ClojureScript from First Principles [video]
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My Side Quest into Haskell, Reverse Polish Notation, and Parsing 26 Jun, 2025 My Journey into Haskell: Building a Reverse Polish Notation Calculator Introduction: A Side Quest In my attempt to get my first paycheck, aka get a job, I have led myself down a fascinating rabbit hole into functional programming, mathematical notation, and parsing theory. This is the story of how I discovered Haskell, tackled reverse Polish notation, and learned about monadic parsing along the way. My journey bega
The venture capital world has always had a hot-and-cold relationship with the Midwest. Investors rush in during boom times, then retreat to the coasts when markets turn sour. For Columbus, Ohio-based Drive Capital, this cycle of attention and disinterest played out against the backdrop of its own internal upheaval several years ago — a co-founder split that could have ended the firm but may have ultimately strengthened it. At a minimum, Drive achieved something newsworthy in today’s venture lan
Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . Amazon Prime Day typically brings great discounts on all sorts of electronics, but it’s a good idea to go for the expensive gear first. We consider robot vacuums to be in that category because, while there are solid affordable models available today, you’ll likely still spend at least
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"We're long past the days when it was possible to simply say "no" to corporate stalking without consequence. Today, when we say "no", we get punished for it. But that only goes to show WHY, more than ever, we should be saying "no"." Google Tag Manager. It's a product which, by design, cloaks a range of the Internet's most invasive and unethical scripts in an opaque closet, then springs them out in disguise. Combining immense power with obfuscation and vast scale of use, Google Tag Manager is th
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Introduction With the release of the NVIDIA Blackwell GPUs and RDNA 4-based Radeon 9000-series GPUs, we finally have consumer video cards that support the PCIe 5.0 standard. Although we have had motherboards with support for it for some time now, we didn’t have any devices other than storage that took advantage of it. This leads now to the question: What impact does PCIe 5.0’s increased bandwidth have on GPU performance in content creation applications? PCI Express (abbreviated PCIe or PCI-e)
As an architect and integrator of complex airborne systems, Dassault Aviation intends to take advantage of its space expertise to develop spaceplane solutions that disrupt current systems. VORTEX (Véhicule Orbital Réutilisable de Transport et d’Exploration) Designed to operate in space and return to Earth like an aircraft, these intrinsically dual-use vehicles have the potential to transform space operations—enabling new applications across commercial, scientific, and military missions. Space
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Jonathan Feist / Android Authority We all want a robot vacuum, right? The idea of delegating a daily task to a machine is lovely! The good ones can be expensive, though. If you’re looking to keep your floors clean and your bank account healthier, our favorite budget robot vacuum is the Eureka E20 Plus, and it’s even cheaper right now! Buy the Eureka E20 Plus for just $349.99 ($150 off) This offer is available from Amazon. The only thing to keep in mind is that it is essentially an early Prime
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"We're long past the days when it was possible to simply say "no" to corporate stalking without consequence. Today, when we say "no", we get punished for it. But that only goes to show WHY, more than ever, we should be saying "no"." Google Tag Manager. It's a product which, by design, cloaks a range of the Internet's most invasive and unethical scripts in an opaque closet, then springs them out in disguise. Combining immense power with obfuscation and vast scale of use, Google Tag Manager is th
Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . Prime Day 2025 begins soon on July 8, but members can already save on a bunch of tech available on Amazon's site. One such early deal is on the Roomba Robot Vacuum and Mop Combo, which is down to $140 for Prime members right now. That's nearly half off its usual price and a far cry fro
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Bcachefs may be headed out of the kernel The history of the bcachefs filesystem in the kernel has been turbulent, most recently with Linus Torvalds refusing a pull request for the 6.16-rc3 release. Torvalds has now pulled the code in question, but also said: I think we'll be parting ways in the 6.17 merge window. You made it very clear that I can't even question any bug-fixes and I should just pull anything and everything. Honestly, at that point, I don't really feel comfortable being involved
For years, scientists have suspected that stars can meet their doom by a one-two punch of back-to-back explosions — but they've never seen visual evidence of this happening. That just changed. Astronomers using the Very Large Telescope in Chile have taken the first-ever image of a star that died in a stellar "double-detonation," leaving behind a spectacular supernova remnant. Their findings, published as a new study in the journal Nature Astronomy, deepen our understanding of the stellar evolu
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A good vacuum can save you a lot of work. After all, using a rubbish one just means that you’ll end up going over the same spots again and again without ever actually cleaning the floor. That’s especially tricky if you’ve got a home that’s prone to extra dust, crumbs, or pet hair. Nobody likes having to vacuum, so you’re better off investing in one that can get the job done really well. See at Amazon Well, Amazon Prime members will be very thankful for this early Prime Day deal, because it bri
C. Scott Brown / Android Authority After spending a few years setting itself up, Nothing boldly launched the Nothing Phone 3 as its top-tier flagship this week. Coming in at $799, it takes on the proper flagships from Samsung, Google, Apple, and others. While one can argue that it comes out on top against these three, Chinese competitors like OnePlus can give it a run for its money with the OnePlus 13. We asked you if you thought the Nothing Phone 3 was value for money at $799, and it seems a v
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The sheer number of robot vacuums now available on the market is both good and bad news if you’re shopping for one: Good because you’ve got a lot of models to pick from, but bad because you can spend a lot of time going around in circles trying to figure out which option might be best for you. If you’re aiming to get the most bang for your buck—and we’re assuming most people are—then the Eureka E20 Plus robovac deserves a place on your shopping shortlist. Right now it’s at its lowest price so f
The new Fairphone 6 is smaller and more modular than older models in the series, but it’s just as repairable. The phone picked up a perfect score in iFixit’s teardown test, despite no longer offering tool-free battery replacements. It helps that the only tool you do need — throughout the phone — is a T5 Torx screwdriver, and only seven screws sit between you and a battery swap. Fairphone itself has shown you can get from shutdown to reboot with a new cell in just two minutes, so it’s still a si
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