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May 22, 2019 12:50
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Protocol and conformance
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| protocol Drawable { | |
| func draw() | |
| } | |
| struct Point: Drawable { | |
| var x: Int | |
| var y: Int | |
| func draw() { | |
| print("Draw a point at (\(x), \(y))") | |
| } | |
| } | |
| // Main | |
| let point: Drawable = Point(x: 1, y: 1) | |
| point.draw() |
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