programming – Devstyler.io https://devstyler.io News for developers from tech to lifestyle Thu, 26 Feb 2026 10:33:02 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.5 Vibe Coding: The Dos and Don’ts of Building Software in the Flow Era https://devstyler.io/blog/2026/02/03/vibe-coding-the-dos-and-don-ts-of-building-software-in-the-flow-era/ Tue, 03 Feb 2026 13:48:23 +0000 https://devstyler.io/?p=133456 ...]]> Software development is undergoing a subtle but powerful shift. Beyond frameworks, languages, and tools, a new mindset is taking hold—vibe coding. It’s not about abandoning discipline or best practices. It’s about coding in a state of flow, using intuition, creativity, and increasingly, AI copilots to move fast and stay inspired.

But like any emerging practice, vibe coding has its sweet spots—and its traps. Here’s a clear-eyed guide to the dos and don’ts of vibe coding, for developers who want speed and substance.

What Is Vibe Coding?

Vibe coding is a style of development driven by momentum and intuition. Instead of rigid upfront planning, developers rely on rapid feedback loops, conversational AI tools, and a strong sense of direction to “feel” their way through a solution.

It thrives in:

  • Prototyping and MVPs
  • Hackathons and side projects
  • Early-stage product exploration
  • Creative problem-solving sessions

But vibe coding isn’t an excuse for chaos. The difference between magic and mess comes down to how you practice it.

The Dos of Vibe Coding

Do Use Vibe Coding for Exploration

Vibe coding shines when the problem space is fuzzy. Let yourself experiment, generate ideas quickly, and test assumptions without overthinking architecture too early.

Think:

What if we try this?

instead of

What’s the perfect solution?

Do Lean on AI, But Stay in Control

AI copilots are core to modern vibe coding. They help you scaffold, refactor, and brainstorm at speed. The key is intentional prompting and active review.

You’re still the architect. AI is your amplifier, not your replacement.

Do Protect the Flow State

Minimize friction:

  • Reduce context switching
  • Avoid premature optimization
  • Keep feedback loops tight

When you’re in the zone, velocity compounds. Vibe coding works best when interruption is the exception, not the norm.

Do Refactor After the Vibe

Messy first drafts are fine—as long as you clean them up. Schedule time to:

  • Rename variables
  • Improve structure
  • Add comments and tests

Vibe coding is phase one. Professional coding is phase two.

Do Communicate the “Why”

If you’re working on a team, document intent. Vibe-driven decisions can look arbitrary to others unless you explain the reasoning behind them.

A short README or commit message can save hours of confusion later.

The Don’ts of Vibe Coding

Don’t Skip Fundamentals

Vibe coding doesn’t override:

  • Security best practices
  • Performance considerations
  • Data integrity
  • Accessibility

If you don’t understand what the code is doing, you’re not vibe coding—you’re gambling.

Don’t Ship Vibes to Production

Production systems need reliability, observability, and maintainability. Pure vibe code without review, testing, and structure becomes technical debt—fast.

Rule of thumb:
If users depend on it, it deserves rigor.

Don’t Confuse Speed with Progress

Writing a lot of code quickly feels productive—but velocity without direction is just motion.

Pause occasionally and ask:

  • Are we solving the right problem?
  • Is this still aligned with the goal?

Don’t Ignore Your Future Self

Vibe coding today shouldn’t punish you tomorrow. If the code will live longer than a weekend, invest at least minimal effort in clarity.

Future-you is a teammate. Treat them well.

Don’t Assume Vibe Coding Is for Everyone

Some developers thrive in structured environments. Others flourish in creative flow. High-performing teams respect both styles and apply them deliberately.

Vibe coding is a tool—not a mandate.

Vibe first. Validate fast. Engineer responsibly.

Material by Iva Abadjievа

Image: AI generated, Deep Infra

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Top 12 AI Coding Platforms Every Software Developer Should Know https://devstyler.io/blog/2026/01/21/top-12-ai-coding-platforms-every-software-developer-should-know/ Wed, 21 Jan 2026 15:55:42 +0000 https://devstyler.io/?p=132887 ...]]> AI coding platforms now support the entire software lifecycle — from learning and prototyping to maintaining enterprise-scale systems and automating full development tasks. Below is the complete and revised workflow-oriented guide, with clear explanations, Best for, and Strength sections for developers encountering these tools for the first time.

1. GitHub Copilot

GitHub Copilot works as an AI pair programmer embedded directly in your IDE. It suggests code in real time, generates functions from comments, and adapts to your coding style as you work. For many developers, it quickly becomes part of their daily workflow.

Best for: Everyday coding and autocomplete
Strength: Seamless IDE integration and broad language support

Pricing: Available as a paid subscription for individuals and teams, with discounted or free access for verified students and open-source maintainers. Enterprise pricing is offered through GitHub Enterprise plans.

  • Individuals: from ~$10/month
  • Business & Enterprise: from ~$19–$39/user/month
  • Free for verified students and open-source maintainers

2. ChatGPT

ChatGPT is a conversational AI widely used by developers to generate code, debug issues, and reason through design decisions. It is not tied to a specific IDE, making it flexible across languages, frameworks, and platforms. Developers often rely on it as a thinking partner.

