{"provider_name":"Hatena Blog","blog_url":"https://kmizu.hatenablog.com/","image_url":null,"height":"190","width":"100%","categories":[],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkmizu.hatenablog.com%2Fentry%2F2014%2F04%2F23%2F172528\" title=\"\u521d\u5b66\u8005\u5411\u3051\u306e Scala Tips (1) - Option#map()\u3092\u4f7f\u304a\u3046 - kmizu\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2014-04-23 17:25:28","author_name":"kmizushima","version":"1.0","blog_title":"kmizu\u306e\u65e5\u8a18","type":"rich","title":"\u521d\u5b66\u8005\u5411\u3051\u306e Scala Tips (1) - Option#map()\u3092\u4f7f\u304a\u3046","provider_url":"https://hatena.blog","url":"https://kmizu.hatenablog.com/entry/2014/04/23/172528","author_url":"https://blog.hatena.ne.jp/kmizushima/","description":"\u5510\u7a81\u306b\u59cb\u307e\u3063\u305fScala Tips\u30b3\u30fc\u30ca\u30fc\u3001\u521d\u5b66\u8005\u304c\u9665\u308a\u304c\u3061\u306aScala\u306e\u30b3\u30fc\u30c9\u30d1\u30bf\u30fc\u30f3\u3092\u4f8b\u306b\u3057\u3066\u3001\u3088\u308a\u826f\u3044\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u7b2c\u4e00\u56de\u306fOption\u30af\u30e9\u30b9\u306emap()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u304a\u3046\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002\u77e5\u3063\u3066\u308b\u4eba\u306b\u306f\u4eca\u66f4\u3067\u3059\u304c\u3001Option#map(f)\u306f\u3001\u30ec\u30b7\u30fc\u30d0\u30fc\u306e\u5024\u304cSome(v)\u306e\u5834\u5408\u306f\u3001f\u306bv\u3092\u6e21\u3057\u305f\u7d50\u679c\u306eSome(f(v))\u304c\u3001None\u306e\u5834\u5408\u306fNone\u304c\u8fd4\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u3092\u4f7f\u3063\u305f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306f val result = exp1 match { case Some(v1) => val vx = //expression using v1 Some(vx) \u2026"}