{"height":"190","author_name":"nkgt_chkonk","blog_title":"\u732b\u578b\u306e\u84c4\u97f3\u6a5f\u306f 1 \u5206\u9593\u306b 45 \u56de\u306b\u3083\u3042\u3068\u9cf4\u304f","provider_url":"https://hatena.blog","url":"https://nekogata.hatenablog.com/entry/2013/07/02/223605","blog_url":"https://nekogata.hatenablog.com/","image_url":null,"width":"100%","provider_name":"Hatena Blog","published":"2013-07-02 22:36:05","author_url":"https://blog.hatena.ne.jp/nkgt_chkonk/","title":"Ruby \u3067 Scala \u306e Option \u3063\u307d\u3044\u3084\u3064\u3092\u5b9f\u88c5\u3057\u3066\u307f\u305f\u8a71","version":"1.0","categories":["programming","Scala","Ruby"],"type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnekogata.hatenablog.com%2Fentry%2F2013%2F07%2F02%2F223605\" title=\"Ruby \u3067 Scala \u306e Option \u3063\u307d\u3044\u3084\u3064\u3092\u5b9f\u88c5\u3057\u3066\u307f\u305f\u8a71 - \u732b\u578b\u306e\u84c4\u97f3\u6a5f\u306f 1 \u5206\u9593\u306b 45 \u56de\u306b\u3083\u3042\u3068\u9cf4\u304f\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"\u3053\u3093\u306a\u611f\u3058\u3067\u5b9f\u88c5\u3067\u304d\u305f\u3002Option (Haskell \u3067\u8a00\u3046\u3068\u3053\u308d\u306e Maybe)\u306f\u30e2\u30ca\u30c9\u306e\u4e2d\u3067\u3082\u304b\u306a\u308a\u308f\u304b\u308a\u3084\u3059\u304f\u5b9f\u88c5\u3057\u3084\u3059\u3044\u3002foreach \u3068\u304b filter \u306f\u5b9f\u88c5\u3057\u3066\u306a\u3044\u3002 \u305f\u3060\u3001\u3053\u308c\u3060\u3051\u304c\u3042\u3063\u3066\u3082\u3001map \u3084 flatmap \u3068\u304b foreach \u3068\u304b\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u3068\u304d\u306b\u8aad\u307f\u3084\u3059\u3044\u611f\u3058\u306e\u4ed5\u7d44\u307f\uff08Scala \u306e for\u6587\u306b\u3042\u305f\u308b\u3084\u3064\uff09\u3068\u304b\u304c\u306a\u3044\u3068\u3042\u307e\u308a\u3046\u307e\u307f\u304c\u306a\u3044\u306a\u3001\u3068\u611f\u3058\u305f\u3002\u6700\u5f8c\u306e\u307b\u3046\u306e\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3068\u304b\u898b\u308b\u3068\u3001 Scala \u306e for \u6587\u304c\u3044\u304b\u306b\u3059\u3070\u3089\u3057\u3044\u304b\u3063\u3066\u3053\u3068\u3092\u75db\u611f\u3059\u308b\u611f\u3058\u306b\u306a\u3063\u3066\u308b\u3002 \u305d\u306e\u8fba\u306e\u69cb\u6587\u3092\u8ffd\u52a0\u3059\u308b\u9ed2\u9b54\u8853\u7684\u306a\u5b9f\u88c5\u3001\u4eca\u306e\u3068\u3053\u308d\u601d\u3044\u3064\u3044\u3066\u306a\u3044\u306e\u3067\u601d\u3044\u3064\u304f\u3072\u3068\u306f\u66f8\u3044\u3066\u307f\u2026"}