# TimeIntervals1.0.1

 TestsTested ✓ LangLanguage SwiftSwift License MIT ReleasedLast Release May 2019 SPMSupports SPM ✓

Maintained by Oleg Dreyman.

# Time

This micro-library is made for you if:

• You have ever written something like this:
`let interval: TimeInterval = 10 * 60`

To represent 10 minutes.

## Usage

#### Showcase

```import Time

let tenMinutes = 10.minutes
let afterTenMinutes = Date() + 10.minutes
let tenMinutesAndSome = 10.minutes + 15.seconds
let tenMinutesInSeconds = 10.minutes.inSeconds
if 10.minutes > 500.seconds {
print("That's right")
}```

#### Basics

Time is not just a bunch of `Double` conversion functions. The main advantage of it is that all time units are strongly-typed. So, for example:

`let tenMinutes = 10.minutes`

Here `tenMinutes` will actually be of type `Interval<Minute>` (not to be confused with Foundation's `TimeInterval`). There are seven time units available, from nanoseconds to days:

```public extension Double {

var seconds: Interval<Second> {
return Interval<Second>(self)
}

var minutes: Interval<Minute> {
return Interval<Minute>(self)
}

var milliseconds: Interval<Millisecond> {
return Interval<Millisecond>(self)
}

var microseconds: Interval<Microsecond> {
return Interval<Microsecond>(self)
}

var nanoseconds: Interval<Nanosecond> {
return Interval<Nanosecond>(self)
}

var hours: Interval<Hour> {
return Interval<Hour>(self)
}

var days: Interval<Day> {
return Interval<Day>(self)
}

}```

#### Operations

You can perform all basic arithmetic operations on time intervals, even of different units:

```let interval = 10.minutes + 15.seconds - 3.minutes + 2.hours // Interval<Minute>
let doubled = interval * 2

let seconds = 10.seconds + 3.minutes // Interval<Second>```

You can also use these operations on `Date`:

`let oneHourAfter = Date() + 1.hours`

#### Conversions

Time intervals are easily convertible:

`let twoMinutesInSeconds = 2.minutes.inSeconds // Interval<Second>`

You can also convert intervals to Foundation's `TimeInterval`, if needed:

`let timeInterval = 5.minutes.timeInterval`

You can also use `converted(to:)` method:

```let fiveSecondsInHours = 5.seconds.converted(to: Hour.self) // Interval<Hour>
// or
let fiveSecondsInHours: Interval<Hour> = 5.seconds.converted()```

Although, in my opinion, you would rarely need to.

#### Comparison

You can compare different time units as well

`50.minutes < 1.hour`

#### Creating your own time units

If, for some reason, you need to create your own time unit, that's super easy to do:

```public enum Week : TimeUnit {

public static var toTimeIntervalRatio: Double {
return 604800
}

}```

Now you can use it as any other time unit:

`let fiveWeeks = Interval<Week>(5)`

For the sake of convenience, don't forget to write those handy extensions:

```public enum Week : TimeUnit {

public static var toTimeIntervalRatio: Double {
return 604800
}

}

extension Interval {

public var inWeeks: Interval<Week> {
return converted()
}

}

extension Double {

public var weeks: Interval<Week> {
return Interval<Week>(self)
}

}

extension Int {

public var weeks: Interval<Week> {
return Interval<Week>(Double(self))
}

}```

#### Also

Also available:

• Get conversion rate:
`let conversionRate = Hour.conversionRate(to: Second.self) // 3600.0`
• GCD integration:
```DispatchQueue.main.asyncAfter(after: 5.seconds) {
// do stuff
}```

## Installation

Time is available through Carthage. To install, just write into your Cartfile:

`github "dreymonde/Time" ~> 1.0.0`

Time is also available through Cocoapods as "TimeIntervals":

`pod 'TimeIntervals', '~> 1.0.0'`

And Swift Package Manager:

```import PackageDescription

let package = Package(
dependencies: [
.Package(url: "https://github.com/dreymonde/Time.git", majorVersion: 1, minor: 0),
]
)```