How do I use KeyPaths and dynamic member lookup?

KeyPaths and dynamic member lookup are powerful features in Swift that enhance the way we access properties of objects and types.

KeyPaths allow you to reference properties in a type-safe way, while dynamic member lookup enables you to access members of a type dynamically.

Example Usage

// A simple example of KeyPaths in Swift struct Person { var name: String var age: Int } let person = Person(name: "John Doe", age: 30) let keyPath = \Person.name print(person[keyPath: keyPath]) // Output: John Doe // Example of dynamic member lookup @dynamicMemberLookup struct DynamicStruct { subscript(dynamicMember member: String) -> String { return "Dynamic value for \(member)" } } let dynamic = DynamicStruct() print(dynamic.someProperty) // Output: Dynamic value for someProperty

KeyPaths dynamic member lookup Swift properties types dynamic access

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