{"id":30,"date":"2023-09-19T13:16:12","date_gmt":"2022-07-24T04:38:45","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/%e3%83%ab%e3%83%93%e3%83%bc%e3%81%a7%e9%85%8d%e5%88%97%e3%82%92%e6%89%b1%e3%81%86%e6%96%b9%e6%b3%95\/"},"modified":"2025-07-31T13:31:04","modified_gmt":"2025-07-31T04:31:04","slug":"%e3%83%ab%e3%83%93%e3%83%bc%e3%81%a7%e9%85%8d%e5%88%97%e3%82%92%e6%89%b1%e3%81%86%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e3%83%ab%e3%83%93%e3%83%bc%e3%81%a7%e9%85%8d%e5%88%97%e3%82%92%e6%89%b1%e3%81%86%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u30eb\u30d3\u30fc\u3067\u914d\u5217\u3092\u6271\u3046\u65b9\u6cd5"},"content":{"rendered":"<h3>\u306f\u3058\u3081\u306b<\/h3>\n<p>\u914d\u5217\u306f\u8981\u7d20\u3068\u547c\u3070\u308c\u308b\u5024\u306e\u30ea\u30b9\u30c8\u3092\u8868\u3059\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u3002\u914d\u5217\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u8907\u6570\u306e\u5024\u30921\u3064\u306e\u5909\u6570\u306b\u683c\u7d0d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Ruby\u3067\u306f\u3001\u914d\u5217\u306f\u6570\u5024\u3001\u6587\u5b57\u5217\u3001\u304a\u3088\u3073\u4ed6\u306eRuby\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u3069\u3001\u4efb\u610f\u306e\u30c7\u30fc\u30bf\u578b\u3092\u542b\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u3092\u7e2e\u5c0f\u3057\u6574\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u8aad\u307f\u3084\u3059\u304f\u4fdd\u5b88\u3057\u3084\u3059\u3044\u3082\u306e\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u914d\u5217\u306f\u72ec\u81ea\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u306e\u3067\u3001\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3068\u306e\u4f5c\u696d\u306b\u306f\u7d71\u4e00\u3055\u308c\u305f\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001\u914d\u5217\u3092\u4f5c\u6210\u3057\u3001\u305d\u308c\u3089\u304c\u4fdd\u6301\u3059\u308b\u5024\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001\u914d\u5217\u5185\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3001\u5909\u66f4\u3001\u524a\u9664\u3057\u3001\u3055\u3089\u306b\u8907\u96d1\u306a\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u8981\u7d20\u3092\u53cd\u5fa9\u51e6\u7406\u3059\u308b\u65b9\u6cd5\u3092\u5b66\u3073\u307e\u3059\u3002<\/p>\n<h2>\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b<\/h2>\n<p>\u6700\u521d\u306b\u3001\u3088\u308a\u8a73\u7d30\u306b\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u4f8b\u3068\u3057\u3066\u3001\u3055\u307e\u3056\u307e\u306a\u30b5\u30e1\u306e\u7a2e\u985e\u306e\u30ea\u30b9\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u914d\u5217\u304c\u306a\u3044\u5834\u5408\u3001\u305d\u308c\u3089\u3092\u500b\u5225\u306e\u5909\u6570\u306b\u683c\u7d0d\u3059\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<div>\u30b7\u30e3\u30fc\u30af\u30ba.rb<\/div>\n<pre class=\"post-pre\"><code>shark1 <span class=\"token operator\">=<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span>\r\nshark2 <span class=\"token operator\">=<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span>\r\nshark3 <span class=\"token operator\">=<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u624b\u6cd5\u306f\u5197\u9577\u3067\u3042\u308a\u3001\u67d4\u8edf\u6027\u306b\u6b20\u3051\u308b\u305f\u3081\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u56f0\u96e3\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002\u3082\u3057\u5225\u306e\u30b7\u30e3\u30fc\u30af\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u3001\u8ffd\u52a0\u306e\u5909\u6570\u3092\u8ffd\u52a0\u3057\u3066\u8ffd\u8de1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u914d\u5217\u3092\u4f7f\u7528\u3059\u308c\u3070\u3001\u3053\u306e\u30c7\u30fc\u30bf\u3092\u7c21\u5358\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Ruby\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b\u306b\u306f\u3001\u89d2\u62ec\u5f27\uff08[]\uff09\u3092\u4f7f\u7528\u3057\u3001\u683c\u7d0d\u3057\u305f\u3044\u5024\u3092\u30b3\u30f3\u30de\u3067\u533a\u5207\u308a\u307e\u3059\u3002<\/p>\n<div>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306f\u3001sharks.rb\u3067\u3059\u3002<\/div>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>3\u3064\u306e\u5225