When you want to ensure that a code block is executed just before control exits the scope, Swift Defer Statement comes to your rescue. Sometimes a function is required to have multiple conditional exit point and covering those exit points without swift defer statement can lead to code duplication or it might… Read more »
While going through Xcode 10.1 release notes I stumbled upon a very unfamiliar term “nonmutating setters”. Inquisitiveness had the best of me and I spent time reading about it and implementing examples. Here is the jest for you nonmutable setters cannot be used within Classes or protocol bound classes nonmutable setters… Read more »
While using codable we come across situations when our object keys are not at the root level //Final code /* JSON data { “dog”: { “id”: 1, “task”: “bow wow” } }*/ struct Dog: Codable { let id: Int let task: String } let decoder = JSONDecoder() let userDictionary = try… Read more »
Promise kit and Alamofire when used together create a very powerful and flexible API Layer Every App interacting with web services contains an API layer which separates API handling from the rest of the application logic. Usually, the API layer is implemented using delegates or escaping closures. Escaping closures and delegates are… Read more »
To know which version of Swift, your project is using you have to do following steps Open project in Xcode. select Project -> target -> build settings Type Swift_version in search You will get your swift version information under swift language version key.
In the previous post we discussed about parsing JSON using JSONDecoder. In this post we will deal with a very common problem of different keys. At times it happens that we do not agree with the keys coming in JSON and we want to call them something else. We can… Read more »
Parsing JSON data in into swift objects have become super easy with Swift 4 JSONDecoder.Given below is a simple example which hits a Api and parses the JSON data directly to student object.We are assuming that we have a JSON response which has same keys as names of properties. import UIKit struct… Read more »
This article is meant to be a guide. Target is to evolve it to a exhaustive list of swift questions and answers with your support. Given below are few of the most common questions asked in swift interview straight from swift docs, which according to me is a must read… Read more »
WebKit was introduced in iOS 8 but was released with an error which resulted in a runtime crash, if the configuration was done using Interface Builder. So in Xcode 9 if your project configuration has minimum OS support less than 11.0 and you try to add WebKit using interface builder Xcode… Read more »
fatal error: unexpectedly found nil while unwrapping an Optional value This error is caused by unconditionally unwrapping an optional which had nil. Optional is a type in swift which can either contain a value or no value nil. When a optional variable or constant which contains nil is forced unwrapped… Read more »
