Toptal Engineering Blog

The Toptal Engineering Blog is a hub for in-depth development tutorials and new technology announcements created by professional software engineers in the Toptal network.

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Stork, Part 3: Implementing Expressions and Variables

by Jakisa Tomic

Developing a new programming language from scratch tends to create unique challenges, followed by unconventional solutions that may go against some programming dogmas. In Part 3 of our Stork series, Toptal Full-stack Developer Jakisa Tomic elaborates on how C++ macros can help and why expression implementation might not be as straightforward as expected.

18 minute readContinue Reading
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The Need for Speed: A Toptal JavaScript Coding Challenge Retrospective

by Eva Bojorges Rodriguez

Toptal's JavaScript Speed Coding Challenge invited creative solutions from the beginning. As the week played out, competitors got closer and closer to the maximum theoretical score. Then something unexpected happened...

6 minute readContinue Reading
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Stork, Part 2: Creating an Expression Parser

by Jakisa Tomic

Would you rather develop a statically or dynamically typed programming language? How would you devise your expression parser? In the second part of our Stork series, Toptal Full-stack Developer Jakisa Tomic outlines his preferred approach and demonstrates how you can create a functional expression parser.

14 minute readContinue Reading
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Stork: How to Make a Programming Language in C++

by Jakisa Tomic

Did you ever consider creating your very own programming language, either as a result of necessity or professional curiosity? In part one of our series, Toptal Full-stack Developer Jakisa Tomic takes the first steps toward creating a lightweight scripting language written in C++.

11 minute readContinue Reading
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Do Your Homework: 7 AWS Certified Solutions Architect Exam Tips

by Ross Bowman

Cloud architects with the AWS Certified Solutions Architect - Associate qualification are in high demand, with good reason—the AWS exam sets the bar high. What's the best way to prepare for it?

8 minute readContinue Reading
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Timestamp Truncation: A Ruby on Rails ActiveRecord Tale

by Maciek Rząsa

Tests should keep apps from being flaky. But tests themselves can become flaky—even the most straightforward ones. Here's how we dove into a problematic test on a PostgreSQL-backed Rails app, and what we uncovered.

< 5 minute readContinue Reading
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Semi-supervised Image Classification with Unlabeled Data

by Urwa Muaz

Supervised learning is the key to computer vision and deep learning. However, what happens when you don’t have access to large, human-labeled datasets? In this article, Toptal Computer Vision Developer Urwa Muaz demonstrates the potential of semi-supervised image classification using unlabeled datasets.

9 minute readContinue Reading
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Stale-while-revalidate Data Fetching with React Hooks: A Guide

by Avi Aryan

Inspired by stale-while-revalidate cache control logic, modern sites implement stale-while-refresh logic on the UI side. Thankfully, React Hooks make this logic painlessly reusable across components.

15 minute readContinue Reading

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