Best for: Debugging, explanations, and system design
Strength: Strong reasoning and versatility

Pricing: Offers a free tier with usage limits, alongside paid plans that provide access to more advanced models, higher usage caps, and faster responses. Team and enterprise plans are available for organizations.

  • Free tier: $0 (usage limits apply)
  • Plus plan: ~$20/month
  • Team & Enterprise: custom pricing (typically $25+ per user/month)

3. Amazon CodeWhisperer

Amazon CodeWhisperer is optimized for cloud development, especially within the AWS ecosystem. It generates code aligned with AWS services and highlights potential security vulnerabilities. This makes it well suited for production-focused teams.

Best for: AWS and cloud-native development
Strength: Security-aware suggestions and AWS expertise

Pricing: Includes a free individual tier for basic usage, with paid professional and enterprise options offering enhanced security scanning and administrative controls.

  • Individual tier: Free
  • Professional: from ~$19/user/month
  • Enterprise: custom AWS pricing

4. Tabnine

Tabnine provides AI-driven code completion with a strong focus on privacy. It supports local and private deployments, ensuring sensitive code never leaves controlled environments. This makes it a popular choice for enterprise and regulated teams.

Best for: Privacy-sensitive and enterprise environments
Strength: On-premise and private model support

Pricing: Offers a free tier with basic completion, plus paid Pro and Enterprise plans that unlock advanced models, team features, and private deployment options.

  • $59/user/month (annual subscription)

5. Replit

Replit is a browser-based development environment that removes the need for local setup. Its AI features assist with coding, debugging, and collaboration in real time. Replit is widely used for learning, hackathons, and fast prototyping.

Best for: Learning, prototyping, and collaboration
Strength: Zero-setup, cloud-based workflow

Pricing: Provides a free tier with limited resources, while paid plans unlock more compute, private projects, and enhanced AI capabilities. Team and education plans are also available.

  • Free tier: $0
  • Replit Core: $20/month
  • Teams: $40/user/month
  • Enterprise: custom pricing

6. Cursor

Cursor is an AI-first code editor built around natural language interaction. Developers can ask questions about their entire codebase, refactor multiple files at once, and generate features using prompts. AI is central to the editor, not an add-on.

Best for: AI-native coding workflows
Strength: Deep codebase awareness and refactoring

Pricing: Typically offered via a subscription model, with a limited free trial and paid plans that increase usage limits and unlock advanced AI features.

  • Hobby: $0/month
  • Pro: $20/month
  • Pro+: $60/month
  • Ultra: $200/month

7. Sourcegraph Cody

Cody is designed to understand large and complex repositories. It helps developers search, explain, and modify code across massive codebases. This makes it particularly valuable for enterprise teams working with long-lived systems.

Best for: Large-scale and legacy codebases
Strength: Context-aware code intelligence

Pricing: Includes a free tier for individual developers, with paid Team and Enterprise plans that support larger codebases, self-hosting, and advanced integrations.

  • $49/user/month

8. Windsurf

Windsurf offers fast AI-powered autocomplete and chat features across many IDEs. It is designed to be lightweight and easy to adopt without disrupting existing workflows. Many developers use it as a simple, high-performance alternative to heavier tools.

Best for: Fast autocomplete and low-friction adoption
Strength: Speed and broad IDE support

Pricing: Free for individual developers, with paid team and enterprise plans offering collaboration features, analytics, and administrative controls.

  • Individual developers: Free
  • Pro: $15/user/month
  • Team: $30/user/month
  • Enterprise: custom pricing

9. JetBrains AI Assistant

JetBrains AI Assistant is integrated directly into IDEs like IntelliJ IDEA, PyCharm, and WebStorm. It enhances code completion, refactoring, and documentation while leveraging JetBrains’ deep language analysis. The experience feels native and cohesive.

Best for: Developers using JetBrains IDEs
Strength: Native IDE experience and language intelligence

Pricing: Available as an add-on subscription, with some access bundled into select JetBrains plans. Pricing varies by individual, team, and organizational licenses.

  • Add-on subscription: from ~$10/month
  • Bundled access in select JetBrains plans
  • Team & Enterprise licenses available

10. IBM watsonx Code Assistant

IBM watsonx Code Assistant focuses on enterprise software modernization. It helps teams document, refactor, and transform legacy systems while meeting governance and compliance requirements. The platform is designed for stability and long-term maintainability.

Best for: Enterprises and regulated industries
Strength: Governance, compliance, and legacy modernization

Pricing: Offered primarily through enterprise contracts, with pricing based on deployment size, use case, and compliance requirements rather than individual subscriptions.

  • Essentials: Starting at approximately $2 per 20 task prompts.
  • Standard: Starting at $3,000 per month
  • On-premises: Upon request

11. Devin

Devin represents a new class of autonomous AI software engineers. It can plan tasks, write and debug code, run tests, and deploy applications independently. Rather than assisting line by line, Devin takes ownership of entire development tasks.