\u3005\u306e\u5909\u6570\u3092\u4f5c\u308b\u4ee3\u308f\u308a\u306b\u3001\u4eca\u3067\u306f3\u3064\u306e\u30b5\u30e1\u3092\u542b\u30801\u3064\u306e\u5909\u6570\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u89d2\u304b\u3063\u3053\uff08[]\uff09\u3092\u4f7f\u7528\u3057\u3066\u914d\u5217\u3092\u4f5c\u6210\u3057\u3001\u5404\u30a8\u30f3\u30c8\u30ea\u3092\u30b3\u30f3\u30de\u3067\u533a\u5207\u308a\u307e\u3057\u305f\u3002\u3082\u3057\u3082\u30461\u5339\u30b5\u30e1\u3092\u8ffd\u52a0\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u5834\u5408\u3001\u65b0\u3057\u3044\u5909\u6570\u3092\u4f5c\u6210\u3057\u3066\u7ba1\u7406\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001\u914d\u5217\u306b\u5225\u306e\u30b5\u30e1\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<p>print\u6587\u3067\u914d\u5217\u5168\u4f53\u3092\u51fa\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u3067\u306f\u3001\u914d\u5217\u306e\u5185\u5bb9\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print sharks\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5404\u30a8\u30f3\u30c8\u30ea\u304c\u5358\u8a9e\u3067\u3042\u308b\u914d\u5217\u3092\u4f5c\u6210\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u5358\u8a9e\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e%w{}\u69cb\u6587\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>days <span class=\"token operator\">=<\/span> <span class=\"token string-literal\"><span class=\"token string\">%w{Monday Tuesday Wednesday Thursday Friday Saturday Sunday}<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u306f\u3001\u89d2\u304b\u3063\u3053\u3092\u4f7f\u3063\u3066\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3068\u540c\u7b49\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>days <span class=\"token operator\">=<\/span>  <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Monday\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tuesday\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Wednesday\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Thursday\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Friday\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Saturday\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Sunday\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u3057\u304b\u3057\u3001%w{}\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u3068\u3001\u5f15\u7528\u7b26\u3068\u30ab\u30f3\u30de\u3092\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u914d\u5217\u306f\u3001\u985e\u4f3c\u3057\u305f\u30c7\u30fc\u30bf\u578b\u306e\u30ea\u30b9\u30c8\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u305f\u3081\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u304c\u3001Ruby\u3067\u306f\u3001\u914d\u5217\u306f\u4efb\u610f\u306e\u5024\u307e\u305f\u306f\u8907\u6570\u306e\u5024\u3092\u542b\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u4ed6\u306e\u914d\u5217\u3082\u542b\u307e\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u6587\u5b57\u5217\u3001nil\u5024\u3001\u6574\u6570\u3001\u304a\u3088\u3073\u6587\u5b57\u5217\u306e\u914d\u5217\u3092\u542b\u3080\u914d\u5217\u306e\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<div>\u6df7\u5408\u30c7\u30fc\u30bf.rb<\/div>\n<pre class=\"post-pre\"><code>record <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span>\r\n    <span class=\"token string-literal\"><span class=\"token string\">\"Sammy\"<\/span><\/span><span class=\"token punctuation\">,<\/span>\r\n    null<span class=\"token punctuation\">,<\/span>\r\n    <span class=\"token number\">7<\/span><span class=\"token punctuation\">,<\/span>\r\n    <span class=\"token punctuation\">[<\/span>\r\n        <span class=\"token string-literal\"><span class=\"token string\">\"another\"<\/span><\/span><span class=\"token punctuation\">,<\/span>\r\n        <span class=\"token string-literal\"><span class=\"token string\">\"array\"<\/span><\/span><span class=\"token punctuation\">,<\/span>\r\n    <span class=\"token