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@STYLELAB

HaxeでSingletonパターンを実装する

HaxeでSingletonパターンを実装するメモです。
GOFのパターンに近いです。
自分はどの言語でもこの形式で実装しています。

class Singleton {
    private static var instance=null;
    private static var internallyCalled:Bool = false;

    public function new() {
        if(internallyCalled){
            internallyCalled=false;
        }else{
            throw "Singleton.getInstance()で生成してね。";
        }
    }

    public static function getInstance():Singleton{
        if(Singleton.instance==null){
            internallyCalled = true;
            instance = new Singleton();
        }
        return instance;
    }
}

インスタンス生成はstaticにgetInstanceで。


var singleton=Singleton.getInstance();

TypeScript版をこちらで投稿しています。
http://qiita.com/STYLELAB/items/42426712f1c844e02ef8

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