Best for: End-to-end task automation
Strength: Autonomous, multi-step execution

Pricing: Currently positioned as a premium product, typically available through limited access or enterprise-style pricing rather than open individual subscriptions.

  • Core – $20/user/month
  • Team – $500/month
  • Enterprise – custom pricing

12. Claude

Claude is a reasoning-focused AI known for handling long and complex codebases. Developers use it to analyze unfamiliar systems, perform careful refactors, and generate clear documentation. Its cautious, structured approach makes it well suited for maintainable code.

Best for: Code understanding and refactoring
Strength: Long-context reasoning and clarity

Pricing: Offers free access with usage limits, alongside paid plans that provide higher limits, more advanced models, and team or enterprise options.

  • Free tier: $0 (usage limits)
  • Pro plan: from ~$20/month
  • Max: from $100/person/month

Material by Iva Abadjievа

Image: Freepik

Images: GitHub Copilot; ChatGPT; Amazon CodeWhisperer; Tabnine; Replit; Cursor; Sourcegraph Cody; Windsurf; JetBrains AI Assistant; IBM watsonx Code Assistant; Devin; Claude

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Being a Java programmer in 2025: new realities and challenges https://devstyler.io/blog/2025/11/21/being-a-java-programmer-in-2025-new-realities-and-challenges/ Fri, 21 Nov 2025 09:48:06 +0000 https://devstyler.io/?p=131982 ...]]> Alexander Mihaylov has been working as a software engineer at Paysafe for 5 years. He graduated in Information Technology in the Netherlands, then did an internship and started working in Bulgaria. He has worked for several Bulgarian companies. He spends his free time with his family, traveling, and in the winter, he spends most of his days off skiing.

Why did you choose Java and its ecosystem?

I wasn’t particularly enthusiastic about Java at university, but my professional path led me to it in a very logical way. I started with data science and BI, then at Paysafe I mainly worked with Oracle and PL/SQL.

Gradually, while working on real projects, I began to get into Java through smaller tasks. I liked the structure, the capabilities of the language, and the strong ecosystem, especially in the context of large payment systems.

Over time, Java proved to be a natural extension of what I was doing. It provided stability, a rich ecosystem, strong tooling, and excellent integration with the architecture and SDKs we use at Paysafe. I moved from small tasks to more complex initiatives, and at one point I simply found myself in a role where Java was my main tool, and it was completely conscious and logical.

How has your work as a Java programmer changed in recent years?

My work as a Java engineer has changed significantly in recent years.

The language and ecosystem are evolving rapidly, which has reduced boilerplate code and increased productivity, making work more enjoyable.

Also, almost everything is now cloud-based. Technologies such as AWS bring enormous advantages, but this also means that programmers now need to be much more familiar with cloud architecture rather than focusing purely on their code.

The pace of work is also more dynamic. Releases are more frequent and require constant learning and adaptation.

The biggest change is the advent of AI, which I use as a tool for discussing ideas and speeding up routine tasks, but not for critical implementations. It is a valuable assistant, but it requires a careful and responsible approach.

Which new technologies or versions of Java do you think will have the greatest impact in 2025?

Over the past 10 years or so, the Java ecosystem has undergone continuous improvements. This applies to the language itself, as well as to the JVM and accompanying Java tools.

In my opinion, the technology that has had and will continue to have the greatest impact is undoubtedly Project Loom.

For me, this is a revolution in Java—virtual threads enable huge improvements in system performance and scalability without the need for particularly complex changes to the existing code or additional infrastructure resources.

Added to this are Structured Concurrency and Scoped Values, which further improve Java’s concurrency model and lead to more efficient management of parallel tasks.

At the same time, developments in the JVM and improvements in garbage collection make the ecosystem faster, lighter, and better optimized for cloud environments, a factor that is key for modern platforms and microservice architectures.

To what extent can Java adapt to cloud environments, microservices, and containerization (Docker, Kubernetes)?

I think Java is quite successful in adapting to industry requirements, mainly due to the development of the JVM itself, as well as frameworks such as Spring.

For example, effective management of hardware resources such as memory and CPU, due to the fact that the JVM is “resource-aware” to the container in which the application is deployed.

At the same time, modern Garbage Collection algorithms reduce overhead and make applications more stable and economical in cloud infrastructure.

The Spring Boot + Spring Cloud stack itself is the de facto standard in application development, specifically microservices in cloud environments.

It provides tools for service discovery, load balancing, centralized configuration, and much more.

This enables the Java ecosystem to create standalone, lightweight, fast-starting, fast, and easily scalable applications.

In my opinion, Java is not just adapting, but rather setting the standard in the industry.

What is the role of the open-source community and how does it support the development of Java?

The open-source community is perhaps one of the biggest forces behind the popularity and development of the ecosystem.

The OpenJDK project allows many companies and individual engineers to contribute improvements to the language, JVM, and tooling, which accelerates innovation and eliminates the risk of dependence on a single vendor. Without this model, the evolution of Java would be significantly slower and probably more expensive.

