Created
June 16, 2018 02:54
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// here we have the type we are trying to extend the double | |
// notice how we can extend anything, even a built in type like Double | |
extension Double { | |
var km: Double { return self * 1_000.0 } | |
var m: Double { return self } | |
var cm: Double { return self / 100.0 } | |
var mm: Double { return self / 1_000.0 } | |
var ft: Double { return self / 3.28084 } | |
} | |
let oneInch = 25.4.mm | |
print("One inch is \(oneInch) meters") | |
// Prints "One inch is 0.0254 meters" | |
let threeFeet = 3.ft | |
print("Three feet is \(threeFeet) meters") | |
// Prints "Three feet is 0.914399970739201 meters" |
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