You can make any transform with each element in the passing closure, and compactMap will make sure there is no nil value in the resulting array. Here is another example where we try to parse a number String into
Multiple semesters of teaching Swift in iOS app development courses About this tutor › In order to create an empty array, you need to declare the type of the elements that are going to be in the array. For example: var myIntArray = [Int]() var myStringArray = [String]() or var...
You can perform any kind of calculation, comparison or computation in the closure that you use, just keep in mind that the more work you in your closure, the slower your filter might become. Ideally, you should make sure that you do as little work as possible when filtering an Array. If...
In today's tutorial, you learn how to convert an array to a string in Swift. The Foundation framework defines a few APIs we can use. Which API you use largely depends on the type of the elements of the array. Let's get started....
Swift fundamentals You can use Array's insert(_:at:) method to insert a new element at the start, or any other arbitrary position of an Array: Take the pain out of building and testing your app’s paywalls. With RevenueCat’s all new Paywalls you can custom build and remotely configure...
Make an object conforms to the Codable protocol. Encode it to Data using JSONEncoder. Decode Data back to Contact using JSONDecoder.Let's see an example.I create a new custom object, Contact.struct Contact: Codable { let name: String}Save an array of custom objects....
Learn, how to get the last element of a given array in Swift. Consider, we have the following array: var cars = ["Skoda", "Volvo", "BMW"]; To access the last element (BMW) from an above array, we can use the subscript syntax [ ] by passing its index. In Swift arrays are zer...
This tutorial belongs to the Swift seriesSuppose you have an array in Swift, like this:var items = 1...3and you want to shuffle it, so that you get its items in random order.There are 2 ways to do that in Swift.One way is mutating the original array, and it’s using the ...
In this tutorial, we are going to learn how to convert the string to array in Swift. To convert a string to an array, we can use the…
Swift how to filter an array importUIKitletweekDays:[String] = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","SUNDAY","MONDAY","TUESDAY","WEDNESDAY","THURSDAY","FRIDAY","SATURDAY"]varmyDays = weekDays.filter({ $0.hasSuffix("nday") })print(myDays)//Result ...