Open JDK allows everyone to have their own distribution, which they control without relying on a single vendor, and to use it according to their needs.

Many of today’s technologies in the ecosystem are due to it: Spring, Maven, Gradle, and many others arose precisely because the community had to solve a practical problem. Imagine dependency management without Maven/Gradle.

Every programmer can also challenge themselves and try to improve their skills by reviewing or even trying to contribute to an open source project.

I personally haven’t gotten there yet, but maybe in the future.

In short, I think that much of Java’s progress is due precisely to the active, strong, and innovative open-source culture behind it.

How do you keep your knowledge up to date in such a dynamic environment?

I try to keep my knowledge up to date by regularly reading articles, documentation, and technical blogs when time allows. Although I don’t always manage to pay attention to all the books and materials, I try to keep up with key developments in the ecosystem.

The team environment also plays a big role: conversations with colleagues, code reviews, and working on common tasks often reveal new approaches and technologies.

In my opinion, learning from other engineers is one of the most valuable things, regardless of position. The possibilities of the language are endless, and there is always something new to learn.

Here, I need to give a shoutout to one of my colleagues, Stefan Ivanov, who also works at Paysafe. He was the one who opened my eyes to virtual threads, which I had overlooked. Exactly one month later, I was already using them.

Do you think Java will remain one of the leading languages, and why?

I am convinced that Java will remain among the leading languages for many years to come. A huge part of global software—corporate systems, critical infrastructure, and government applications—is built on Java, and such a foundation cannot be replaced easily or quickly.

In practice, there is no other language that has proven itself and can consistently do a better job.

When we add the continuous innovations in the language and the JVM, as well as the strong open-source community, Java not only maintains its position but continues to evolve and become more accessible and attractive to new engineers.

The material and image are provided by Paysafe

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Inside Look: How Paysafe Engineers Think and Work https://devstyler.io/blog/2025/08/06/inside-look-how-paysafe-engineers-think-and-work/ Wed, 06 Aug 2025 12:16:13 +0000 https://devstyler.io/?p=130378 ...]]> In this quick interview, we meet three software engineers from Paysafe—with different career paths and levels of experience. Each of them answers the same five questions, selected to reveal their way of thinking, priorities, and approach to the profession.

Konstantin Drenski, Senior Software Engineer

Konstantin has been a senior software engineer at Paysafe since 2021. In addition to the financial industry, his professional career to date includes experience on several large software projects in the telecommunications and energy sectors. In his free time, he enjoys sports, traveling, and experimenting with new technologies.


Alexander Petrov, Software Engineer

Alexander is a software engineer with 5 years of experience in Java, Spring Boot, and microservices architecture. Outside of work, he has a strong interest in electric vehicle platforms and battery technology. He often applies his engineering mindset to his hobbies, whether it’s home automation, energy efficiency, or smart solutions for everyday life.


Stoyan Stoyanov, Junior Software Engineer

Stoyan has been a Software Engineer at Paysafe since 2024. He holds an engineering degree in mechanical engineering and transitioned into the field of software engineering about four years ago. In his free time, he enjoys spending time with his family and actively engaging in various sports activities.


 

 

What do you like most about your job as a software engineer?

Konstantin: What I like most is the opportunity to solve complex problems through technology and create solutions that have a real impact.

Alexander: I like that I can create something useful, from an idea to a real working product. I feel satisfied when I see how the solution I have worked on makes others’ work easier or contributes to a better experience for end users. In addition, my profession constantly challenges me – there is always something new to learn and improve upon.

Stoyan: I like the fact that by writing code, we actually solve problems and create value. The work combines logic and creativity, and the greatest satisfaction comes when I see something I’ve worked on being used in real life—especially on a large scale, as I’ve seen with my previous employers and now at Paysafe. Technology is constantly changing, which keeps me curious and engaged – it’s never boring.

When you encounter a technical challenge, how do you approach solving it?

Konstantin: When I encounter a technical challenge, I first analyze it thoroughly, break it down into smaller parts, and systematically seek a solution through research, testing, and collaboration with the team.

Alexander: First, I try to really understand the problem– what exactly is not working and why. Then I develop a clear plan of action – step by step. If necessary, I look for information, consult with colleagues, or try out different options. I believe that with patience, logic, and good communication, every challenge has a solution.

Stoyan: I usually start by understanding the full context – not just what’s broken, but why, and what should be happening. I break the problem down into smaller steps and look for confirmation through logs, tests, or observing the behavior of the system. If I’m stuck, I don’t hesitate to ask a colleague for advice. My work so far has taught me that asking the right question at the right time saves a lot of time and effort.

What is the most important lesson you have learned so far in your career?

Konstantin: The most important lesson I have learned so far in my career is that effective communication and collaboration are as key to success as technical skills.

Alexander: My most important lesson so far is that at work, especially in a team, it is not only important to find a solution, but also how you present and communicate it. A good software engineer is not someone who knows everything, but someone who knows how to work effectively with others, share knowledge, and create clarity, not confusion.

