{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmametter.hatenablog.com%2Fentry%2F20090312%2Fp1\" title=\" map \u304c\u9762\u5012\u306a\u306e\u3067 DelegateMap - \u307e\u3081\u3081\u3082\" 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,"version":"1.0","url":"https://mametter.hatenablog.com/entry/20090312/p1","author_name":"ku-ma-me","description":"\u7c21\u5358\u306a\u3053\u3068\u3092\u3059\u308b map \u3092\u66f8\u304f\u306e\u304c\u9762\u5012\u3067\u3059\u3002\u914d\u5217\u306e\u5404\u8981\u7d20\u306b 1 \u8db3\u3059\u7a0b\u5ea6\u306e\u3053\u3068\u3067\u3001\u3044\u3061\u3044\u3061 .map {|x| x + 1 } \u306a\u3069\u3068 12 \u30b9\u30c8\u30ed\u30fc\u30af (\u7a7a\u767d\u9664\u304f) \u3082\u5fc5\u8981\u306a\u3093\u3067\u3059\u3088\u3002\u3057\u304b\u3082\u306a\u3093\u304b\u3054\u3061\u3083\u3054\u3061\u3083\u3057\u3066\u8aad\u307f\u306b\u304f\u3044\u3002 \u4f7f\u7528\u983b\u5ea6\u306e\u4f4e\u3044 inject \u3068\u304b\u306a\u3089\u8a31\u305b\u308b\u3093\u3067\u3059\u304c\u3001\u7279\u306b\u4f7f\u7528\u983b\u5ea6\u306e\u9ad8\u3044 map \u304f\u3089\u3044\u306f\u77ed\u304f\u66f8\u304d\u305f\u3044\u3002\u30d6\u30ed\u30c3\u30af\u5909\u6570\u540d\u3092\u6c7a\u3081\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3082\u9762\u5012\u304f\u3055\u3044\u3002\"{|x|\" \u306e\u90e8\u5206\u3068 \"}\" \u306e\u90e8\u5206\u304c\u7570\u306a\u308b\u7b87\u6240\u306b\u5206\u304b\u308c\u308b\u306e\u3082\u6c17\u306b\u5165\u3089\u306a\u3044 *1 \u3002 \u305d\u3053\u3067\u8003\u3048\u305f\u3002\u3053\u3093\u306a\u306e\u3069\u3046\u3060\u308d\u3046\u3002 # \u5404\u8981\u7d20\u306b 1 \u3092\u8db3\u3059 p [1, 2, 3].dmap + 1 #=> [2, 3, 4]\u2026","provider_url":"https://hatena.blog","width":"100%","categories":["Ruby"],"height":"190","blog_url":"https://mametter.hatenablog.com/","title":" map \u304c\u9762\u5012\u306a\u306e\u3067 DelegateMap","blog_title":"\u307e\u3081\u3081\u3082","author_url":"https://blog.hatena.ne.jp/ku-ma-me/","published":"2009-03-12 00:00:00","provider_name":"Hatena Blog","type":"rich"}