Stroking and filling a SwiftUI shape at the same time | Swift by Sundell
Articles, podcasts and news about Swift development, by John Sundell. One really powerful aspect of SwiftUI’s overall API is that it enables us to draw things like shapes, gradients, and colors the same way that we render views and UI controls. For example, if we wanted to render a button shaped as a rounded rectangle, then we could do so by assigning a RoundedRectangle shape as our view’s backgro
Accessing a Swift property wrapper’s enclosing instance | Swift by Sundell
Articles, podcasts and news about Swift development, by John Sundell. Like its name implies, Swift’s property wrappers feature enables us to wrap a given property value within a custom type, which in turn lets us apply transforms and run other kinds of logic whenever that value is modified. By default, a property wrapper is completely disconnected from the enclosing types in which it’s being used,
The Swift 5.1 features that power SwiftUI’s API | Swift by Sundell
Articles, podcasts and news about Swift development, by John Sundell. The introduction of SwiftUI, Apple’s declarative new UI framework, was clearly one of the most impactful announcements made during this year’s WWDC conference. As a brand new way of building UIs for all of Apple’s platforms, using a coding style that’s vastly different from the way UIKit works, SwiftUI isn’t just a new framework
Bindable values in Swift | Swift by Sundell
Articles, podcasts and news about Swift development, by John Sundell. Arguably one of the most challenging aspects of building apps for most platforms is making sure that the UI we present to the user always remains in sync with our underlying data models and their associated logic. It’s so common to encounter bugs that causes stale data to be rendered, or errors that happen because of conflicts b
Navigation in Swift | Swift by Sundell
Articles, podcasts and news about Swift development, by John Sundell. Every app that doesn't only consist of one single UI needs some form of navigation - to enable users to move between different screens and to display information or react to events. Whether you use navigation controllers, modal view controllers or some form of custom paradigm - having a nice way to perform navigation, in a way t
Using unit tests to identify and avoid memory leaks in Swift | Swift by Sundell
Articles, podcasts and news about Swift development, by John Sundell. Managing memory and avoiding leaks is a crucial part of building any kind of program. Thankfully Swift makes this relatively easy in most situations - thanks to Automatic Reference Counting (or ARC for short). However, there are still times when it can be quite easy to make a mistake that causes memory to be leaked. Memory leaks
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Published properties in Swift | Swift by Sundell
Validating email addresses using RawRepresentable and NSDataDetector | Swift by Sundell
Optional SwiftUI views | Swift by Sundell
Simple Swift dependency injection with functions | Swift by Sundell
23: “Epic compiler quest”, with special guests Harlan Haskins and Robert Widmann | Swift by Sundell
Using child view controllers as plugins in Swift | Swift by Sundell