Dynamic Swift
summary
Claims a single trick that adds Objective‑C style dispatch to Swift code: add the dynamic keyword or @objc on NSObject types and use forwardingTarget(for:) while typing the link as AnyObject to build a responder‑chain‑style message forwarder. The demo wires three handler instances, forwards an unimplemented selector along the chain in Xcode playgrounds, and shows the call resolving at the next target, so the mechanism actually works as presented at dotSwift 2017.
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