Instance Property
duration
iOS 10.0+
iPadOS 10.0+
Mac Catalyst 10.0+
macOS 10.12+
tvOS 10.0+
watchOS 3.0+
The duration.
var duration: TimeInterval { get set }Discussion
Precondition
duration >= 0
Instance Property
var duration: TimeInterval { get set }Precondition
duration >= 0