punctuation\">]<\/span>\r\n<span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u4eca\u5f8c\u3001\u914d\u5217\u306b\u683c\u7d0d\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u65b9\u6cd5\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<h2>\u914d\u5217\u4e2d\u306e\u9805\u76ee\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/h2>\n<p>\u7279\u5b9a\u306e\u30a2\u30a4\u30c6\u30e0\u307e\u305f\u306f\u914d\u5217\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u305d\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u307e\u305f\u306f\u914d\u5217\u306e\u4f4d\u7f6e\u3092\u53c2\u7167\u3057\u307e\u3059\u3002Ruby\u3067\u306f\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u30bc\u30ed\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002sharks\u914d\u5217\u304b\u3089\u6700\u521d\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u5909\u6570\u306b\u89d2\u30ab\u30c3\u30b3\u3067\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<div>\u300csharks.rb\u300d\u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb<\/div>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u300csharks\u300d\u306e\u914d\u5217\u306b\u306f3\u3064\u306e\u8981\u7d20\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001sharks\u914d\u5217\u306e\u5404\u8981\u7d20\u304c\u3069\u306e\u3088\u3046\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<div>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center;\">Hammerhead<\/th>\n<th style=\"text-align: center;\">Great White<\/th>\n<th style=\"text-align: center;\">Tiger<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center;\">0<\/td>\n<td style=\"text-align: center;\">1<\/td>\n<td style=\"text-align: center;\">2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p>\u914d\u5217\u306e\u6700\u521d\u306e\u8981\u7d20\u306f\u30cf\u30f3\u30de\u30fc\u30d8\u30c3\u30c9\u3067\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f0\u3067\u3059\u3002\u6700\u5f8c\u306e\u8981\u7d20\u306f\u30bf\u30a4\u30ac\u30fc\u3067\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f2\u3067\u3059\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u306f0\u304b\u3089\u6570\u3048\u59cb\u3081\u308b\u305f\u3081\u30011\u304b\u3089\u6570\u3048\u308b\u306e\u304c\u81ea\u7136\u306a\u76f4\u611f\u3068\u306f\u53cd\u5bfe\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u81ea\u7136\u306b\u306a\u308b\u307e\u3067\u3053\u308c\u3092\u610f\u8b58\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">Note<\/p>\n<div>\u6ce8\u610f\uff1a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u30aa\u30d5\u30bb\u30c3\u30c8\u3068\u8003\u3048\u308b\u3068\u3001\u914d\u5217\u306e\u5148\u982d\u304b\u3089\u306e\u5834\u6240\u306e\u6570\u3068\u3057\u3066\u5f79\u7acb\u3064\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u6700\u521d\u306e\u8981\u7d20\u306f\u5148\u982d\u306b\u3042\u308b\u305f\u3081\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u307e\u305f\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f0\u3067\u3059\u30022\u756a\u76ee\u306e\u8981\u7d20\u306f\u3001\u914d\u5217\u306e\u6700\u521d\u306e\u30a8\u30f3\u30c8\u30ea\u304b\u30891\u3064\u96e2\u308c\u305f\u5834\u6240\u306b\u3042\u308b\u305f\u3081\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u307e\u305f\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f1\u3067\u3059\u3002<\/div>\n<\/div>\n<p>\u914d\u5217\u306e\u8981\u7d20\u6570\u306f\u3001length\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u8abf\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">.<\/span>length\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>3<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30cd\u30ba\u30df\u30b6\u30e1\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f0\u304b\u30892\u307e\u3067\u59cb\u307e\u308a\u307e\u3059\u304c\u3001\u9577\u3055\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u914d\u5217\u5185\u306e\u8981\u7d20\u306e\u6570\u3001\u3064\u307e\u308a3\u3092\u8fd4\u3057\u307e\u3059\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u5168\u304f\u95a2\u4fc2\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3082\u3057\u3001\u914d\u5217\u5185\u306e\u7279\u5b9a\u306e\u8981\u7d20\uff08\u4f8b\uff1aTiger\uff09\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3092\u77e5\u308a\u305f\u3044\u5834\u5408\u306f\u3001index() \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>print sharks<span class=\"token punctuation\">.