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Opaque Types — The Swift Programming Language (Swift 5.7) Opaque Types A function or method with an opaque return type hides its return value’s type information. Instead of providing a concrete type as the function’s return type, the return value is described in terms of the protocols it supports. Hiding type docs.swift.org swift 5.1버전부터 지원을 하고 있는 문법 중, Opaque Types, 불투명 타입 문법이 있습니다. 오늘은 불투명 타입이..