var timeInterval : TimeInterval
The value of this time interval, in seconds.
var magnitude: TimeInterval
The value of this time interval, in seconds.
typealias OperationQueue.SchedulerTimeType.Stride.Magnitude
A type that represents the absolute value of any possible value of the conforming type.
func negate()
Replaces this value with its additive inverse.
この値をそれの反数と置き換えます。