Array.init(repeating:count:) Gotcha

[SDGGiesbrecht (Jeremy David Giesbrecht)]

Why does Array.init(repeating:count:) refer to the same instance of a struct?

The documentation for Array.init(repeating:count:) says (emphasis mine): Creates a new array containing the specified number of a single, repeated value. Structs are value types, hence it seems reasonable to expect that passing an instance of a struct to repeating: creates as many instances of the struct as count specifies. However, as in the code below, that's not the case, and printing out the addresses of elements reveals that the array somehow contains the same struct instance. struct …