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| //: Playground - noun: a place where people can play | |
| import UIKit | |
| class Hoge: NSObject, Comparable { | |
| let text:String | |
| init(text:String) { | |
| self.text = text | |
| } | |
| static func ==(x: Hoge, y: Hoge) -> Bool { | |
| return x.text == y.text | |
| } | |
| static func <(x: Hoge, y: Hoge) -> Bool { | |
| return x.text > y.text | |
| } | |
| override var hashValue: Int { | |
| return text.hashValue | |
| } | |
| } | |
| let a = Hoge(text:"ほげ") | |
| let b = Hoge(text:"ほげ") | |
| a == b //なんとtrue | |
| var set:Set<Hoge> = [] | |
| set.insert(a) | |
| set.insert(b) | |
| set.count //2!! | |
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