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Meet Web Audio API, a powerful programming interface for controlling audio on the web. Gone are the days when the web browser could rarely play a sound file correctly. With this API, you can now load sound from different sources, apply effects, create visualizations, and do much more.

In this article, Toptal Freelance Software Engineer Joaquín Aldunate shows us how to unleash our inner musician using Web Audio API with the Tone.js framework by giving us a brief overview of what this API has to offer and how it can be used to manipulate audio on the web.

Ever tried to create a JSON data structure that includes entities with bidirectional relationships? If you have, you know that this often results in errors or exceptions being thrown.

In this article, Toptal Freelance Software Engineer Nirmel Murtic provides a robust working approach to avoiding these errors when creating JSON structures that included entities with bidirectional (i.e., circular) relationships.

Today, the notion of repetitively modeling or drawing the windows, doors, and walls of standardized buildings seems archaic, so why do it? If you want to handle DWG files and ACA objects programmatically, one of the best platform options is Teigha Architecture.

In this article, Toptal Freelance Designer Alexey Abramovsky walks us through the DWG production of a small house to introduce us to the benefits of Teigha. Go from foundations to full render in this quick tutorial.

How many times have you used the find-and-replace functionality (or RegEx) across a directory to make changes to JavaScript source files? Up your refactoring game by using codemods, scripts used to rewrite other scripts.

In this article, Toptal Freelance Developer Jeremy Greer walks us through three common uses of codemods, using the toolkit “jscodeshift.”

The Scala language has continued to gain popularity over the last several years, thanks to its excellent combination of functional and object-oriented software development principles, and its implementation on top of the proven Java Virtual Machine (JVM).

Creating a language that compiles to Java bytecode requires a deep understanding of the inner workings of the Java Virtual Machine. To appreciate what Scala’s developers have accomplished, it is necessary to go under the hood, and explore how Scala’s source code is interpreted by the compiler to produce efficient and effective JVM bytecode.

More than 60 percent of trading activities with different assets rely on automated trading and machine learning instead of human traders. Today, specialized programs based on particular algorithms and learned patterns automatically buy and sell assets in various markets, with a goal to achieve a positive return in the long run.

In this article, Toptal Freelance Data Scientist Andrea Nalon explains how to predict, using machine learning and Python, which trade should be made next on the S&P 500 to get a positive gain.

Nowadays, front-end development workflows involve many modern tools and preprocessors that not only streamline the whole process, but also allow you to spend less time on common web tasks, giving you more time to focus on other aspects of the project that require more careful and skilled insight. Sass, the scripting language for syntactically awesome stylesheets, comes with robust and built-in support for mixins - an essential feature for keeping your stylesheets DRY.

In this article, Toptal Freelance Software Engineer Justin Brazeau shows us 10 useful Sass mixins that help keep your stylesheets manageable by breaking them into smaller reusable bits, each with its own focus.

Would you like to test your PHP code like a boss? Do you feel that basic unit tests and PHPUnit just don’t cut it anymore? If your answer to both questions is yes, you might want to try Codeception, a mature and well-documented testing framework designed to outperform PHPUnit and Behat.

In this post, Toptal Freelance Software Engineer Vasily Koval describes how he came to take the plunge and start using Codeception, and he explains why you should check out Codeception for your PHP testing needs.

Before you use Unity’s straightforward and intuitive tool for multi-platform development, become familiar with and avoid these common Unity mistakes.

Do you have what it takes to travel the globe while working full-time? Can you work on the road while still finding enough time to take care of yourself and enjoy the adventures of travel? It’s not a lifestyle for everyone, but it’s probably not as tricky or demanding as you think, especially when you have a sense of purpose.

In this article, Toptal Director of Operations Dror Liebenthal explains how to enjoy the nomadic lifestyle without compromising your professional performance, health, or social life.

Clustering algorithms remain an important part of unsupervised learning and machine learning workflows. These algorithms help uncover patterns in unlabeled data, but each comes with different strengths, trade-offs, and ideal use cases.

In this article, Toptal Freelance Software Engineer Lovro Iliassich explores clustering approaches ranging from K-Means and EM clustering to Affinity Propagation and DBSCAN.