NotificationCenter’s old observation APIs take @Sendable closures because they can be executed on any thread that posts the message.
But @Sendable closures make very basic operations, like mutating your app’s state, quite difficult to do.
Learn more: www.pointfree.co/episodes/ep3...
But @Sendable closures make very basic operations, like mutating your app’s state, quite difficult to do.
Learn more: www.pointfree.co/episodes/ep3...
November 5, 2026 at 7:13 PM
NotificationCenter’s old observation APIs take @Sendable closures because they can be executed on any thread that posts the message.
But @Sendable closures make very basic operations, like mutating your app’s state, quite difficult to do.
Learn more: www.pointfree.co/episodes/ep3...
But @Sendable closures make very basic operations, like mutating your app’s state, quite difficult to do.
Learn more: www.pointfree.co/episodes/ep3...
A clear overview of async communication patterns in Swift from delegates and closures to Combine, @Observable, and AsyncStreams by Khoa Pham:
go.peterfriese.dev/swift-how-t...
go.peterfriese.dev/swift-how-t...
How to use communication pattern in Swift | Swift Discovery
Issue #1071
Sooner or later one object needs to tell others that something happened. A music player starts a new track, a download finishes, the network drops. Swift gives us many ways to send that message, and picking the right one depends mostly on one question: how many listeners are there?
All examples below use a small Player that wants to announce PlayerEvent values.
swift
Copy
enum PlayerEvent: Sendable {
case started(trackId: String)
case paused
case finished
}
One listener: delegation and closures
Delegation is the classic UIKit way. The player holds a weak reference to one delegate and calls it.
go.peterfriese.dev
November 4, 2026 at 6:41 PM
A clear overview of async communication patterns in Swift from delegates and closures to Combine, @Observable, and AsyncStreams by Khoa Pham:
go.peterfriese.dev/swift-how-t...
go.peterfriese.dev/swift-how-t...
pov ur high af on finch app
![screenshot from finch self care app: a reflection question pops up and asks: how does if feel to send good vibes to Space?
[Space is the name of a friend in the app & 'good vibes' are an interactive, sendable feature]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:yvmmzogycighocmvkcfab7pm/bafkreifytsczdj2pcm3px7d5y7yk3by5r2g5cuf7ijvgsswxaowzklgoby)
October 28, 2026 at 4:15 AM
pov ur high af on finch app
@willdot.net and uhhh.. that's actually a weird oddity of the PDS, as soon as you request an email change, the email column on the account's table is actually changed, instead of going into a pending_email column, so you loose the "confirmed sendable email" for the account the moment you attempt
October 27, 2026 at 7:12 PM
@willdot.net and uhhh.. that's actually a weird oddity of the PDS, as soon as you request an email change, the email column on the account's table is actually changed, instead of going into a pending_email column, so you loose the "confirmed sendable email" for the account the moment you attempt
Slopjective-C 3.0 is fuckin cruising. We've got borrowed-pointer CFG provenance analysis, sendable transfer checking, actor isolation across await, typed key-path identity, 67 other things. github.com/doublemover/...
October 28, 2026 at 1:21 PM
Slopjective-C 3.0 is fuckin cruising. We've got borrowed-pointer CFG provenance analysis, sendable transfer checking, actor isolation across await, typed key-path identity, 67 other things. github.com/doublemover/...
Slopjective-C 3.0 is fuckin cruising. We've got borrowed-pointer CFG provenance analysis, sendable transfer checking, actor isolation across await, typed key-path identity, 67 other things. github.com/doublemover/...
October 28, 2026 at 1:21 PM
Slopjective-C 3.0 is fuckin cruising. We've got borrowed-pointer CFG provenance analysis, sendable transfer checking, actor isolation across await, typed key-path identity, 67 other things. github.com/doublemover/...
clash collection vol 2 issss 3 songs from being sendable to the giftees :D then will give my ears a break and come back to do the final mixes after hypnovember music project...
i HAVE gotten faster composing and arranging music even though it doesnt feel like it to me. the lowest time to […]
i HAVE gotten faster composing and arranging music even though it doesnt feel like it to me. the lowest time to […]
Original post on blorbo.social
blorbo.social
October 26, 2026 at 2:11 AM
clash collection vol 2 issss 3 songs from being sendable to the giftees :D then will give my ears a break and come back to do the final mixes after hypnovember music project...
i HAVE gotten faster composing and arranging music even though it doesnt feel like it to me. the lowest time to […]
i HAVE gotten faster composing and arranging music even though it doesnt feel like it to me. the lowest time to […]
"The scope is genuinely larger than anything else in the Objective-C ecosystem — GNUstep isn't doing this, Apple isn't doing this, and the design borrows intelligently from Rust (borrowing) and Swift (actors, Sendable) while keeping the Objective-C runtime and message semantics."
