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SwiftでInitとDeinit

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クラスの初期化については、インスタンス化する際に、init()がコールされるので初期化処理を記述することができる。クラスの後始末処理については、deinitに処理を記述できるが、ARC(Automatic Reference Counting)によって自動的に呼ばれるために、プログラマが意図的にコールすることはできない。

とりあえずこんなメソッドもあるということで覚え書き。あまり使わないと思うが。

class MyDeclaration{
    init(){
        NSLog("Init!!")
    }

    deinit{
        NSLog("Deinit!!")
    }
}

var myClass:MyDeclaration = MyDeclaration()

スクリーンショット 2014-07-23 11.40.46.png

余談だが、init()にはカッコ()が付き、deinitにはカッコ()が付かない理由は、よくわからない。

tajihiro
Web System Engineer 元フリーランスの金融系SE(Java/Swift/Ruby/Python/JS/AS3/php/J2EE/Rails/Oracle/MySQL) 趣味:Web開発/アイスホッケー/フットサル/野球/スキー/Ukulele
http://www.whoocus.com/blog/
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