Topics tagged existential

Topic	Replies	Views	Activity
Is there a difference between using `any` and `some` if I'm assigning the value to an existential type in the end anyway? Using Swift generics , existential	12	558	July 2, 2026
Why wrapping optional existential in parenthesis? Using Swift existential	8	628	June 9, 2026
Swift-frontend crash switching over (any Error)? Using Swift bug , optional , crash , existential	4	167	February 11, 2026
Coercing `any` into `some` Using Swift generics , any , existential , some-keyword	1	245	January 19, 2026
Magic of hiding the type Using Swift optional , existential	3	384	January 2, 2026
Is there a way to convert between an existential type and the existential metatype of the same protocol, statically? Using Swift protocols , metatype , existential	2	354	September 1, 2025
How to correctly open existential of an `any` type so its @ViewBuilder function can be run in `body` of a View? Using Swift generics , swiftui , existential	14	879	July 10, 2025
Where is the line between using an existential vs generic? Using Swift generics , opaque-types , existential	12	924	March 13, 2025
Using inout with exitential type: is it a supported feature? Using Swift existential	1	205	March 10, 2025
Relative Performance of Existential Any Using Swift existential	20	1245	February 12, 2025
Different returned type when using some vs any in function signature on a view Using Swift generics , swiftui , opaque-types , existential , sil	1	247	February 7, 2025
Avoiding existentials for a known set of types in Embedded Swift Using Swift protocols , embedded , existential	5	314	January 14, 2025
Checking equality of key paths not working as I expected Using Swift collection , keypaths , equality , existential , equatable	2	202	December 13, 2024
Sequence is not a protocol? Using Swift existential , sequence	1	215	October 31, 2024
Error when passing closure with any Shape to a function expecting some Shape Using Swift opaque-types , existential	5	308	October 26, 2024
Custom AnyXYZ with implicit casting (like AnyHashable) Using Swift hashable , any , dictionary , existential , anyhashable	8	276	September 16, 2024
Understanding the "cast from 'any P' to unrelated type 'S' always fails" warning Using Swift existential	5	1521	August 13, 2024
Swift 6 failing to implicitly open existentials? Using Swift metatype , existential	2	327	July 16, 2024
Is `_openExistential` still a legit strategy for opening `Any.Type` for Swift 5.X? Using Swift metatype , existential	2	2642	June 25, 2024
Should using ImplicitOpenExistentials with Swift 5.10 work? Using Swift existential	6	594	May 8, 2024
When is `any` mandatory when creating a variable conforming to a protocol Using Swift existential	5	1928	April 16, 2024
Why Is Covariant Self more flexible on protocols than classes? Using Swift extensions , protocols , associatedtype , existential	39	1520	April 15, 2024
Enforce any existential to have a value conforming to a certain protocol Using Swift generics , protocols , existential	0	361	February 3, 2024
Advice Needed for Making Use of Generics/Opaques/Existentials Using Swift generics , opaque-types , existential , protocol-inheritance	2	463	January 29, 2024
AnyCodable Efficacy Using Swift codable , type-erasure , existential , serialization	10	7258	December 22, 2023
Protocol Types Cannot Conform to Protocols Discussion protocols , existential	3	769	November 30, 2023
Implicitly opening existential with a generic struct initializer Using Swift generics , existential	2	961	November 1, 2023
[SE-0353] constrained existential types behavior Discussion associatedtype , existential	4	815	August 23, 2023
ObservedObject with existential types Using Swift swiftui , existential	2	891	July 24, 2023
A duck story Using Swift protocols , existential	17	1098	July 18, 2023