Harlan Haskins

@harlan
2.4K Followers
272 Following
347 Posts
Lead engineer at https://typo.inc • Prev: visionOS at Apple. He/him.
Show threadHarlan Haskins4d ago
@endocrimes That cane work is magnificent, very well done!
Show threadHarlan Haskins5d ago
@twostraws shouldn't it be "memoisation"? 🇬🇧
Harlan HaskinsMar 13
My favorite Swift footgun: https://github.com/swiftlang/swift-testing/pull/1626
Fix unintentionally-quadratic COW copies on insertion by harlanhaskins · Pull Request #1626 · swiftlang/swift-testing

This fixes an accidentally-quadratic COW copy of a subgraph whenever an item is inserted. Motivation: For large Swift Testing test suites with many parameterized test cases, we accidentally tripped...

GitHub
Show threadHarlan HaskinsDec 11
@piyuv Not if you save the Task to cancel it later, which is the case in my experience for most long-running tasks that await over async sequences
Harlan HaskinsDec 11
I think the fact that Task closures don't require explicit self is a huge footgun :(
Show threadHarlan HaskinsSep 23
@mergesort you can install it with Poob. it's available on Poob. there's a Poobtrain with it. Just point your Poob manifest at the Poobtrain.
Harlan HaskinsSep 15, 2025
the swift forum today has me saying "swift 7" like a Gen Alpha kid
Show threadHarlan HaskinsSep 5, 2025
@regehr they're challenging the notion that the class has a static single assignment
Show threadHarlan HaskinsAug 21, 2025
@noah
Show threadHarlan HaskinsAug 18, 2025
@sommer The dream!! Congratulations!