Random is Good…🎳 With the release of , Apple introduced a new random API in swift’s standard library. Swift 4.2 SE-0202 Let’s look at the details on how we can use this API for different use-cases. 1. Random number from the given Range A method is provided for each numeric data type, i.e. and also for data type. random(in:) Int, UInt, Float, Double Bool — Returns a random value within the specified range. [random(in:)](https://developer.apple.com/documentation/swift/int/2995648-random) Int.random(in: -10...10)   //-6 : Random number in range -10 to 10 Similarly, we can get a random number for other numeric data types too. Int.random(in: Int.min...Int.max)   //5995714053130751044UInt.random(in: 0..<10)             //8Double.random(in: 0...10)           //0.4317509841160627Float.random(in: 0...1)             //0.05182791Bool.random()                       //false 2. Random element from a Collection Getting a random element from a collection i.e. , is something we come across very frequently. array, dictionary or sets — Returns a random element of the collection. [randomElement()](https://developer.apple.com/documentation/swift/array/2994747-randomelement) This method is available on each collection type in swift. var arr = [1, 2, 4]arr.randomElement()      //Returns an element from arr randomly var dict = ["one": 1, "two": 2, "three": 3]dict.randomElement() //Returns an element from dict randomly (0...10).randomElement() //Returns an element from range randomly In case the collection is empty, the returns . randomElement() nil 3. Shuffling the elements of a Collection Elements in collection can be shuffled using or methods. shuffled() shuffle() — Shuffles the collection in place. [shuffle()](https://developer.apple.com/documentation/swift/array/2994753-shuffle) — Returns the elements of the sequence, shuffled. [shuffled()](https://developer.apple.com/documentation/swift/array/2994757-shuffled) These methods are also available on each collection type in swift. var arr = [1, 2, 4]arr.shuffled()      //returns a new array - [4, 2, 1]arr.shuffle()       //shuffles elements in arr itself - [4, 1, 2] (0...10).shuffled()   //[3, 2, 5, 7, 10, 9, 1, 6, 8, 4, 0] Further reading Don’t forget to read my other articles: Everything about Codable in Swift 4 Everything you’ve always wanted to know about notifications in iOS Deep copy vs. shallow copy — and how you can use them in Swift Coding for iOS 11: How to drag & drop into collections & tables All you need to know about Today Extensions (Widget) in iOS 10 UICollectionViewCell selection made easy..!! Feel free to leave comments in case you have any questions.

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Random Numbers API in Swift 4.2

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Payal Gupta

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Random Numbers API in Swift 4.2

Too Long; Didn't Read

Payal Gupta

About Author

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THIS ARTICLE WAS FEATURED IN...

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