<\/span>index<span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>2<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u308c\u306f\u3001\u305d\u306e\u30c6\u30ad\u30b9\u30c8\u3092\u542b\u3093\u3060\u6700\u521d\u306e\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8fd4\u3057\u307e\u3059\u3002\u5b58\u5728\u3057\u306a\u3044\u5024\u306e\u5834\u5408\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u306fnil\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print sharks<span class=\"token punctuation\">.<\/span>index<span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Whale\"<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>nil<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Ruby\u306e\u914d\u5217\u306e\u6700\u5f8c\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u3001\u30a4\u30f3\u30c7\u30af\u30b9-1\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print sharks<span class=\"token punctuation\">[<\/span><span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&#8220;Tiger&#8221;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Ruby\u3067\u306f\u3001\u6700\u521d\u306e\u8981\u7d20\u3068\u6700\u5f8c\u306e\u8981\u7d20\u3092\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u305b\u305a\u306b\u53d6\u5f97\u3059\u308b\u305f\u3081\u306efirst\u30e1\u30bd\u30c3\u30c9\u3068last\u30e1\u30bd\u30c3\u30c9\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>puts sharks<span class=\"token punctuation\">.<\/span>first\r\nputs sharks<span class=\"token punctuation\">.<\/span>last\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&#8220;Hammerhead&#8221; &#8220;Tiger&#8221;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5b58\u5728\u3057\u306a\u3044\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001nil\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">[<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>nil<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u914d\u5217\u306f\u4ed6\u306e\u914d\u5217\u3092\u542b\u3080\u3053\u3068\u304c\u3067\u304d\u3001\u3053\u308c\u3092\u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u3068\u547c\u3073\u307e\u3059\u3002\u3053\u308c\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u306e\u4e8c\u6b21\u5143\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\u65b9\u6cd5\u306e\u4e00\u3064\u3067\u3059\u3002\u4ee5\u4e0b\u306f\u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u306e\u4f8b\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>nested_array <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span>\r\n    <span class=\"token punctuation\">[<\/span>\r\n        <span class=\"token string-literal\"><span class=\"token string\">\"salmon\"<\/span><\/span><span class=\"token punctuation\">,<\/span>\r\n        <span class=\"token string-literal\"><span class=\"token string\">\"halibut\"<\/span><\/span><span class=\"token punctuation\">,<\/span>\r\n    <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>\r\n    <span class=\"token punctuation\">[<\/span>\r\n        <span class=\"token string-literal\"><span class=\"token string\">\"coral\"<\/span><\/span><span class=\"token punctuation\">,<\/span>\r\n        <span class=\"token string-literal\"><span class=\"token string\">\"reef\"<\/span><\/span><span class=\"token punctuation\">,<\/span>\r\n    <span class=\"token punctuation\">]<\/span>\r\n<span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u5185\u5074\u306e\u914d\u5217\u306b\u5bfe\u5fdc\u3059\u308b\u5225\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u3053\u306e\u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u304b\u3089coral\u3068\u3044\u3046\u5024\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u6b21\u306e\u6587\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print