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Matt Massicotte

@massicotte.org

2.6K followers 1.3K following 1.7K posts

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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Matt Massicotte @massicotte.org · Nov 18

Wrote this one a while ago but it still seems to be helpful for people.

Swift concurrency through a step by step examination of a network request. #SwiftLang

www.massicotte.org/step-by-step...

Concurrency Step-by-Step: A Network Request

When I was first learning to program I had absolutely no idea what I was doing. I was using C, and I remember desperately putting in * and & characters until things compiled. But, this was pre-Mac OS ...

www.massicotte.org

Reposted by Matt Massicotte

Nathan Manceaux-Panot @cykele.ro · 5h

New blog post! Retcon 1.4 got a lot faster. Much of that speed is owed to caches. Straightforward caches, oddly-specific caches, hard-to-invalidate caches, the works. Here's some details about them!

pending.design/making-retcon-...

Making Retcon fast: A cache for every need

Big speedups through bespoke caches.

Reposted by Matt Massicotte

Daniel Saidi @danielsaidi.bsky.social · 12h

The videos from @ioSKonf earlier this year are starting to roll out. The video from my talk Distribute & Monetize Closed Source SDKs with the Swift Package Manager is now available. I just realized I desperately need podcast voice training 😬

#swift #swiftui

danielsaidi.com/talks/2025/0...

Distribute & Monetize Closed-Source SDKs with the Swift Package Manager

I gave this talk at iOSKonf25, in Skopje, North Macedonia, in May 2025. on how to set up, distribute, and monetize a closed-source SDK wi...

danielsaidi.com

Matt Massicotte @massicotte.org · 21h

I just went and unstarred/re-starred, which I *think* may be a crude hack to get it to show up in people’s GitHub activity feeds again.

Reposted by Matt Massicotte

dijamantina.bsky.social @dijamantina.bsky.social · 21h

I’ve been rebuilding my Swift projects from the ground up — and stumbled into something I call “Extreme Packaging.”

Every responsibility lives in its own Swift Package.

🧩 Full write-up → aleahim.com/ExtremePacka...
#Swift #iOSDev #SwiftPM #Architecture

ExtremePackaging

A Modular Architecture Methodology for Swift Projects By Mihaela Mihaljevic

Matt Massicotte @massicotte.org · 1d

It’s just awful

Matt Massicotte @massicotte.org · 1d

It’s such garbage

Matt Massicotte @massicotte.org · 1d

Step 1, make friends on LinkedIn.
Step 2, help those friends find other social networks.

Matt Massicotte @massicotte.org · 1d

Many teams just end up making their own. But a first party solution here would have been so nice.

Matt Massicotte @massicotte.org · 1d

I strongly dislike LinkedIn, but I like people and finding ways to connect with them…

Matt Massicotte @massicotte.org · 1d

My assumption is that someone with power decided “Combine is done”. And that’s incredible because I bet a few carefully-considered updates could make the migration off of it more clear, simpler, and less painful.

Matt Massicotte @massicotte.org · 1d

Product! There are many people that use it exclusively.

Matt Massicotte @massicotte.org · 1d

It is wild how dominant LinkedIn is at Swift conferences. It’s not even close.

Matt Massicotte @massicotte.org · 1d

Oh well this was so kind of you to say!! Thank you so much!

Matt Massicotte @massicotte.org · 2d

My talk from ServerSide is up!

ServerSide.swift @serversideswift.info · 2d

More videos continue to land! Next up, Matt Massicotte teaches us how to approach approachable concurrency

youtu.be/eqeDPIK2Msc

How To Approach Approachable Concurrency - Matt Massicotte

🎥 Recorded at the ServerSide.swift conference in London in 2025. 🙌 Sponsored by Broken Hands: https://www.brokenhands.io 🐥 Twitter: https://twitter.com/swiftserverconf 🐘 Mastodon:…

Matt Massicotte @massicotte.org · 2d

It started as a toy, but Empire has turned into the most complex package I've worked on. Macros, parameter packs, very tricky concurrency and generics. And now I'm looking at lifetimes and Span. Don't fully understand them yet, but I now get why it exists.

github.com/mattmassicot...

GitHub - mattmassicotte/Empire: A local persistence system for Swift

A local persistence system for Swift. Contribute to mattmassicotte/Empire development by creating an account on GitHub.

Matt Massicotte @massicotte.org · 2d

Ok right I am familiar with this approach. I was too focused on the word “state”, and I wasn’t thinking of these things as state, even though of course they can be stateful. Thanks for the clarification!

Reposted by Matt Massicotte

Adrian Eves @swifteves.bsky.social · 7d

I made Auralog because I was fed up with migraine apps full of forms and steps—the last thing I want when I’m in pain.

Effortlessly capture a migraine instantly—or later when you feel better.
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I’m taking my life back, and you can too.

OUT NOW
apps.apple.com/us/app/aural...

‎Auralog: Migraine Tracker

‎The effortless way to beat migraines. Zero effort logging. Maximum insight. Each migraine you track keeps the next one at bay. The smartest migraine app ever built. Auralog: Migraine Tracker helps y...

Reposted by Matt Massicotte

Will @will-lumley.bsky.social · 4d

🚀 New blog post!

AsyncCombine: Because Async Code Shouldn’t Be Ugly

I brought back Combine’s sink, assign, and CombineLatest - but built powered by Swift Concurrency.

Observing @Observable from another ViewModel shouldn’t be painful.

Here’s how I fixed it 👉 lumley.io/blogs/async-...

AsyncCombine: Because Async Code Shouldn’t Be Ugly

When Swift first introduced Combine, I loved it. The syntax was expressive, pipelines were easy to follow, and @Published made state changes feel almost magical. But as Apple pushed us toward Swift Co...

Matt Massicotte @massicotte.org · 6d

Something you might want to think about is that isolation (MainActor or otherwise) is a *constraint*. And you add it only because something is forcing you to. Unconstrained (ie non-Sendable) types are very powerful and flexible, but unfortunately they were also very difficult to use before 6.2.

Matt Massicotte @massicotte.org · 6d

Hmmm what you are describing I have never seen done anywhere else. I would be very interested to read more about these techniques!

Reposted by Matt Massicotte

Jeff Lewis @jefflewis.social · 6d

My team is hiring for someone to work alongside me doing lots of fun things with mobile apps. Don't get too warded off by the JS because we've got a lot of very modern Swift and Kotlin to write. #FediHire #swift

Matt Massicotte @massicotte.org · 6d

This is good!

One part gave me pause. “on a different thread or executor”. Different thread yes. But I don’t *think* a different executor is actually possible. It might be, but I don’t immediately see how. Is it?

Matt Massicotte @massicotte.org · 6d

Ohh huh! How does this work? It is aggregated? Are these reports tied to the user that submits them?

Matt Massicotte @massicotte.org · 6d

Thanks to a single comment in a talk on Xogot by @migueldeicaza.bsky.social, I have now learned about the “Pit of Success”. I think it is *possible* I will be thinking about this concept for the rest of my life.

Matt Massicotte @massicotte.org · 9d

Racism is rampant and I would expect no less, so while unsurprising it is still disappointing