Stoyan: I have learned that communication is just as important as writing good code. There have been cases where better coordination would have saved hours of debugging. Another important lesson is that good planning and design at the beginning can save a lot of headaches in the end – something I have also seen in larger projects in a corporate environment.

How do you maintain and develop your skills in the dynamic world of technology?

Konstantin: I maintain and develop my skills through continuous learning. I follow new technologies, participate in online courses, read specialized literature, and engage in practical projects that challenge me to step outside my comfort zone.

Alexander: I try to regularly find time for learning, sometimes through online courses, sometimes through real projects, or by setting myself new challenges. I keep track of what is changing in our field, I like to experiment and ask myself the question: “Can this be done better?” For me, development is a continuous process.

Stoyan: To be honest, my free time doesn’t always allow me to keep up with everything new, so I try to get involved in a variety of tasks and projects at work that allow me to learn new technologies. This way, I learn practically – “on the go,” through real problems. This helps me develop naturally, without losing touch with the real context.

What do you think makes a team of software engineers successful?

Konstantin: In my opinion, a successful team of software engineers is built on open communication, mutual trust, clearly defined roles, and shared responsibility for the end result.

Alexander: A successful team is built on trust, respect, and open communication. Everyone should feel free to share ideas and concerns. When people help each other, learn from each other, and work together toward a common goal, the results are really good. And last but not least, a good mood in the team is always reflected in the quality of the work.

Stoyan: Clear communication and a culture of mutual trust are the foundation. In a strong team, people help each other, are not afraid to share uncertainties, and give each other feedback. In my opinion, teams are most effective when everyone is clear about how they contribute, but is also open to getting involved in things outside their comfort zone if necessary. I have seen this in practice – good teams are immediately recognizable by the way they communicate and take responsibility.

The material and images are provided by Paysafe

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What Every Senior Front-End Developer Should Know About Advanced TypeScript Concepts https://devstyler.io/blog/2025/04/19/what-every-senior-front-end-developer-should-know-about-advanced-typescript-concepts/ Sat, 19 Apr 2025 11:25:52 +0000 https://devstyler.io/?p=128268 ...]]> TypeScript, a robust superset of JavaScript, adds static typing and advanced features that elevate the development experience.

While many developers have mastered the basics, senior developers should be well-versed in advanced TypeScript concepts to write more maintainable, scalable, and efficient code.

Below are seven advanced TypeScript concepts that every senior front-end developer should understand.

What Every Senior Front-End Developer Should Know About Advanced TypeScript Concepts

1. Union Types

Union types enable a variable to hold one of several specified types, providing the flexibility of dynamic data handling while preserving type safety. It’s akin to having a multi-functional tool that fits diverse scenarios.

Example:

More Real-World Example:

2. Intersection Types

Intersection types combine properties from multiple types, ensuring that a variable satisfies all the conditions. It’s a way to merge the identity of different entities, useful for designing more complex types.

Example:

In this scenario, a SuperAdmin type ensures that a user has both User and Admin properties.

3. Type Guards

Type guards act as validation checkpoints within code, allowing for safer type narrowing during runtime checks. These are like checkpoints that only let specific types through, enhancing security and accuracy.

Example:

4. Conditional Types

Conditional types provide powerful type transformations based on certain conditions. They enable dynamic type manipulation, similar to how logic gates control paths in circuits.

Example:

Conditional types allow developers to build types that adapt based on other types, leading to more expressive and flexible code.

5. Mapped Types

Mapped types transform existing types into new structures by iterating over each property, making it easier to implement type-wide modifications.

Example:

6. Template Literal Types

Template literal types use string literals to create new types, providing a way to enforce naming conventions or combine string patterns for type safety.

Example:

These types make your type definitions more expressive, offering clearer guidelines for code patterns.

7. Recursive Types

Recursive types are crucial for representing complex data structures like trees, linked lists, or deeply nested objects. They allow types to refer to themselves, providing a way to model data structures that are inherently recursive.

Example:

Recursive types are like building blocks that enable you to model structures as intricate as a family tree or a file directory.

Conclusion

Advanced TypeScript concepts such as union types, intersection types, type guards, conditional types, mapped types, template literal types, and recursive types are essential tools in a senior developer’s toolkit. Mastering these features ensures that your code is type-safe, concise, and scalable, setting a strong foundation for complex application development.

Material provided by: Kristiyan Velkov

Photo by Austin Distel on Unsplash


Kristiyan Velkov, Contributor at DevStyleR, is with over 10 years of experience in JavaScript and open-source development. He has honed his skills in tools like React.jsAngularVue.js, and Next.js. He also dive deep into DevOpsweb accessibility, and security—because great code is about more than just functionality!

LinkedIn         X

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What is Virtual DOM in React.js https://devstyler.io/blog/2025/03/14/what-is-virtual-dom-in-react-js/ Fri, 14 Mar 2025 07:00:35 +0000 https://devstyler.io/?p=127081 ...]]> The virtual DOM is a lightweight copy of the real DOM that allows React to manage changes more efficiently by minimizing the direct manipulation required on the real DOM.

