward considerably.

CSS Subgrid is likely to be a practical solution within 18 months.

AVIF Support

AVIF is an exceptionally compact image format that beats even WebP in many instances. It even allows for sequences, creating what is essentially an animated GIF but smaller, and for bitmaps.

AVIF is already supported by Chrome, with partial support in Firefox. Safari now joins them.

AVIF support is one of the more valuable additions to Safari 16 because you’re probably already serving different images inside a picture element. If so, your Safari 16 users will begin receiving a smaller payload automatically, speeding up your site and boosting UX and SEO.

Enhanced Animation

Safari 16 introduces some significant improvements in animation, but the one that catches the eye is that you can now animate CSS Grid.

Yes, let that sink in. Combine Container Queries and animation. The possibilities for hover states on elements are tantalizing.

Safari 16 also supports CSS Offset Path — known initially as CSS Motion Path — which allows you to animate elements along any defined path. This enables the kind of animated effect that previously needed JavaScript (or Flash!) to accomplish.

Chrome, Edge, and Firefox all support CSS Offset Path; the addition of Safari means it’s now a practical solution that can be deployed in the wild.

Web Inspector Extensions

Announced as part of the beta release, Web Inspector Extensions allow web developers to create extensions for Safari, just as they would for Chrome.

Web Inspector Extensions — or Safari Extensions as they’re destined to be known — can be built in HTML, CSS, and JS, so the learning curve is shallow. It’s a good route into app development for web designers.

Because the underlying technology is the same as other browser extensions, anyone who has made a Chrome, Edge, or Firefox extension will be able to port it to Safari 16+ relatively easily. As a result, there should be a rapid expansion of the available extensions.

Improved Accessibility

Accessibility is key to an effective and inclusive web. Be like Bosch: everybody counts, or nobody counts.

When testing a design for accessibility, emulators don’t cut it. In my experience, Safari has some of the most reliable accessibility settings, especially when it comes to Media Queries like prefers-reduced-movement.

Further gains in this field mean that Safari continues to be an essential tool for QA tests.

Reduced Resets

Finally, I want to throw up my hands to celebrate the reduced number of non-standard CSS appearance settings.

For years we’ve been prefacing our style sheets with elaborate resets like Normalize, designed to undo all the assumptions browser developers make about design and the UI preferences of their engineers.

Safari 16 has reportedly “Removed most non-standard CSS appearance values.” How effective this is and how much we can rely on it given the other browsers on the market remains to be seen. However, like many of Safari 16’s changes, it’s a step towards a browser that’s on the developers’ side instead of an obstacle to overcome.

Source

The post Exciting New Features in Safari 16 first appeared on Webdesigner Depot.

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