{"image_url":null,"type":"rich","height":"190","author_url":"https://blog.hatena.ne.jp/fvknk97034/","published":"2024-09-29 13:15:09","version":"1.0","blog_title":"~fvknk97034/bk","url":"https://fvknk97034.hatenablog.com/entry/2024/09/29/131509","author_name":"fvknk97034","provider_url":"https://hatena.blog","blog_url":"https://fvknk97034.hatenablog.com/","provider_name":"Hatena Blog","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ffvknk97034.hatenablog.com%2Fentry%2F2024%2F09%2F29%2F131509\" title=\"(2..0).size\u30fb(2..0).each \u3092\u8aad\u307f\u89e3\u304f - ~fvknk97034/bk\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"(2..0).size\u30fb(2..0).each \u3092\u8aad\u307f\u89e3\u304f","categories":["Ruby"],"description":"\u306f\u3058\u3081\u306b Ruby \u3067 (2..0) \u306e\u3088\u3046\u306b\u5024\u306e\u5927\u304d\u3044\u65b9\u3092\u5148\u306b\u3001\u5c0f\u3055\u3044\u65b9\u3092\u5f8c\u306b\u5b9a\u7fa9\u3057\u305f\u5834\u5408\u306b\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30a8\u30e9\u30fc\u306b\u306f\u306a\u3089\u306a\u3044\u3001\u304b\u3064\u7bc4\u56f2\u5185\u306e\u8981\u7d20\u6570\u304c 0 \u306b\u306a\u308b\u6319\u52d5\u304c\u4e0d\u601d\u8b70\u306b\u601d\u3044\u307e\u3057\u305f\u3002 (0..2).each { |v| p v } # \u2193\u51fa\u529b\u7d50\u679c # 0 # 1 # 2 (2..0).each { |v| p v } # \u51fa\u529b\u7d50\u679c\u306a\u3057 (2..1).size => 0 \u305d\u306e\u305f\u3081\u3001Range \u306e\u5b9a\u7fa9\u3001\u304a\u3088\u3073\u95a2\u9023\u3059\u308b\u51e6\u7406\u3067\u4f55\u3092\u884c\u3063\u3066\u3044\u308b\u306e\u304b\u3001Ruby \u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u773a\u3081\u306a\u304c\u3089\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002 \u8abf\u67fb 1. Ruby \u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u898b\u308b \u307e\u305a\u306f\u3001Ruby \u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u306e Range \u30af\u30e9\u30b9\u306e\u2026"}