jacobp100

Continuations (“function calls”) reduce the amount of optimisations you can do around memory - both space wise and computationally

It can be both

Legacy - they’re blocking

The only people I know with full EVs don't have driveways. It's not really an issue - you can charge when you go grocery shopping

Apple has a third party sell them - https://selfservicerepair.eu/en-GB/home

I was looking into this. The M5 performance cores can be scaled down to match efficiency cores in performance and power usage.

I believe they lower the clock speed, limit how much work is done in parallel on each core, and limit how aggressive the speculative execution is so less work is wasted.

The guy you relied to wrote the locking code. If you’re so certain they’re doing it wrong, would it not be easier to just prove it? It’s only one file, and they already have benchmarking set up

I think all UK airports have easy to find water bottle refill stations

JpegXL and AVIF are comparable formats. Google argued you only needed one, and each additional format is a security vulnerability.

I am curious if the equation of CPU-determined graphics being faster than being done on the GPU has changed in the last decade

If you look at Blend2D (a CPU rasterizer), they seem to outperform every other rasterizer including GPU-based ones - according to their own benchmarks at least

Safari probably is that size because WebKit is a system framework, so it’s just the size of the UI code

The train now approaching platforms 1 and 2 is the…

The signals bounce off the tunnels a lot

Why do you think the padding as a percentage is relative to the width of the parent? Do you think it was a happy accident? I don't think so, it was purposefully put there in the specs so that we could have boxes with fixed aspect ratios. This is just the tip of the iceberg.

It’s because you cannot do a percentage of a height unless your parent’s height is fixed - something that happens naturally maybe 1% of the time. You’d be missing vertical borders in almost every case with your suggestion

I hope with Alan Dye now out of Apple they will revisit a lot of what just happened. There’s been a lot of places where things have just become worse

I had a blog post on something similar (but less sophisticated)

https://jacobdoescode.com/2025/05/18/precomputing-transparen...

Since you’re on the topic, what ever happened to the multi threading stuff you were doing on JSC? Did it stop when you left Apple? Is the code still in JSC or did it get taken out?

iOS used to do this using the Cassowary constraint solver pre-SwiftUI. It’s the worst thing to work with. So much code turning on and off constraints, dynamically adding constraints when you have new views. And that’s before you get into conflicts

This might actually happen indirectly. Kagi’s new browser uses WebKit. macOS only now, but eventually it’ll come to windows

I do a few apps that get about this, but the one most interesting to the audience here is a scientific calculator for iOS, iPadOS and macOS

https://jacobdoescode.com/technicalc

One time payment, no subscriptions or IAPs

This basically makes a rust server to do the routing, then uses the Boa JS engine to evaluate the JS to handle the route

With this approach, you might be able to do some multithreading to improve the throughput

However, each request is almost guaranteed to be slower because V8 will be faster than Boa

You could also achieve this by spinning up multiple NodeJS instances and putting an nginx server in front to do load balancing - which is pretty standard practice

The reactors will also be cast in the UK by Sheffield Forgemasters

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Every update slows your phone down temporarily, because there’s background processing that goes on for a while after. That’s always been the case

Upgraded my 12 mini. Performance is fine. Battery life is as it always was

Net migration is expected to be 200k in 2026

The festival part is wrong - you can earn £1,000 from self employment without paying tax on it

I do iOS dev as a side-hobby too (https://jacobdoescode.com/)

People are right it isn’t anywhere near a salary, but I have fun and it has opened job opportunities too

For marketing, I found /r/Apple very receptive to self promotion posts - just make sure you meet the criteria. You can also do a discount period and advertise on /r/AppHookup. Last Black Friday I reduced a $2 to 29c (lowest allowed price) and made just shy of $500, and it boosted my place in the store search

Best of luck!

This is the correct answer. They even expose JavaScript Core to apps

Yes the VM discussed is similar to JVM