October 24, 2026 at 7:36 PM
"The scope is genuinely larger than anything else in the Objective-C ecosystem — GNUstep isn't doing this, Apple isn't doing this, and the design borrows intelligently from Rust (borrowing) and Swift (actors, Sendable) while keeping the Objective-C runtime and message semantics."
As long as I can see you in them UwU. (Also maybe the socks. They're envelope sendable)
October 22, 2026 at 4:38 PM
As long as I can see you in them UwU. (Also maybe the socks. They're envelope sendable)
Amy Grant - Jesu, Joy Of Man's Desiring (Visualizer)
YouTube video by AmyGrantVEVO
youtu.be
October 17, 2026 at 12:08 AM
Surprised this message went through, I assumed it wasn't sendable.
October 14, 2026 at 9:17 PM
Surprised this message went through, I assumed it wasn't sendable.
Here is your updated list of iOS, Swift, and AI conferences for 2026!
I'll be at DevFest Hamburg this week - if you see me there, come say hi (I might have some Firebase swag with me 🧦 🔥):
go.peterfriese.dev/conferences...
I'll be at DevFest Hamburg this week - if you see me there, come say hi (I might have some Firebase swag with me 🧦 🔥):
go.peterfriese.dev/conferences...
Not only Swift - Issue #100
Celebrating 100 issues of Not only Swift! Featuring FlowDeck Studio, agentic iOS delivery pipelines, Sendable closures, adaptive SwiftUI toolbars, WhatCable USB-C diagnostics, and 2026/2027 iOS conferences.
peterfriese.dev
October 15, 2026 at 9:30 AM
Here is your updated list of iOS, Swift, and AI conferences for 2026!
I'll be at DevFest Hamburg this week - if you see me there, come say hi (I might have some Firebase swag with me 🧦 🔥):
go.peterfriese.dev/conferences...
I'll be at DevFest Hamburg this week - if you see me there, come say hi (I might have some Firebase swag with me 🧦 🔥):
go.peterfriese.dev/conferences...
Swift Sendable Explained - Compile Time Data Race Prevention in Swift Concurrency
www.patreon.com/iOSjobs/post...
www.patreon.com/iOSjobs/post...
Swift Sendable Explained - Compile Time Data Race Prevention in Swift Concurrency | iOS (Swift) jobs
Sendable helps Swift prevent data races at compile time by ensuring values can safely cross concurrency boundaries. The article explains how
www.patreon.com
October 13, 2026 at 9:41 AM
Swift Sendable Explained - Compile Time Data Race Prevention in Swift Concurrency
www.patreon.com/iOSjobs/post...
www.patreon.com/iOSjobs/post...
October 13, 2026 at 3:28 AM
Hmm starting to feel like this whole "non-Sendable" thing is catching on. I like it.
October 6, 2026 at 10:47 AM
Hmm starting to feel like this whole "non-Sendable" thing is catching on. I like it.
Oh the new WIP HTTP APIs have very few Sendable types 💪
October 6, 2026 at 2:02 PM
Oh the new WIP HTTP APIs have very few Sendable types 💪
Here's other stuff I would like for my birthday. No, I do not know how to make the JetPens one into a sendable thing and my desire for a new sketchbook I don't feel a need to be perfect in is rising...
My birthday's coming up in October. Wanna gift me stuff? Here's my wishlists!
bookshop.org/wishlists/e1...
www.jetpens.com/wishlist?wis...
www.amazon.com/hz/wishlist/...
Would also love giftcards for:
- Kobo
- Buff Chicks Supplements
Or donate to mutual aid or support some artists. Go. Do it!
bookshop.org/wishlists/e1...
www.jetpens.com/wishlist?wis...
www.amazon.com/hz/wishlist/...
