ExpressibleByStringLiteral
A type that can be initialized with a string literal.
Declaration
protocol ExpressibleByStringLiteral : ExpressibleByExtendedGraphemeClusterLiteralOverview
The String and StaticString types conform to the ExpressibleByStringLiteral protocol. You can initialize a variable or constant of either of these types using a string literal of any length.
let picnicGuest = "Deserving porcupine"Conforming to ExpressibleByStringLiteral
To add ExpressibleByStringLiteral conformance to your custom type, implement the required initializer.