iOS temporary folder location

iOS 9 or later • Swift 3 or later

let tmpDirURL = URL(fileURLWithPath: NSTemporaryDirectory())

iOS 10.0+Beta, macOS 10.12+, tvOS 10.0+Beta & watchOS 3.0+ • Xcode 8 • Swift 3 or later

let tmpDirURL = FileManager.default.temporaryDirectory