Topics tagged existential

Topic	Replies	Views	Activity
Coercing `any` into `some` Using Swift generics , any , existential , some-keyword	1	174	January 19, 2026
Magic of hiding the type Using Swift optional , existential	3	303	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	3	239	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	15	587	July 10, 2025
Where is the line between using an existential vs generic? Using Swift generics , opaque-types , existential	12	799	March 13, 2025
Using inout with exitential type: is it a supported feature? Using Swift existential	1	172	March 10, 2025
Relative Performance of Existential Any Using Swift existential	24	1032	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	200	February 7, 2025
Avoiding existentials for a known set of types in Embedded Swift Using Swift protocols , embedded , existential	5	265	January 14, 2025
Checking equality of key paths not working as I expected Using Swift collection , keypaths , equality , existential , equatable	2	149	December 13, 2024
Sequence is not a protocol? Using Swift existential , sequence	1	184	October 31, 2024
Error when passing closure with any Shape to a function expecting some Shape Using Swift opaque-types , existential	5	244	October 26, 2024
Custom AnyXYZ with implicit casting (like AnyHashable) Using Swift hashable , any , dictionary , existential , anyhashable	8	191	September 16, 2024
Why wrapping optional existential in parenthesis? Using Swift existential	7	469	August 18, 2024
Understanding the "cast from 'any P' to unrelated type 'S' always fails" warning Using Swift existential	5	1424	August 13, 2024
Swift 6 failing to implicitly open existentials? Using Swift metatype , existential	2	239	July 16, 2024
Is `_openExistential` still a legit strategy for opening `Any.Type` for Swift 5.X? Using Swift metatype , existential	2	1189	June 25, 2024
Should using ImplicitOpenExistentials with Swift 5.10 work? Using Swift existential	6	510	May 8, 2024
When is `any` mandatory when creating a variable conforming to a protocol Using Swift existential	5	1744	April 16, 2024
Why Is Covariant Self more flexible on protocols than classes? Using Swift extensions , protocols , associatedtype , existential	39	1343	April 15, 2024
Enforce any existential to have a value conforming to a certain protocol Using Swift generics , protocols , existential	0	332	February 3, 2024
Advice Needed for Making Use of Generics/Opaques/Existentials Using Swift generics , opaque-types , existential , protocol-inheritance	2	429	January 29, 2024
AnyCodable Efficacy Using Swift codable , type-erasure , existential , serialization	10	6974	December 22, 2023
Protocol Types Cannot Conform to Protocols Discussion protocols , existential	3	701	November 30, 2023
Implicitly opening existential with a generic struct initializer Using Swift generics , existential	2	874	November 1, 2023
[SE-0353] constrained existential types behavior Discussion associatedtype , existential	4	773	August 23, 2023
ObservedObject with existential types Using Swift swiftui , existential	2	848	July 24, 2023
A duck story Using Swift protocols , existential	17	972	July 18, 2023
Enforcing Protocol Conformance for Existential Types at Compiletime or Runtime Using Swift generics , protocols , existential	0	545	July 18, 2023
Understanding the error "Type 'any Thing' cannot conform to 'Thing'" Using Swift generics , existential	7	12691	June 2, 2023