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Matt Massicotte

@massicotte.org

apple platform dev, outdoors, justice, games, he/him Every problem has a simple wrong answer https://github.com/mattmassicotte https://www.massicotte.org https://mastodon.social/@mattiem

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Latest posts by Matt Massicotte @massicotte.org

The right ok, this is what I thought but wanted to clarify. Thank you!

11.03.2026 12:52 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

It won't be long before, for most people across most domains, "truth" is what AI tells you. It's the ultimate target for propaganda. Plus, OpenAI is very closely aligned with the far right.

11.03.2026 12:51 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

You are joking but yes, they are coming for LLMs for sure. Thats the whole reason Grok even exists.

11.03.2026 12:30 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Your choice of model will be a major political campaign favor. Vote GPT 4.1 2026.

11.03.2026 09:55 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I really liked this!

But I have a question on this part specifically. What do you mean by "become average"?

11.03.2026 09:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I cannot imagine whitespace is significant as part of the tokenization input, but maybe output?

Also, it's never too late!

08.03.2026 15:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Ah, ok I’m familiar with these problems.
Do you understand what’s going on here? This mode demands a lot of understanding from any client using it.

I *think* the best you can do is mark protocols that cannot be compatible with SendableMetatype.

07.03.2026 18:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Pitch: `Continuation` β€” Safe and Performant Async Continuations @ktoso and I would like to pitch a new Continuation type for the stdlib. You can view the latest and full draft as a Swift evolution PR. Continuation β€” Safe and Performant Async Continuations Proposal: SE-NNNN Authors: Fabian Fett, Konrad Malawski Review Manager: TBD Status: Pitch Implementation: PR in Swift Async Algorithms Related Proposals: SE-0300: Continuations for interfacing async tasks with synchronous code SE-0390: Noncopyable structs and enums SE-0413: Typed throws Summary We pr...

Ohh a simpler and safer continuation type!

06.03.2026 11:21 πŸ‘ 16 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

This can be a very hard mode to support.

I *think* a big part of it is indicating "this protocol cannot be used only from the MainActor", which you express with a conformance to SendableMetatype.

But I'm interested in specific examples of things you are running into! Please share!

06.03.2026 11:01 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Does this mean you have public protocols that you want to keep compatible with clients using MainActor by default, or that your library is using it?

06.03.2026 10:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Ah!

So there are no edge cases I'm aware of here. You make the API you want. If you want to give clients the ability to use it without checks, you add "@.preconcurrency" to your public APIs. I don't think 6.2 changes anything about this…

05.03.2026 21:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Post image

We're fuelling up for another year of SwiftLeeds, and we need YOU in the cockpit.

Whether you want to talk about SwiftUI, Swift concurrency, server-side Swift, accessibility, or something we haven't even thought of β€” we'd love to see your submission.

Submit your talk idea β†’ swiftleeds.co.uk/cfp

02.03.2026 10:36 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 1

So, if anyone out there knows someone who knows someone who's looking for someone who is an experienced engineer, and is also a very good communicator and designer and guy-who-actually-understands-how-to-make-products-good...let me know.

27.02.2026 19:07 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
GitHub - mattmassicotte/TaskGate: An tool for managing actor reentrancy with Swift Concurrency An tool for managing actor reentrancy with Swift Concurrency - mattmassicotte/TaskGate

After a thoughtful nudge, I have renamed my "Lock" package to use the term "Gate". And while I was in there, I updated a bunch of things, including finally getting a recursive gate working!

I have found this kind of tool incredibly useful for managing actor reentrancy with Swift Concurrency.

27.02.2026 17:20 πŸ‘ 10 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Same

27.02.2026 04:15 πŸ‘ 7 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Marisa is legit. Please share if you know someone she can talk to.

26.02.2026 16:41 πŸ‘ 100 πŸ” 22 πŸ’¬ 1 πŸ“Œ 1
Preview
Cannot using `sending` with `some` return value Β· Issue #74846 Β· swiftlang/swift Description Hmm, shouldn't this be allowed? It is a result! test.swift:7:21: error: 'sending' may only be used on parameters and results 5 | } 6 | 7 | func makeThing() -> sending some MyProtocol { ...

It's a pretty esoteric thing, but I had to call it out because it's so nice to see small things get fixed. The mysterious JamieQ saves the day yet again.

26.02.2026 12:23 πŸ‘ 7 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Very basic, just playing around with NetNewsWire…

26.02.2026 01:41 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Not yet!

25.02.2026 14:20 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I think I may be an RSS person now

25.02.2026 11:28 πŸ‘ 21 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

Ohhh that's a very interesting point!

24.02.2026 13:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

While I am inclined to agree, it is technically possible to remove "temperature" and make LLM output deterministic. It makes it much worse, if I understand right, but it is a fascinating aspect.

24.02.2026 13:11 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
I am not a calculator I am not a calculator

πŸ˜†

I attempted to tackle this question here, in case it is interesting

24.02.2026 13:02 πŸ‘ 3 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

If you ask me to solve a problem for you, do I become a tool?

24.02.2026 12:54 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Content-addressable memory!

24.02.2026 12:09 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Is non-artificial intelligence a tool?

24.02.2026 12:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I find the idea that AI is a compiler or abstraction very strange. But I do think "delegation" is getting closer.

(I still don't buy that it is a "tool", even if it can be used like one.)

24.02.2026 11:13 πŸ‘ 6 πŸ” 0 πŸ’¬ 5 πŸ“Œ 0

The cocoaheads group there was amazing, and worth checking out

24.02.2026 10:53 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Ok I understand what you were all saying about Subnautica now

23.02.2026 01:18 πŸ‘ 6 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

I was not even aware of trailers until now. Thanks, I hate it too.

21.02.2026 12:30 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0