Would also love giftcards for:
- Kobo
- Buff Chicks Supplements
Or donate to mutual aid or support some artists. Go. Do it!
October 7, 2026 at 1:31 AM
Here's other stuff I would like for my birthday. No, I do not know how to make the JetPens one into a sendable thing and my desire for a new sketchbook I don't feel a need to be perfect in is rising...
Transcript first, or something you can forward?
After a call, what do you reach for first: full transcript, action items, or a sendable summary?
The help page shows how to make your own template:
meetingdebrief.com/help/summari...
After a call, what do you reach for first: full transcript, action items, or a sendable summary?
The help page shows how to make your own template:
meetingdebrief.com/help/summari...
October 7, 2026 at 7:10 AM
Transcript first, or something you can forward?
After a call, what do you reach for first: full transcript, action items, or a sendable summary?
The help page shows how to make your own template:
meetingdebrief.com/help/summari...
After a call, what do you reach for first: full transcript, action items, or a sendable summary?
The help page shows how to make your own template:
meetingdebrief.com/help/summari...
Planning your developer conference travel for late 2026?
Check out my updated curated list of upcoming iOS, Swift, and AI conferences.
go.peterfriese.dev/conferences...
Check out my updated curated list of upcoming iOS, Swift, and AI conferences.
go.peterfriese.dev/conferences...
Not only Swift - Issue #100
Celebrating 100 issues of Not only Swift! Featuring FlowDeck Studio, agentic iOS delivery pipelines, Sendable closures, adaptive SwiftUI toolbars, WhatCable USB-C diagnostics, and 2026/2027 iOS conferences.
peterfriese.dev
October 4, 2026 at 8:00 AM
Planning your developer conference travel for late 2026?
Check out my updated curated list of upcoming iOS, Swift, and AI conferences.
go.peterfriese.dev/conferences...
Check out my updated curated list of upcoming iOS, Swift, and AI conferences.
go.peterfriese.dev/conferences...
Our code is at an impasse: we want to embrace non-sendability, but async work seems to force us into Sendable. We’ll revisit our approach to this problem from ComposableArchitecture 1.0, see why it's not ideal, and search for a better way.
www.pointfree.co/episodes/ep3...
www.pointfree.co/episodes/ep3...
September 28, 2026 at 4:15 PM
Our code is at an impasse: we want to embrace non-sendability, but async work seems to force us into Sendable. We’ll revisit our approach to this problem from ComposableArchitecture 1.0, see why it's not ideal, and search for a better way.
www.pointfree.co/episodes/ep3...
www.pointfree.co/episodes/ep3...
Xcodeに怒られないためだけにFixをぽちぽちとSendableや@MainActorをつけていたのですが、データ競合をどうすると防げるのかがわかりやすく勉強になりました
クイズ形式でダメなパターンの理解が深まり、これからはXcodeに怒られなくて済みそうです
ありがとうございました🙇♀️
クイズ形式でダメなパターンの理解が深まり、これからはXcodeに怒られなくて済みそうです
ありがとうございました🙇♀️
みんなのもやもやを吹き飛ばす Swift Concurrency に参加を申し込みました！ ios-torikoboshi.connpass.com/event/407847...
みんなのもやもやを吹き飛ばす Swift Concurrency (2026/09/25 20:00〜)
# みんなのもやもやを吹き飛ばす Swift Concurrency 「async/await は書けるけど、Sendable のエラーがよく分からない」 「actor と MainActor の違いをうまく説明できない」 「とりあえず @MainActor を付けたらビルドが通った……」 そんなもやもやを、図を使いながらほどいていく勉強会です。 ## この勉強会で話すこと Swift C...
ios-torikoboshi.connpass.com
September 25, 2026 at 12:14 PM
Xcodeに怒られないためだけにFixをぽちぽちとSendableや@MainActorをつけていたのですが、データ競合をどうすると防げるのかがわかりやすく勉強になりました
クイズ形式でダメなパターンの理解が深まり、これからはXcodeに怒られなくて済みそうです
ありがとうございました🙇♀️
クイズ形式でダメなパターンの理解が深まり、これからはXcodeに怒られなくて済みそうです
ありがとうございました🙇♀️
CoinPay Wallet 0.11.0: USDC on Base is sendable.
