Harness engineering for coding agent users
The term harness has emerged as a shorthand to mean everything in an AI agent except the model itself – Agent = Model + Harness. That is a very wide…
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Building a PC, Part IX: Downsizing
Hard to believe that I’ve had the same PC case since 2011, and my last serious upgrade was in 2015. I guess that’s yet another sign that the PC is…
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SUMX vs CALCULATE in DAX: Which One Is Really Faster? | by Thebitoolbox | Jul, 2026
A Deep Dive with Real Benchmarks Press enter or click to view image in full size Generated with Gemini For years, Power BI practitioners have repeated a single phrase like…
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How to Implement Role-Based Access Control in a Node.js REST API with JWT
The first time I built an API without thinking about roles, I gave every logged-in user the same access. It worked fine until a regular user accidentally hit a delete…
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Paging Charity? How do I get my leaders to stop running teams Into the ground?
Hi Charity, I’m a senior staff engineer, and I’m wondering what advice you might have for a person in my role in a large company to affect priorities and the…
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The Stale Closure Problem in React.
How to Fix It ? You can solve this problem in two ways, depending on how you want to manage your component. 1. Use a Functional State Updater The cleanest…
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Why is Meta destroying its engineering organization?
Hi – this is Gergely with a free issue of the Pragmatic Engineer Newsletter. In every issue, I cover challenges at Big Tech and startups through the lens of senior…
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How Skill Concentration Sets Tech and Healthcare Sectors Apart
While most US occupations require a diverse mix of skills, nearly a quarter of analyzed roles are “skill-concentrated,” meaning a single category accounts for more than 50% of all required…
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Principles of Mechanical Sympathy
Over the past decade, hardware has seen tremendous advances, from unified memory that’s redefined how consumer GPUs work, to neural engines that can run billion-parameter AI models on a laptop….
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Updating The Single Most Influential Book of the BASIC Era
In a way, these two books are responsible for my entire professional career. With early computers, you didn’t boot up to a fancy schmancy desktop, or a screen full of…
