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I was replacing a 2014 petrol MPV with a used EV. Along the way I collected insurance quotes, checked the vehicle tax bracket, asked for a battery health certificate, got a trade-in offer, and compared a cash price against a dealer’s financing plan. Somewhere in the middle of all that I wanted one simple thing: a single number telling me what switching would actually cost per year, compared to just keeping the car I already had. ...

If you’re running your Vitest suite on a high thread count machine—like an 8-core or 16-core development machine—you may encounter a frustrating error that looks like this: EMFILE: too many open files This issue can be cryptic at first, especially when your system doesn’t seem anywhere near running out of resources. But the root cause might not be in your system limits—it could be in your import statements. The Unexpected Culprit: Named Imports from MUI In my case, after hours of digging, I discovered that the error was caused by using named imports from Material UI (MUI) components and icons. These named imports, when used across many test files, were triggering Vitest to open an excessive number of files behind the scenes. ...

Streaming audio locally can be useful for broadcasting live audio to multiple devices or applications within the same network. With FFmpeg, this setup becomes simple, allowing you to stream audio directly from your microphone to any player that supports UDP streaming, like VLC. This guide explains how to set up FFmpeg on Windows, configure a low-latency stream, and tune it for optimal performance. Step 1: Install FFmpeg on Windows To use FFmpeg on Windows, you’ll need to download and install it. Follow these steps: ...

Updating nested array subdocuments based on a field in the main document is a common task when working with MongoDB and Mongoose. Here’s a simple guide and example to help you accomplish this. Plan Use Model.updateMany() or Model.findOneAndUpdate() to update multiple or a single document. Use an aggregation pipeline ([{}]) as the second argument to reference document fields. Use the $set stage within the pipeline to update the nested array. Use the $$ROOT variable to reference fields from the main document. Example Assume you have a User model where each user has an array of posts, and you want to set each post’s authorName field based on the user’s name field. ...

How to Download Streaming Video Using ffmpeg Streaming video has become ubiquitous, but sometimes you might want to save a portion of a video for offline viewing or archival purposes. One powerful tool for this task is ffmpeg, a versatile command-line program for handling multimedia data. In this guide, we’ll walk you through the process of installing ffmpeg and using it to download streaming video. Installing ffmpeg Before you can use ffmpeg, you need to install it on your system. One of the simplest ways to install ffmpeg on Windows is via Chocolatey, a package manager for Windows. Follow these steps to install ffmpeg: ...