The balance showed and priced fine. There was just no Send button and no Base listed.
USDT broadcasts now too. It used to be quoted, prepared, signed, then refused.
https://github.com/profullstack/coinpayportal/releases/tag/extension-v0.11.0
The balance showed and priced fine. There was just no Send button and no Base listed.
USDT broadcasts now too. It used to be quoted, prepared, signed, then refused.
https://github.com/profullstack/coinpayportal/releases/tag/extension-v0.11.0
September 24, 2026 at 6:44 PM
CoinPay Wallet 0.11.0: USDC on Base is sendable.
The balance showed and priced fine. There was just no Send button and no Base listed.
USDT broadcasts now too. It used to be quoted, prepared, signed, then refused.
https://github.com/profullstack/coinpayportal/releases/tag/extension-v0.11.0
The balance showed and priced fine. There was just no Send button and no Base listed.
USDT broadcasts now too. It used to be quoted, prepared, signed, then refused.
https://github.com/profullstack/coinpayportal/releases/tag/extension-v0.11.0
みんなのもやもやを吹き飛ばす Swift Concurrency に参加を申し込みました！ ios-torikoboshi.connpass.com/event/407847...
みんなのもやもやを吹き飛ばす Swift Concurrency (2026/09/25 20:00〜)
# みんなのもやもやを吹き飛ばす Swift Concurrency 「async/await は書けるけど、Sendable のエラーがよく分からない」 「actor と MainActor の違いをうまく説明できない」 「とりあえず @MainActor を付けたらビルドが通った……」 そんなもやもやを、図を使いながらほどいていく勉強会です。 ## この勉強会で話すこと Swift C...
ios-torikoboshi.connpass.com
September 24, 2026 at 3:05 PM
みんなのもやもやを吹き飛ばす Swift Concurrency に参加を申し込みました！ ios-torikoboshi.connpass.com/event/407847...
突然ですが久々に明日の夜にSwiftConcurrencyの解説をDiscordでやります
どこも登壇させてくれそうにないから自分でやるスタイル！
20時から！
ios-torikoboshi.connpass.com/event/407847/
どこも登壇させてくれそうにないから自分でやるスタイル！
20時から！
ios-torikoboshi.connpass.com/event/407847/
みんなのもやもやを吹き飛ばす Swift Concurrency (2026/09/25 20:00〜)
# みんなのもやもやを吹き飛ばす Swift Concurrency 「async/await は書けるけど、Sendable のエラーがよく分からない」 「actor と MainActor の違いをうまく説明できない」 「とりあえず @MainActor を付けたらビルドが通った……」 そんなもやもやを、図を使いながらほどいていく勉強会です。 ## この勉強会で話すこと Swift C...
ios-torikoboshi.connpass.com
September 24, 2026 at 1:55 PM
突然ですが久々に明日の夜にSwiftConcurrencyの解説をDiscordでやります
どこも登壇させてくれそうにないから自分でやるスタイル！
20時から！
ios-torikoboshi.connpass.com/event/407847/
どこも登壇させてくれそうにないから自分でやるスタイル！
20時から！
ios-torikoboshi.connpass.com/event/407847/
We’ve started a new series: Designing for Isolation
Learn how designing for isolation from the beginning lets you embrace non-Sendable types, maintain thread safety, and keep asynchrony from infecting every corner of your codebase.
Follow along here: www.pointfree.co/collections/...
Learn how designing for isolation from the beginning lets you embrace non-Sendable types, maintain thread safety, and keep asynchrony from infecting every corner of your codebase.
Follow along here: www.pointfree.co/collections/...
September 23, 2026 at 2:47 PM
We’ve started a new series: Designing for Isolation
Learn how designing for isolation from the beginning lets you embrace non-Sendable types, maintain thread safety, and keep asynchrony from infecting every corner of your codebase.
Follow along here: www.pointfree.co/collections/...
Learn how designing for isolation from the beginning lets you embrace non-Sendable types, maintain thread safety, and keep asynchrony from infecting every corner of your codebase.
Follow along here: www.pointfree.co/collections/...