{"author_name":"shigemk2","author_url":"https://blog.hatena.ne.jp/shigemk2/","width":"100%","blog_title":"by shigemk2","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2Ftrying_flatmap\" title=\"flatMap\u3092\u8a66\u3057\u3066\u307f\u3088\u3046 - by shigemk2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"published":"2016-03-07 21:29:35","blog_url":"https://www.shigemk2.com/","url":"https://www.shigemk2.com/entry/trying_flatmap","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","description":"\u7279\u306b\u7406\u7531\u306f\u306a\u3044\u3067\u3059\u3002 scala> val a: Option[Int] = None a: Option[Int] = None scala> a.flatMap ( x => Option(x + 10)) res14: Option[Int] = None scala> val a: Option[Int] = Option(300) a: Option[Int] = Some(300) scala> a.flatMap ( x => Option(x + 10)) res15: Option[Int] = Some(310)","title":"flatMap\u3092\u8a66\u3057\u3066\u307f\u3088\u3046","height":"190","categories":["Scala"],"type":"rich"}