nested_array<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>coral<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001nested_array\u5909\u6570\u306e1\u756a\u76ee\u306e\u4f4d\u7f6e\u306e\u914d\u5217\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3057\u305f\u3002\u305d\u306e\u7d50\u679c\u3001\u914d\u5217[&#8220;coral&#8221;, &#8220;reef&#8221;]\u304c\u8fd4\u3055\u308c\u307e\u3057\u305f\u3002\u6b21\u306b\u3001\u305d\u306e\u914d\u5217\u306e0\u756a\u76ee\u306e\u4f4d\u7f6e\u306b\u3042\u308b\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3057\u305f\u304c\u3001\u305d\u308c\u306f&#8221;coral&#8221;\u3067\u3057\u305f\u3002<\/p>\n<p>\u4eca\u5ea6\u306f\u3001\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/h2>\n<p>\u300c\u3042\u306a\u305f\u306esharks\u914d\u5217\u306b\u306f\u30010\u304b\u30892\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b3\u3064\u306e\u8981\u7d20\u304c\u3042\u308a\u307e\u3059\u300d<\/p>\n<div>\u30b5\u30e1.rb<\/div>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u65b0\u3057\u3044\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002\u6b21\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u3053\u306e\u5834\u5408\u306f3\uff09\u306b\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Whale\"<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n\r\nprint sharks\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Whale&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u306e\u65b9\u6cd5\u306f\u8aa4\u308a\u3092\u72af\u3057\u3084\u3059\u3044\u3067\u3059\u3002\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u9593\u9055\u3048\u3066\u98db\u3070\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u914d\u5217\u306b\u306fnil\u306e\u8981\u7d20\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token string\">\"Sand\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\nprint sharks<span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Whale&#8221;, <mark>nil<\/mark>, &#8220;Sand&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8ffd\u52a0\u306e\u914d\u5217\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u305d\u306e\u5024\u304c\u8fd4\u3055\u308c\u3001\u5024\u306f nil \u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>nil<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u914d\u5217\u5185\u3067\u6b21\u306b\u5229\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u306f\u3001\u8aa4\u308a\u3092\u8d77\u3053\u3057\u3084\u3059\u304f\u8ffd\u52a0\u306e\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u8aa4\u308a\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u306f\u3001push\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u8981\u7d20\u3092\u914d\u5217\u306e\u672b\u5c3e\u306b\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">.<\/span>push<span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Thresher\"<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\nprint sharks\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Whale&#8221;, nil, &#8220;Whale&#8221;, <mark>&#8220;Thresher&#8221;<\/mark>]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306b\u3001\u30d7\u30c3\u30b7\u30e5\u30e1\u30bd\u30c3\u30c9\u306e\u4ee3\u308f\u308a\u306b\u300c&lt;&lt;\u300d\u69cb\u6587\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Bullhead\"<\/span><\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Whale&#8221;, nil, &#8220;Whale&#8221;, &#8220;Thresher&#8221;, <mark>&#8220;Bullhead&#8221;<\/mark>]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u914d\u5217\u306e\u5148\u982d\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f\u3001unshift()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">.<\/span>unshift<span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Angel\"<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\nprint sharks\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[<mark>&#8220;Angel&#8221;<\/mark>, &#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Whale&#8221;, nil, &#8220;Whale&#8221;, &#8220;Thresher&#8221;, &#8220;Bullhead&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8981\u7d20\u306e\u8ffd\u52a0\u65b9\u6cd5\u304c\u308f\u304b\u3063\u305f\u306e\u3067\u3001\u4eca\u5ea6\u306f\u8981\u7d20\u306e\u524a\u9664\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u914d\u5217\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b<\/h2>\n<p>\u7279\u5b9a\u306e\u8981\u7d20\u3092\u914d\u5217\u304b\u3089\u524a\u9664\u3059\u308b\u306b\u306f\u3001delete\u307e\u305f\u306fdelete_at\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002sharks\u914d\u5217\u3067\u3001\u4ee5\u524d\u306bnil\u306e\u914d\u5217\u8981\u7d20\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002\u4eca\u306f\u305d\u308c\u3092\u53d6\u308a\u9664\u304d\u307e\u3059\u3002<\/p>\n<p>\u6700\u521d\u306b\u3001\u914d\u5217\u5185\u306e\u4f4d\u7f6e\u3092\u898b\u3064\u3051\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u306b\u3001index\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print sharks<span class=\"token punctuation\">.