The virtual DOM is a programming concept where an ideal, or “virtual”, representation of a UI is kept in memory and synced with the “real” DOM by a library such as ReactDOM. This process is called reconciliation.

This process significantly enhances the performance of web apps.

Understanding the virtual DOM is essential for developers who want to get the best out of React. It plays a key role in how React updates the UI, ensuring that changes are applied quickly without unnecessary re-renders.

What Is the Virtual DOM and How Does It Work?

The virtual DOM is an in-memory representation of the real DOM elements.

Instead of interacting directly with the real DOM, which can be slow and costly in terms of performance, React creates a virtual representation of the UI components.

This virtual representation is a lightweight JavaScript object that mirrors the structure of the real DOM.

Here’s a step-by-step process of how the virtual DOM works:

Understanding React’s Rendering and Update Lifecycle

Step 1: Initial Rendering (Virtual DOM Creation)
When the app starts, React builds the entire UI as a Virtual DOM, a lightweight JavaScript representation of the real DOM.

Step 2: Reacting to State and Props Changes
As the app runs, any changes in state or props trigger a re-render of the affected components. React updates the Virtual DOM to reflect these changes, without immediately modifying the real DOM.

Step 3: Diffing Algorithm — Spotting the Differences
React employs a highly efficient diffing algorithm to compare the updated Virtual DOM with its previous version. This comparison identifies only the changes, or “diffs,” between the two versions.

Step 4: Reconciliation — Deciding What to Update
Based on the identified differences, React determines the most efficient way to update the real DOM. Rather than re-rendering the entire UI, React targets only the specific parts that need updating.

Step 5: Applying Updates to the Real DOM
Finally, React updates the real DOM to match the Virtual DOM.

For example, let’s say we have the following counter functionality in the App component:

The virtual DOM representation will look like this:

When the Increase button is clicked once, only the h1 element is changed:

Comparing the Virtual DOM to the Real DOM

The real DOM is a built-in standard interface in browsers that represents and interacts with HTML elements, from Doctype declaration and the root html element to every other element in it.

This real DOM represents the whole HTML document as a tree structure and allows JavaScript to manipulate and change HTML documents.

Sometimes when those changes occur, the whole document might re-render.

This is in contrast to the virtual DOM, which uses a diff algorithm to compare the current and previous versions of updates to the DOM. It only re-renders the parts of the UI that have changed, instead of the whole thing.

Conclusion

The Virtual DOM is one of React’s core features, designed to enhance performance and ensure efficient UI updates. By leveraging the Virtual DOM, React can batch updates, reduce the frequency of expensive reflows and repaints, and apply changes with precision. This streamlined process results in faster, smoother UI updates, significantly improving the overall user experience.

Images and material provided by: Kristiyan Velkov


Kristiyan Velkov, Contributor at DevStyleR, is with over 10 years of experience in JavaScript and open-source development. He has honed his skills in tools like React.jsAngularVue.js, and Next.js. He also dive deep into DevOpsweb accessibility, and security—because great code is about more than just functionality!

LinkedIn         X

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From Idea to Innovation: Why ‘Code of the Future’ Is More Than a Competition https://devstyler.io/blog/2025/02/11/from-idea-to-innovation-why-code-of-the-future-is-more-than-a-competition/ Tue, 11 Feb 2025 16:19:44 +0000 https://devstyler.io/?p=126899 ...]]> Stoyan Ivanov is a former student of the Professional High School of Computer Programming and Innovation in Burgas and is currently continuing his education at the Faculty of Economics, Sofia University “St. Kliment Ohridski.” He is the manager of the “Association of Graduates of the Professional High School of Computer Programming and Innovation,” whose mission is to support young talent in the field of technology and innovation.

Stanislav Tashev is a final-year student at the Professional High School of Computer Programming and Innovation in Burgas, a Microsoft Certified Trainer, an active member of the “Association of Graduates of the Professional High School of Computer Programming and Innovation,” and plays a key role in organizing the upcoming edition of Code Of The Future. His focus is on actively supporting the development of young programmers by sharing his experience and expertise.

We talked with Stoyan and Stanislav Tashev about the upcoming edition of the Code Of The Future 25* hackathon.

How did the idea for the “Code of the Future” hackathon come about?

Stoyan: The idea for the “Code of the Future” hackathon was born from our personal experience as participants in many similar competitions. In the past, we have taken part in hackathons, even winning top prizes, but we were always interested in how such an event is organized from the organizers’ perspective. The best way to find out was to organize a hackathon ourselves. We decided to create “Code of the Future” and offer a platform that combines all the good practices we’ve seen with our own innovative ideas.

How do you determine the themes of the competition?

Stanislav: Our main goal is for the competition’s theme to be a surprise and announced on the day of the event, to ensure fairness and equal conditions for all participants. In last year’s edition, we gave each sponsor the opportunity to propose their own theme if they wished. This year, we’ll make the format even more interesting—sponsors will again be able to suggest themes, but at the opening ceremony, we’ll choose only one at random. This adds an element of surprise not only for the participants but also for us as organizers.

