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Toptal Blog

The Toptal Blog is the top hub for developers, designers, finance experts, executives, and entrepreneurs, featuring key technology updates, tutorials, freelancer resources, and management insights.

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Video Game Physics Tutorial - Part III: Constrained Rigid Body Simulation

by Nilson Souto

In Part I of this three-part series, we saw how the free motion of rigid bodies can be simulated. In Part II, we saw how to make bodies aware of each other through collision and proximity tests. Up to this point, however, we still have not seen how to make objects truly interact with each other. The final step to simulating realistic, solid objects, is to apply constraints, defining restrictions on the motion of rigid bodies. In this article, we'll discuss equality constraints and inequality constraints. We'll describe them first in terms of a force-based approach, where corrective forces are computed, and then in terms of an impulse-based approach, where corrective velocities are computed instead. Finally, we'll go over some clever tricks to eliminate unnecessary work and speed up computation.

25+ minute readContinue Reading
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Data Mining for Predictive Social Network Analysis

by Elder Santos

Analysts have come to recognize social network data as a virtual treasure trove of information for sensing public opinion trends and groundswells of support. In this article, Toptal Engineer Elder Santos describes the techniques he employed for a proof-of-concept that effectively analyzed Twitter Trend Topics to predict, as a sample test case, regional voting patterns in the 2014 Brazilian presidential election.

7 minute readContinue Reading
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Power Efficient Home Offices Can Save Money And Polar Bears

by Nermin Hajdarbegovic

Most of us work from home offices, so we use cheaper household electricity and enjoy better prices than businesses in many parts of the world. Since we don’t commute or drive to work each morning, we already save a bit of money and reduce our carbon footprint. However, there is always room for improvement.

13 minute readContinue Reading
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Advanced Tactics for Highly Collaborative, Remote Teams

by BREANDEN BENESCHOTT

Any time you’re physically out of the office or working with someone who isn’t next to you, you’re working remotely. At Toptal, working remotely is a productive and efficient reality that we evangelize to our clients, while practicing what we preach. In this article, Toptal COO Breanden Beneschott shares great tactics in operating highly collaborative remote teams.

6 minute readContinue Reading
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Top 8 Most Common Mistakes That Backbone.js Developers Make

by Mahmud Ridwan

Backbone.js equips the developer with an array of tools that are minimal but extremely flexible. This gives developers the option to design the applications the way they want, but also introduces a number of way things can go wrong. This article outlines a few common mistakes that Backbone.js developers can make, and how they may avoid them.

10 minute readContinue Reading
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Getting the Most Out of Your PHP Log Files: A Practical Guide

by Ilya Sanosian

Log files may very well be one of the most underestimated and underutilized tools at a developer's disposal. Beyond their value for debugging, with a bit of creativity and forethought, logs files can be leveraged to serve as a valuable source of usage information and analytics. In this article, In this article, Toptal engineer Ilya Sanosyan provides a practical guide to maximizing the value we get from our logs.

15 minute readContinue Reading
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Windows 10 Development: Addressing Old Problems And Opening New Doors For Developers

by Nermin Hajdarbegovic

Windows 10 represents a departure from Microsoft’s traditional OS strategy. It’s not just a new operating system, it’s an automatic and free update for millions of Windows 8.1 devices. It’s also designed to address a number of user complaints related to the Windows 8.x UI. The changes aren’t just skin deep, as Windows 10 is not a mere redesign with a new UI and fancier apps; it might even mark the start of a new era for Microsoft, and in this post I will explain why.

9 minute readContinue Reading
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Top 18 Most Common Mistakes that AngularJS Developers Make

by Michal Mikolajczyk

AngularJS is a very powerful framework. It is the third most starred repository on GitHub. It is not difficult to start using, but the goals that it is intended to accomplish demand comprehension. No longer can we ignore memory consumption, because it will not reset on navigation anymore. This is the vanguard of web development. Let’s embrace it!

25+ minute readContinue Reading
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Azure Tutorial: Predicting Gas Prices Using Azure Machine Learning Studio

by Ivan Matec

Machine learning has changed the way we deal with data. Data driven problems, that are difficult to solve using standard methods, can often be tackled with much more ease using machine learning algorithms. In this article, we will explore Azure Machine Learning features and capabilities through solving one of the problems that we face in our everyday lives.

5 minute readContinue Reading

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