See also generics in Swift, variadics in Swift Swift Evolution SE-0393: Value and Type Parameter Packs SE-0398: Allow Generic Types to Abstract Over Packs Swift.org - Iterate Over Parameter Packs in Swift 6.0 Deep Dives Value and Type Parameter Packs in Swift | by Andy Kolean | Medium Hacking with Swift: Value and Type Parameter Packs – available from Swift 5.9