How prepared do participants need to be? What advice would you give them?

Stoyan: The hackathon is open to everyone, regardless of their level of technical preparation. We changed the evaluation criteria to place more emphasis on ideas rather than technical execution. Of course, participants will need to create a prototype (MVP) and validate their idea, but we encourage greater creativity and innovation. Our advice is to spend enough time developing the idea rather than jumping straight into coding. From personal experience, we know the first day is best used for generating the idea and distributing tasks within the team. Everyone can contribute according to their skills—some can do market research while others focus on development.

What is different about the 2025 edition?

Stanislav: Besides the new approach to choosing the theme, this year we’ve listened to the feedback from the previous edition to improve the participants’ experience as much as possible. We have prepared numerous surprises, more conveniences—including more food and coffee—as well as improvements to the mentorship program.

What is your favorite part of organizing the competition?

Stoyan: It’s very hard to pick just one aspect, but one of the most exciting moments is when we first hear the participants’ ideas and have the opportunity to discuss them. It’s a special moment when you see creativity and innovation come to life.

What challenges do participants most frequently encounter, and how do they overcome them?

Stanislav: Participants often face various challenges—from technical problems to a lack of clarity about how to structure their idea. That’s why, as in previous years, we’ll provide mentors. This year, however, we are adding a mentor reservation system so that teams can have personalized time with a mentor who focuses on their idea, presentation, and validation. Mentors won’t write code for them, but they will provide valuable guidance throughout the process.

 

How does the hackathon influence students’ skills and the projects they develop?

Stoyan: The hackathon is an excellent opportunity to develop skills in innovation, idea validation, and creating an MVP—a minimum viable product. This is a crucial process for starting a successful startup. Participants gain experience in presenting their ideas, analyzing the market, and creating practical solutions.

Can the projects be realistically applied in a business environment?

Stanislav: Absolutely. We even have an example of a project that started as a hackathon idea and is currently being successfully implemented in a business environment as a startup project. This shows that the innovative solutions created during the competition can find real-world applications.

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Learn from the Best: Top Free Courses Offered by Big Tech Companies https://devstyler.io/blog/2025/01/20/learn-from-the-best-top-free-courses-offered-by-big-tech-companies/ Sun, 19 Jan 2025 22:48:05 +0000 https://devstyler.io/?p=126846 ...]]> Unlock Your Potential: Free Online Courses from Top Tech Companies

To succeed in the tech industry, you need to be willing to learn and adapt – and with many big tech companies now offering free online courses, it’s never been easier to develop the skills you need to thrive. This is an excellent opportunity to learn from industry experts and enhance your skills without breaking the bank.

In this article, we’ll explore the best free courses offered by the leading tech companies, covering topics from artificial intelligence and machine learning to data science and cybersecurity.

Google – Google Developers Courses

Google offers a wide range of free courses on its Developers platform, covering topics such as:

Android Development

Learn to build Android apps with courses like “Android Basics” and “Android Fundamentals”.

Machine Learning

Dive into machine learning with courses like “Machine Learning Crash Course” and “TensorFlow tutorials”.

Cloud Computing

Explore Google Cloud Platform with courses like “Google Cloud Platform Fundamentals” and “Cloud Engineering”.

Microsoft – Microsoft Learn

Microsoft’s Learn platform provides free courses and tutorials on various topics, including:

Azure

Learn about Microsoft’s cloud computing platform with courses like Microsoft Azure AI Fundamentals: Computer Vision

Artificial Intelligence

Explore AI and machine learning with courses like AI-102 Course Introduction

Data Science

Develop data science skills with courses like Explore and analyze data with Python

Amazon – Amazon Web Services (AWS) Training and Certification

Amazon Web Services (AWS) offers free courses through its platform AWS Skill Builder .

Meta – Meta for Developers

Meta’s Developer platform offers free courses and tutorials on various topics, including:

Mobile App Development

Learn to build mobile apps with courses like “React Native” .

Web Development

Explore web development with courses like Programming with JavaScript.

Additional Resources:

  • Coursera offers a wide range of courses from top tech companies, including Google, Microsoft, and IBM.
  • edX provides free courses and certifications from leading institutions, including Harvard, MIT, and Microsoft.
  • Udemy offers a variety of courses on tech topics, including AI, machine learning, and data science.

These free courses offer a valuable opportunity to learn from industry experts and stay up-to-date with the latest technologies.

So why wait? Start learning today and take your skills to the next level!

Photo: Freepik

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Future of Work: How AI May Replace Mid-Level Software Engineers https://devstyler.io/blog/2025/01/19/future-of-work-how-ai-may-replace-mid-level-software-engineers/ Sun, 19 Jan 2025 20:39:28 +0000 https://devstyler.io/?p=126821 ...]]> According to recent statements made by Meta’s CEO Mark Zuckerberg, significant advancements in artificial intelligence (AI) are expected to revolutionize the field of software engineering. In a conversation with Joe Rogan just 10 days ago, Zuckerberg predicted that by 2025, AI technology will have advanced to the point where it can effectively replace mid-level software engineers.

