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February 22, 2018 11:43
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Lenses example
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let actor01 = Actor(name: "Sharon", surname: "Stone") | |
let actor02 = Actor(name: "George", surname: "Clooney") | |
let actor03 = Actor(name: "Ennio", surname: "Masi") | |
let movie01 = Movie(title: "movie01", year: "1995", actors: [actor01, actor02]) | |
let movie02 = Movie(title: "movie02", year: "2002", actors: []) | |
Movie.Lenses.mainActor.get(movie01) // -> "Sharon Stone" | |
Movie.Lenses.mainActor.get(movie02) // -> nil | |
Movie.Lenses.mainActor.get(Movie.Lenses.mainActor.set(movie01, actor03)) // -> Ennio Masi ✌🏼 |
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