How can I convert an array to a tuple?

It's actually quite possible, if you are willing to do some low level magic. I don't think it works if the tuple has a collection type, though. This is mainly for interacting with C libraries.

typealias TupleType = (UInt8, UInt8, UInt8)var array = [2, 3, 4] as [UInt8]var tuple = UnsafeMutablePointer<StepsType>(malloc(UInt(sizeof(TupleType))))memcpy(tuple, array, UInt(array.count))

More of this stuff can be found here:https://codereview.stackexchange.com/questions/84476/array-to-tuple-in-swift/84528#84528

Because 70% of us are highly visual beings:

You can't do this because the size of a tuple is part of its type, and this isn't true for an array. If you know the array's length, you can just do let myTuple = (myArray[0], myArray[1], ...). Or you can build your architecture around tuples from the beginning. What are you trying to do?

This is a common problem which occurs in lots of other languages. See How do I convert a list to a tuple in Haskell?

if what you want to do is extract multiple value from array at the same time, maybe the following code could help you

extension Array {    func splat() -> (Element,Element) {        return (self[0],self[1])    }    func splat() -> (Element,Element,Element) {        return (self[0],self[1],self[2])    }    func splat() -> (Element,Element,Element,Element) {        return (self[0],self[1],self[2],self[3])    }    func splat() -> (Element,Element,Element,Element,Element) {        return (self[0],self[1],self[2],self[3],self[4])    }}

then you can use it like this

  let (first,_,third) = ( 0..<20 ).map { $0 }.splat()

you can even write a codegen to generate the extension code