为 Swift 开发者提供的简单高分辨率时间戳，以及有用的工具来处理它们。
通过 Swift Package Manager 安装，方法是在您的 Package.swift 中将 Nanoseconds 声明为依赖项
.package(url: "https://github.com/dominicegginton/Nanoseconds", from: "1.0.0")
记得将 Nanoseconds 作为依赖项添加到您的目标中。
import Foundation
import Nanoseconds
let start = Now()
sleep(1)
let end = Now()
let duration = end - start
print(duration) //=> 1004222113.0
/**
A type that represents a point in time with nanosecond precision.
*/
public struct Now {
/**
Creates a new `Now` instance.
*/
public init()
/**
Compares two `Now` instances.
- Parameters:
- lhs: The first `Now` instance.
- rhs: The second `Now` instance.
- Returns: `true` if the first `Now` instance is less than the second `Now` instance.
*/
public static func < (lhs: Now, rhs: Now) -> Bool
/**
Compares two `Now` instances.
- Parameters:
- lhs: The first `Now` instance.
- rhs: The second `Now` instance.
- Returns: `true` if the first `Now` instance is less than or equal to the second `Now` instance.
*/
public static func <= (lhs: Now, rhs: Now) -> Bool
/**
Compares two `Now` instances.
- Parameters:
- lhs: The first `Now` instance.
- rhs: The second `Now` instance.
- Returns: `true` if the first `Now` instance is greater than the second `Now` instance.
*/
public static func > (lhs: Now, rhs: Now) -> Bool
/**
Compares two `Now` instances.
- Parameters:
- lhs: The first `Now` instance.
- rhs: The second `Now` instance.
- Returns: `true` if the first `Now` instance is greater than or equal to the second `Now` instance.
*/
public static func >= (lhs: Now, rhs: Now) -> Bool
/**
Compares two `Now` instances.
- Parameters:
- lhs: The first `Now` instance.
- rhs: The second `Now` instance.
- Returns: `true` if the first `Now` instance is equal to the second `Now` instance.
*/
public static func == (lhs: Now, rhs: Now) -> Bool
/**
Compares two `Now` instances.
- Parameters:
- lhs: The first `Now` instance.
- rhs: The second `Now` instance.
- Returns: `true` if the first `Now` instance is not equal to the second `Now` instance.
*/
public static func != (lhs: Now, rhs: Now) -> Bool
/**
Subtract a `Now` instance from another `Now` instance.
- Parameters:
- lhs: The first `Now` instance.
- rhs: The second `Now` instance.
- Returns: The difference between the two `Now` instances.
*/
public static func - (lhs: Now, rhs: Now) -> TimeInterval
/**
Add a `Now` instance to another `Now` instance.
- Parameters:
- lhs: The first `Now` instance.
- rhs: The second `Now` instance.
- Returns: The sum of the two `Now` instances.
*/
public static func + (lhs: Now, rhs: Now) -> TimeInterval
}
extension TimeInterval {
/**
Creates a new `TimeInterval` from the given number of nanoseconds.
- Parameter nanoseconds: The number of nanoseconds.
*/
public init (nanoseconds: Double)
/**
Creates a new `TimeInterval` from the given number of microseconds.
- Parameter microseconds: The number of microseconds.
*/
public init (microseconds: Double)
/**
Creates a new `TimeInterval` from the given number of milliseconds.
- Parameter milliseconds: The number of milliseconds.
*/
public init (milliseconds: Double)
/**
Creates a new `TimeInterval` from the given number of seconds.
- Parameter seconds: The number of seconds.
*/
public init (seconds: Double)
/**
Creates a new `TimeInterval` from the given number of minutes.
- Parameter minutes: The number of minutes.
*/
public init (minutes: Double)
/**
Creates a new `TimeInterval` from the given number of hours.
- Parameter hours: The number of hours.
*/
public init (hours: Double)
/**
The number of nanoseconds in the `TimeInterval`.
*/
public var nanoseconds: Double
/**
The number of microseconds in the `TimeInterval`.
*/
public var microseconds: Double
/**
The number of milliseconds in the `TimeInterval`.
*/
public var milliseconds: Double
/**
The number of seconds in the `TimeInterval`.
*/
public var seconds: Double
/**
The number of minutes in the `TimeInterval`.
*/
public var minutes: Double
/**
The number of hours in the `TimeInterval`.
*/
public var hours: Double
/**
Covert the `TimeInterval` to a string.
The string will be in the format `[h]h [m]m [s]s`.
Only the largest unit of time will be displayed.
*/
public var timeString: String
}