initialize(from:count:)
Initializes the memory referenced by this pointer with the values starting at the given pointer.
func initialize(from source: UnsafePointer<Pointee>, count: Int)
Parameters
The region of memory starting at this pointer and covering count
instances of the pointer’s Pointee
type must be uninitialized or Pointee
must be a trivial type. After calling initialize(from:count:)
, the region is initialized.