{"url":"https://woshidan.hatenadiary.jp/entry/2018/04/15/005017","width":"100%","published":"2018-04-15 00:50:17","blog_title":"woshidan's loose leaf","categories":["Go"],"provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwoshidan.hatenadiary.jp%2Fentry%2F2018%2F04%2F15%2F005017\" title=\"\u4eca\u9031\u306eGo - woshidan&#39;s loose leaf\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"\u90315\u4ee5\u4e0a\u6d3b\u52d5\u3057\u3066\u3044\u308c\u3070\u3088\u3044\u611f\u3058\u3067\u3002 \u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u52d5\u304b\u3057\u306a\u304c\u3089\u3001\u95a2\u6570\u5024g\u306e\u4e2d\u3067\u305d\u306e\u5024\u304c\u5b9a\u7fa9\u3055\u308c\u305f\u95a2\u6570f\u5185\u306e\u5909\u6570A\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u5024g\u306f\u5909\u6570A\u306e\u53c2\u7167\u3092\u6301\u3063\u3066\u3044\u308b\u306e\u3060\u306a\u3041\u3001\u3068\u3044\u3046\u78ba\u8a8d\u3092\u3057\u3066\u3044\u305f var once sync.Once onceFunc := func() { once.Do(func() { fmt.Println(\"A\") }) } func main() { var once sync.Once firstFunc := func() { once.Do(func() { fmt.Println(\"A\") }) } secondFunc := func() { once.\u2026","version":"1.0","height":"190","title":"\u4eca\u9031\u306eGo","provider_name":"Hatena Blog","image_url":null,"blog_url":"https://woshidan.hatenadiary.jp/","type":"rich","author_url":"https://blog.hatena.ne.jp/woshidan/","author_name":"woshidan"}