【Swift 60秒】61 - Computed properties

0x00 Lesson

We just created a Sport struct like this:

struct Sport {
	var name: String
}
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That has a name property that stores a String. These are called stored properties, because Swift has a different kind of property called a computed property - a property that runs code to figure out its value.

We’re going to add another stored property to the Sport struct, then a computed property. Here’s how that looks:

struct Sport {
	var name: String
	var isOlympicSport: Bool 
	var olympicStatus: String {
		if isOlympicSport {
			return "\(name) is an Olympic sport"
		} else {
			return "\(name) is not  an Olympic sport"
		}
	}
}
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As you can see, olympicStatus looks like a regular String, but it returns different values depending on the other properties.

We can try it out by creating a new instance of Sport:

let chessBoxing = Sport(name: "Chessboxing", isOlympicSport: false)
print(chessBoxing.olympicStatus)
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