Protocol Composition — Swift

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While working with protocols in swift, you might have written a type conforming to multiple protocols.
Here comes Protocol Composition a technique to combine multiple protocols into a single representation.

How it is written:

The problem with it is if there are too many protocols then the conformance code looks weird.

Better way of representing it is using typealias, like this;

The most common example of protocol-composition you might have used is Codable protocol; yes it is a composition of two different protocols Encodable and Decodable.

Thanks for reading.