Share Xcode snippets with your team — Argument Parser is a new package introduced by Apple. It makes writing a command line tool easier to automate common tasks. Argument Parser has three property wrappers: Argument, Flag, and Option. Argument It is a value set in our argument variable when running the script. For example, we will run swift…

Reduce Dependency Injection Complexity With Container at Runtime — Dependency injection is not only known as achieving dependency inversion principle which we already know that from SOLID principle but also provides powerful unit testing. In this article, I will not explain that what is dependency injection and compare its advantages, disadvantages with singleton, I am going to focus a…

Explore Protocols and Generics More — Some and any are keywords that are used before protocol variable declaration to specify its type existential or opaque. At first, as we iOS developers, we met some keyword in SwiftUI View body variable definition with Swift 5.1. After that, we met any keyword with Swift 5.6. Let’s start…

Meet Multicast Delegate — Remind The Notification Center The Notification Center is a type of the observer pattern, similar to the delegation pattern which informs that an operation has been completed. …

Using tryMap, catch, replaceError operations and Fail Publisher — Error handling provides us catching an error during an application lifecycle in the mobile development. When we develop the app by written imperatively in Swift such as try-catch, Result failure case are significant to catch any error. In Combine, differently, it pushes us to handle catching an error at the…

Get an Idea About Combine with UIKit — Just is a struct that gets a generic value in its initialization for using asynchronous programming namely Combine. It only emits its value once to subscriber and it is finished so it is known as Publisher, too. …

Safe provides bounds-checking for existing collections in Swift. It prevents Index out of range error when we deal with for instance accessing collection’s element to show for every table view or collection view. It unwraps the value of collection if it is not inside it, gives a nil value. Therefore…

Meet XCTemplate — Sometimes almost every task is often similar to another one from some aspects. There is always a boilerplate code for those tasks and there are common part of each other. For example, if we want to list something, we always prefer UITableView or we want to list and configure something…

Improve performance for older iPhones — Both color blending and off-screen rendering are an unheeded topic for iOS development owing to the power of iPhones. On the other hand, it is not only a hot topic for iOS interviews, but also if you are working with lots of high-resolution images in a list for an old…