Zuckerberg emphasized that AI will soon be capable of writing code, performing tasks that are currently done by human engineers.

“Probably in 2025,” he stated, “we at Meta, as well as the other companies that are basically working on this, are going to have an AI that can effectively be a sort of mid-level engineer that you have at your company that can write code”.

Furthermore, Zuckerberg envisions a future where AI engineers will play a dominant role in building and generating code for apps, including AI systems themselves.

“Over time, we’ll get to the point where a lot of the code in our apps, and including the AI that we generate, is actually going to be built by AI engineers instead of people engineers,” he added.

These statements suggest that the tech industry is on the cusp of a significant transformation, one that could potentially displace human jobs in software engineering. While this may seem like a daunting prospect, it also highlights the incredible potential of AI to drive innovation and efficiency in the industry.

In addition to Meta, other companies are also exploring the use of AI in software development. For example:

  • Microsoft has developed an AI-powered tool called IntelliCode that can help developers write code more efficiently and accurately.
  • Google has introduced an AI-powered platform called AutoML that allows developers to build machine learning models without extensive coding knowledge.
  • Amazon has developed an AI-powered tool called CodeGuru that can review code and provide recommendations for improvement.
  • GitHub has introduced an AI-powered tool called Copilot that can help developers write code by suggesting lines of code and completing tasks.

These examples demonstrate that the trend of using AI in software development is not limited to Meta, but is a broader industry shift. As the development of AI technology continues to accelerate, it will be interesting to see how these advancements unfold and what implications they may have for the future of work in software engineering. One thing is certain, however: the future of tech is likely to be shaped by the rapid evolution of AI capabilities.

Sources:

Photo: Screenshot from the video on YouTube – Joe Rogan Experience #1863 Mark Zuckerberg

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10 Essential Programming Habits Every Developer Should Adopt https://devstyler.io/blog/2024/11/28/tech-hiring-landscape-in-2024-key-trends-and-top-15-jobs/ Thu, 28 Nov 2024 13:51:11 +0000 https://devstyler.io/?p=125876 ...]]> In the fast-evolving world of software development, good habits can significantly enhance productivity, code quality, and team collaboration. While many developers have their own tried-and-true methods, there are some programming habits that should be more widely adopted.

Here are 10 habits that can make a substantial difference in the efficiency and effectiveness of your coding practice.

1. Writing Clear and Descriptive Comments

Comments are an essential part of coding, yet they are often neglected. Clear, descriptive comments can make code more understandable, especially for team members who might work on your code in the future. A good comment explains why a piece of code exists, not just what it does.

2. Consistent Naming Conventions

Using consistent naming conventions for variables, functions, and classes is crucial for readability. Whether you prefer camelCase, snake_case, or PascalCase, the key is to be consistent throughout your codebase. Consistency helps other developers understand and navigate your code more easily.

3. Regular Code Reviews

Code reviews are an excellent way to catch bugs, ensure best practices, and foster knowledge sharing within a team. Regularly reviewing each other’s code can lead to improved code quality and team cohesion. Make it a habit to both give and receive constructive feedback.

4. Writing Unit Tests

Unit tests are a cornerstone of reliable software. They help ensure that individual parts of your code work as expected and make future changes safer. Developing a habit of writing unit tests alongside your code can significantly reduce bugs and improve code quality.

5. Refactoring Code

Refactoring involves restructuring existing code without changing its external behavior. It’s a good habit to regularly review and refactor code to improve its structure, readability, and maintainability. This process can help eliminate technical debt and make your codebase more robust.

6. Automating Repetitive Tasks

Automation can save a lot of time and reduce human error. Whether it’s through scripts for setting up environments, continuous integration pipelines, or automated testing, finding ways to automate repetitive tasks can lead to more efficient and reliable workflows.

7. Documenting Your Code

Documentation goes hand-in-hand with commenting but focuses on providing a higher-level overview. Good documentation can include README files, API documentation, and guides. Well-documented codebases are easier to use, maintain, and contribute to.

8. Using Version Control Effectively

Version control systems like Git are indispensable tools for modern software development. Effective use includes writing meaningful commit messages, branching strategies, and regularly pushing code. Proper version control habits can prevent a lot of headaches and facilitate collaboration.

9. Adopting a Learning Mindset

The tech industry evolves rapidly, and there’s always something new to learn. Adopting a continuous learning mindset can help you stay up-to-date with the latest trends, tools, and best practices. Regularly reading articles, taking courses, and attending conferences can keep your skills sharp.

10. Prioritizing Code Readability

Readable code is more important than clever code. Writing code that is easy to understand can save time and reduce errors in the long run. This means using clear variable names, breaking down complex functions, and adhering to coding standards. Remember, code is read more often than it is written.

Good programming habits are not just about writing code; they are about writing code that is clean, maintainable, and collaborative. By adopting these ten habits, developers can improve their workflow, create better software, and work more effectively within their teams. Whether you’re a seasoned programmer or just starting out, integrating these practices into your daily routine can lead to substantial improvements in your coding projects.

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