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Property wrappers allow property declaration to state what kind of property wrapper is used for implementing the property. We can use it for implementing transformations on properties like validating if string is email or not. This is what we will do: creating a property wrapper for email properties and validating emails using NSDataDetector. If value …
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When writing code in Swift it is often needed to observe changes in other objects. We can use Apple's key-value observation but it has some implications: requires to use NSObject and dynamic dispatch through Objective-C runtime. This time, let's build a simple key-value observation in Swift what does not require to use NSObject at all. …
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iOS 13 added a new class named UIContextMenuInteraction what is used for attaching menus to views. When adding menu interaction to a view and user uses 3D Touch or long press gesture on devices not supporting it, a menu is presented alongside with the highlighted content view. Therefore depending on the available space, not all …
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