#CoreData
Finally I had a time to work on my habit tracker App.
✅ Migrated from CoreData to SwiftData
✅ Added support for more than one habit
✅ updated calendar to move to the past
⚠️ broke widgets 😅 but those should be updated anyway
November 30, 2024 at 6:39 AM
The good:
- Simple, more intuitive than CoreData, IMO
- Has nice things like Observable, works nicely with SwiftUI

The bad:
- Some clunkiness not worked out like it thinks it supports [String], but CoreData doesn't, so you get some warnings. Or needing to pass through a container, I hope fixed soon
December 1, 2024 at 4:34 PM
PostgreSQL勉強中でノールックで書けないけどCoreDataより楽しい、ものが違うけど
September 6, 2025 at 11:19 PM
CoreDataがSQLiteのラッパーで
swiftDataがCoreDataのラッパー
という立ち位置ですね
April 4, 2026 at 8:07 AM
I used Xcode 27 and Codex/Claude to vibe code a native macOS app that turns any SQLite database, including CoreData, SwiftData and SQLiteData stores, into a clean, interactive entity-relationship diagram you can rearrange and export.
Free and open source

github.com/StewartLynch...
June 13, 2026 at 6:12 PM
#apps #mac #macOS #secrets

SecretBox 4 is available for macOS 13 and later versions. Completely rebuilt with Swift and CoreData.

www.elonovo.com
July 23, 2025 at 9:13 PM
📦 sabatier/coredata v1.0.1

Core Data is an Object graph and Persistence framework that enables the organization and manipulation of data from an entity-attribute relational model.

🔗 https://github.com/dantesabatier/CoreData
September 21, 2026 at 9:00 PM
The global leaderboard using CoreData and iCloud public database is working!
#buildinpublic
November 20, 2024 at 1:50 PM
It might have something to do with CoreData (or not). At least when trying to "Preview as app" in Xcode 27.0 all of my projects using CoreData are hanging while my one app without isn't. So frustrating. Worked prior to Xcode 27.0 with no problems and I have macOS screenshots to take. 😖
September 22, 2026 at 3:45 PM
I covered the hybrid use of CoreData and SwiftData and the conversion from CoreData to SwiftData in this article about Swift development. #Swift #SwiftData #CoreData #SwiftUI

backtosoftwaredevelopment.substack.com/p/converting...
Converting CoreData applications with lots of existing data to SwiftData
SwiftUI/CoreData/SwiftData
backtosoftwaredevelopment.substack.com
December 2, 2024 at 9:58 PM
Made great progress yesterday!

Adding iCloud sharing support with modern CoreData was a breeze. I even had time to add sharing status indicators for challenges.

Everything looks smooth and minimalistic.

#BuildInPublic
January 21, 2025 at 10:51 AM
so to avoid thinking about that I am now working with CoreData manual migrations 🤡🙃
December 27, 2024 at 6:21 PM
強制終了とかバグでモードレス保存に失敗したことを検知しようとしてる

UserDefaultsに書き込んだupdateAt > CoreData上の一番大きいupdatedAtだった場合に不整合にしてみてる
July 18, 2026 at 1:09 PM
“Only 7 per cent of respondents said co-governance worried them, while 37 per cent “completely” support it and 51 per cent “somewhat” support it.”

Survey results from CoreData, released late last month show how little support there is for the fear-mongering from race-baiters.
Simon Wilson: Political panic and the co-governance debate
OPINION: Co-governance doesn't work the way fear-mongering politicians want us to believe.
www.nzherald.co.nz
October 9, 2023 at 7:50 PM
A donation without a DM, so I pick the topic 😈

SwiftUI this, UIKit that. Why aren’t we having the NSUserDefaults vs. CoreData discussion. Who needs a whole ass database when you can just have key value storage? *slaps lid* You can stuff a whole blob in one of these babies.
December 6, 2024 at 1:32 AM
SwiftUI Previews with #CoreData is easier than ever thanks to the new PreviewModifier protocol introduced at this year's WWDC.

I've mistakenly always thought it would only work for #SwiftData but it turns out it's perfectly fine for Core Data too! 😀
December 20, 2024 at 2:30 PM
When working with firebase as your backend, do you still use CoreData for persistence or let fireside do it?
September 30, 2025 at 3:45 AM
CoreData/SwiftData projects on TestFlight store data in production by default. Developers can switch to development by changing com.apple.developer.icloud-container-environment in Entitlements.plist.
fatbobman.com/en/snippet/...
March 25, 2025 at 1:13 PM
ラッパーあまり好きじゃなかったけど、CoreDataはSQLiteをリアクティブにUIに高効率に反映してくれてそうだから頭が上がらなくなった
April 4, 2026 at 7:57 AM
You can add attributes in one liners, like @Attribute(.unique) for unique titles, or .required, etc. Pretty slick.

You also don't have to save like in CoreData, to make context write to the container (I do anyways, it's pretty simple, just a context.save() to be safe.
December 1, 2024 at 4:34 PM
Lots of people have struggled to understand the behavior of SwiftData's ModelActor. I had the chance to look into it!

(And also get to use it as an excuse to get into isolated parameters and the sending keyword.)

www.massicotte.org/model-actor
ModelActor is Just Weird
I actually don’t get too many questions about SwiftData or CoreData. And thank goodness, because I’m not particularly familiar with either. That is, until just recently! I had the chance to work with ...
www.massicotte.org
March 22, 2025 at 12:17 PM
バックグラウンドでCoreData同期してローカル通知の更新とかできたらできることが広がるはず
February 20, 2026 at 2:51 PM
"Geopolitics is now the top economic threat to asset owners, according to a Natixis IM and CoreData survey of 515 super funds, insurers, foundations, endowments, central banks and sovereign wealth funds managing a collective AU$46 trillion."

(investmentmagazine.com.au)

#TheyreWrong
#collapse
November 26, 2025 at 8:59 PM
CoreDataやればやるほどわからなくなりもう永遠にわからんと思う
March 1, 2026 at 5:50 PM