VDDate 📆

VDDate is a Swift library that offers a robust set of extensions for the Date struct, enhancing its capabilities and making date manipulation in Swift more intuitive and powerful.

Features

Date

• Convenience Date.inits with components parameters year, month, day etc.
• Convenience Date.inits from string with format.
• Static computed property Date.now that can be mocked if needed. It's recommended to use Date.now instead of Date().
• Helper vars: iToday, isTomorrow, isYesterday, iso8601.
• var components, var for each component: day, month, year etc, mutating subscript with Calendar.Component.
• start(of: Calendar.Component) -> Date.
• end(of: Calendar.Component) -> Date.
• matches(DateComponents) -> Bool.
• isInSame(Calendar.Component) -> Bool.
• isCurrent(Calendar.Component) -> Bool
• isEqual(to: Date, toGranularity: Calendar.Component) -> Bool.
• number(of: Calendar.Component, from: Date) -> Int
• numbers(of components: Set<Calendar.Component>, from: Date) -> DateComponents
• components(_ components: Set<Calendar.Component>, from: Date) -> DateComponents
• range(of: Calendar.Component, in: Calendar.Component) -> Range<Int> - range of component, for example range(of: .day, in: .month) returns smth like 1..<32.
• interval(byAdding: DateComponents) -> DateInterval
• interval(of: Calendar.Component, in: Calendar.Component) -> DateInterval
• number(of: Calendar.Component) -> Int
• number(of: Calendar.Component, in: Calendar.Component) -> Int
• DateFormat struct with predefined format components.
• string(DateFormat) -> String Note: Deprecated since iOS 15.0 in favor of formatted(FormatStyle).
• string(date: DateFormatter.Style, time: DateFormatter.Style) -> String Note: Deprecated since iOS 15.0 in favor of formatted(FormatStyle).
• string(format: RelativeDateFormat<DateFormat>) - method for converting formatting date relative to current (or any other) date. Note: Deprecated since iOS 15.0 in favor of formatted(RelativeDateFormatStyle)
• formatted(RelativeDateFormatStyle)
• name(of: Calendar.Component) -> String
• ordinality(of: Calendar.Component, in: Calendar.Component) -> Int? and convenience methods for each component like day(in: Calendar.Component).
• Minus operator for date returns TimeInterval.
• adding(DateComponents) -> Date
• adding(Int, Calendar.Component) -> Date
• setting(DateComponents) -> Date
• setting(Int, Calendar.Component) -> Date
• compare(with: Date, toGranularity: Calendar.Component) -> ComparasionResult
• nextWeekend(direction: Calendar.SearchDirection) -> DateInterval?
• next(Calendar.Component, direction: Calendar.SearchDirection) -> Date
• nearest(DateComponents) -> Date?
• rounded(Calendar.Component, by: Int) -> Date date rounded by some component, useful when you deal with regular time intervals.

Note

All methods accept a Calendar parameter and, in some cases, TimeZone or Locale.
I've introduced static variables: Calendar.default, TimeZone.default, and Locale.default.
These variables serve as the default values for each respective method. You can modify each default variable either globally or specifically for a given method.

Overload for Calendar parameter globally:

Calendar.bootstrap(default: Calendar(identifier: .gregorian))

Use Calendar parameter for a specific method:

date.start(of: .day, calendar: Calendar(identifier: .gregorian))

Tip: You can use TaskLocal to set the default value for a specific task and it's subtasks.

extension Calendar {
  @TaskLocal
  static var local: Calendar = .autoupdatingCurrent
}

Calendar.bootstrap(default: .local)

Calendar.$local.withValue(Calendar(identifier: .gregorian)) {
  print(Date.now.start(of: .day))
}

TimeInterval

• DatesCollection struct and function each(Int, Calendar.Component) -> DatesCollection.

DateComponents

• Arithmetic operators: +, - between DateComponents, +, -, /, * between DateComponents and Int, +, - between DateComponents and Date.
• Convenience static methods for each component like .day(3).
• Extensions on BinaryInteger like 2.days, so now it possible to write date + 2.days.
• DateComponents now is expressible by dictionary literal like [.day: 2, .month: 1]
• mutating subscript with Calendar.Components.
• rawValue: [Calendar.Component: Int] - dictionary with components.

Installation

1. Swift Package Manager

Create a Package.swift file.

// swift-tools-version:5.7
import PackageDescription

let package = Package(
  name: "SomeProject",
  dependencies: [
    .package(url: "https://github.com/dankinsoid/VDDate.git", from: "0.14.0")
  ],
  targets: [
    .target(name: "SomeProject", dependencies: ["VDDate"])
  ]
)

$ swift build

Author

dankinsoid, voidilov@gmail.com

License

VDDate is available under the MIT license. See the LICENSE file for more info.