Basic Swift extensions that make life easier.

🪶 Lightweight, Swift-y looking code for modern SwiftUI developers

🧩 Useful methods and properties written in native Swift

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⚠️ Note: This package is still under development and its contents are freely subject to change.

🚧 Wiki under construction. Read below to get started!

What is FoundationPlus?

FoundationPlus is a suite of basic Swift extensions that help speed up the process of app development, and help make your code look nicer. Functions that you’ll normally need, like methods to check the app’s version, get the current day of week, and so on, can have convoluted code. FoundationPlus simplifies these with built-in extensions.

// 😴 Before
let interval = TimeInterval(9945)

// ✨ After
let interval = 2.hours + 45.minutes + 45.seconds

// 😴 Before
if let value = optionalValue {
  myVar = value
} else {
  myVar = nil
}

// ✨ After
myVar =? optionalValue

// 😴 Before
if array.count >= 5 {
  myVar = array[4]
}

// ✨ After
myVar = array[safe: 4]

Completed Features

• Extensions
  • Date and TimeInterval extensions →
  • Array extensions →
  • Optional extensions →
  • String extensions →
• Other Features
  • Open URL action →
  • Get part of day and weekday →

Most of the above features are cross-platform and are supported on iOS, macOS, tvOS and watchOS.

Get Started

Add FoundationPlus to your project using Swift Package Manager:

https://github.com/Flowductive/foundation-plus

🧩 Extensions

Date and TimeInterval extensions

Get TimeIntervals easily:

let interval = 10.minutes
let interval2 = 4.days

Format TimeIntervals:

print(3.hours.formattedColon) // 3:00
print((2.minutes + 30.seconds).formatted(.short)) // 2m 30s
print(4.hours.formatted(.full)) // 4 hours

Get the current month, day, hour, minute, etc:

let date = Date()
let dateFormatted = "The current time is \(date.hour) : \(date.minute)."

Get a date moved forward to right before midnight:

let thisEvening = date.atMidnight

Get formatted versions of the date:

print(date.shorthand) // 6/7/22
print(date.longhand) // Tuesday, June 07, 2022

Subtract dates and get a TimeInterval:

let timeBetween = laterDate - earlierDate

Get the next/preview occurence of a specific weekday:

let nextTuesday = Date().next(.tuesday)
let lastWednesday = Date().previous(.wednesday, considerToday: false)

Get a string representing how long it’s been since the Date:

print(lastWednesday.timeAgoSince()) // 2 days ago

Array extensions

Safely subscript arrays, and even wrap array indices:

let myString = ["a", "b", "c", "d"]
let myString: String = myStrings[safe: 5] ?? "-" // "-"
let myString2: String = myString[wrap: 5] // "b"

Use new operators on arrays:

var array: [1, 2, 3]

// Add the element(s) if it is not inside
array <= 4 // [1, 2, 3, 4]
array <= 2 // [1, 2, 3, 4]
array <= [4, 5] // [1, 2, 3, 4, 5]

// Remove elements
array -= 1 // [2, 3, 4, 5]
array -= [2, 3, 6] // [4, 5]

Use additional methods on arrays:

let array = [1, 2, 3, 3]
// Add to the end if not already in the array
array.appendUniquely(5) // [1, 2, 3, 3, 5]
// Add to the beginning if not already in the array
array.pushUniquely(0) // [0, 1, 2, 3, 3, 5]
// Remove all of an element
array.removeAll(3) // [0, 1, 2, 5]
// Pick a random bunch of elements
array.pick(2) // [0, 2]

Optional extensions

Optionally assign the right-hand side to the left-hand side if non-nil:

var str: String = "Hello World"
var optionalStr: String? = nil
str =? optionalStr // Only sets str if myOptionalString is non-nil
print(str) // "Hello, world"

Optionally check if two Optional or non-Optional values are equal/nonequal, and return false for equality and true for inequality if either value is nil:

let areEqual: Bool { nil ==? 4 } // False
let areNonEqual: Bool { 4 !=? 3 } // True

String extensions

Return only alpha-numeric parts of a String:

let alphanumeric = "Abc123+-=~".alphanumeric // "Abc123"

Return the first word of a String:

let first = "Hello World!".firstWord // "Hello"

Get a random alphanumeric string with a specified length:

let random = String.random(16) // "b7vb92Fg9FEN2g8A"

Repeat a String:

let repeated = "Hi".repeat(5) // "HiHiHiHiHi"

Check if a String is a valid email:

let isEmailValid: Bool = "test@hi.com".isValidEmail() // True

✨ Other Features

Get URL action

Quickly open a URL in iOS or macOS:

myUrl.open()

Get part of day and weekday

Grab information regarding the time of day:

let part = DayPart.get(from: Date()) // Chooses automatically from .morning, .midday, .afternoon, .evening, .night, and .midnight
print(part.greeting) // "Good morning!"