Send a Type to Obedience School – Using Swift Extensions for Additional Protocol Conformance

This article explains how Swift extensions can be used to add protocol conformance to existing types, including those from third-party libraries where you don't have access to the original source code. It walks through a practical example of making a Bird struct conform to the Printable protocol by extending it with a description property. The article emphasizes that explicit protocol adoption must be declared in the extension, as Swift does not support implicit protocol conformance. It is a technical tutorial aimed at Swift developers, covering programming concepts like protocols, extensions, and type conformance.