alex pretzlav

@pretz.bsky.social

Cooking, kids, bikes, video games. Oakland, CA iOS @ Patreon, prev Twitter, Periscope, Yelp. he/him https://pretzlav.com/ https://mastodon.social/@pretz

A stop sign with a yellow sign below it that says “CROSS TRAFFIC DOES NOT STOP” and in smaller text “pretty unsafe for a bikeway, yeah? Someone make a petition or something “

The inside of an open Steam Deck showing all its internal components on a desk next to an iFixit screwdriver set

class MyClass {
private var state = 0

func someAsyncFunction(isolation: isolated (any Actor)? = #isolation) async {
print("my state is:", state)
}

func doAsyncFunctionLater(isolation: isolated (any Actor)? = #isolation) {
// Do some sync work first, then:
Task {
await someAsyncFunction()
}
}
}

An errror is indicated on the line for "Task {":
"Passing closure as a 'sending' parameter risks causing data races between 'isolation'-isolated code and concurrent execution of the closure. Closure captures 'isolation'-isolated 'self'"

$final class SendableClass: Sendable { let data: String? @MainActor lazy var dataView: UIView = UIView() init(data: String?) { self.data = data } } An error message appears on top of the code: "Stored property '$__lazy_storage_$_dataView' of 'Sendable'-conforming class 'SendableClass' is mutable"$