{"version":"1.0","blog_title":"tofucodes diary","title":"Ruby\u306eEnumerator\u304c\u7406\u89e3\u3067\u304d\u305f\u3088\u3046\u306a\u6c17\u304c\u3057\u305f\u8a71","description":"\u4ed5\u4e8b\u3067\u5148\u4eba\u306eRuby\u306e\u30b3\u30fc\u30c9\u3092\u898b\u3066\u305f\u3089Enumerator\u3068\u3044\u3046\u30af\u30e9\u30b9\u304c\u51fa\u3066\u304d\u307e\u3057\u305f\u3002 \u521d\u898b\u3060\u3063\u305f\u306e\u3067\u30b0\u30b0\u3063\u3066\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u898b\u3066\u307f\u305f\u304c\u3088\u304f\u5206\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002 \u7279\u306b\u300c\u9045\u5ef6\u8a55\u4fa1\u300d\u3066\u3068\u3053\u308d\u304c\u30d1\u30c3\u3068\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002 (1..Float::INFINITY).map{ |n| n * 2 }.first(5) => \u7121\u9650\u30ea\u30b9\u30c8\u3092\u30eb\u30fc\u30d7\u3059\u308b\u305f\u3081first\u307e\u3067\u5b9f\u884c\u3055\u308c\u305a\u51e6\u7406\u304c\u7d42\u308f\u3089\u306a\u3044 (1..Float::INFINITY).first(5) => [1,2,3,4,5] \u3053\u308c\u304c\u9045\u5ef6\u8a55\u4fa1\uff08\u3069\u3093\uff01\uff09\u3002 \u3069\u3046\u3067\u3057\u3087\u3046\u304b\uff1f\u5206\u304b\u308a\u307e\u3057\u305f\u304b\uff1f \u50d5\u306f\u4e0a\u8a18\u3067\u306f\u3088\u304f\u5206\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u304c\u3001Enumerator::Lazy\u2026","published":"2015-12-10 23:25:03","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftofucodes.hatenablog.jp%2Fentry%2F2015%2F12%2F10%2F232503\" title=\"Ruby\u306eEnumerator\u304c\u7406\u89e3\u3067\u304d\u305f\u3088\u3046\u306a\u6c17\u304c\u3057\u305f\u8a71 - tofucodes diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","author_name":"tofucodes","author_url":"https://blog.hatena.ne.jp/tofucodes/","provider_name":"Hatena Blog","image_url":null,"url":"https://tofucodes.hatenablog.jp/entry/2015/12/10/232503","categories":["ruby"],"type":"rich","provider_url":"https://hatena.blog","blog_url":"https://tofucodes.hatenablog.jp/"}