resource acquisition is initialization
RAII
/suto3/google.iconresource acquisition is initialization
/suto3/Google画像検索.iconresource acquisition is initialization
/suto3/Google定義検索.icon resource acquisition is initialization
/suto3/wikipedia.iconresource acquisition is initialization
/suto3/weblio.icon resource acquisition is initialization
/suto3/kotobank.icon resource acquisition is initialization
/suto3/jisho.icon resource acquisition is initialization