<\/span>index<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nil<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>4<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u305d\u306e\u5f8c\u3001delete_at\u3092\u4f7f\u7528\u3057\u3066\u30a4\u30f3\u30c7\u30c3\u30af\u30b94\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u3001\u914d\u5217\u3092\u51fa\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">.<\/span>delete_at<span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span>\r\nprint sharks\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Angel&#8221;, &#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Whale&#8221;, &#8220;Thresher&#8221;, &#8220;Bullhead&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6307\u5b9a\u3057\u305f\u5024\u3068\u4e00\u81f4\u3059\u308b\u8981\u7d20\u3092\u914d\u5217\u304b\u3089\u524a\u9664\u3059\u308b\u524a\u9664\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u914d\u5217\u304b\u3089Whale\u3092\u524a\u9664\u3059\u308b\u305f\u3081\u306b\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">.<\/span>delete<span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Whale\"<\/span><\/span><span class=\"token punctuation\">)<\/span>\r\nprint sharks<span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Angel&#8221;, &#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Thresher&#8221;, &#8220;Bullhead&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4e0e\u3048\u305f\u5024\u306e\u3059\u3079\u3066\u306e\u51fa\u73fe\u7b87\u6240\u3092\u524a\u9664\u3059\u308b\u305f\u3081\u3001delete\u30e1\u30bd\u30c3\u30c9\u306f\u914d\u5217\u5185\u306e\u91cd\u8907\u8981\u7d20\u3082\u3059\u3079\u3066\u524a\u9664\u3057\u307e\u3059\u3002<\/p>\n<p>pop()\u30e1\u30bd\u30c3\u30c9\u306f\u914d\u5217\u306e\u6700\u5f8c\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">.<\/span>pop\r\nprint sharks<span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Angel&#8221;, &#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Thresher&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u914d\u5217\u306e\u6700\u5f8c\u306e\u8981\u7d20\u3068\u3057\u3066\u306eBullhead\u304c\u524a\u9664\u3055\u308c\u307e\u3057\u305f\u3002\u914d\u5217\u306e\u6700\u521d\u306e\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u305f\u3081\u306b\u306f\u3001shift\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks<span class=\"token punctuation\">.<\/span>shift\r\nprint sharks\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Hammerhead&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Thresher&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4eca\u56de\u3001\u30a8\u30f3\u30b8\u30a7\u30eb\u306f\u914d\u5217\u306e\u6700\u521d\u304b\u3089\u524a\u9664\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u914d\u5217\u306e\u5148\u982d\u304a\u3088\u3073\u672b\u5c3e\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001pop\u3068shift\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3067\u304d\u308b\u3060\u3051pop\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u914d\u5217\u306e\u6b8b\u308a\u306e\u8981\u7d20\u306f\u5143\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3092\u4fdd\u6301\u3059\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>delete_at\u3001pop\u3001shift\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3059\u3079\u3066\u5143\u306e\u914d\u5217\u3092\u5909\u66f4\u3057\u3001\u524a\u9664\u3057\u305f\u8981\u7d20\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<div>\u30b7\u30e3\u30fc\u30af\u30b9.rb<\/div>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Whale\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\ndeleted_at_element <span class=\"token operator\">=<\/span> sharks<span class=\"token punctuation\">.<\/span>delete_at<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span>\r\npopped_element <span class=\"token operator\">=<\/span> sharks<span class=\"token punctuation\">.<\/span>pop\r\n\r\nputs <span class=\"token string-literal\"><span class=\"token string\">\"Deleted_at element: <\/span><span class=\"token interpolation\"><span class=\"token delimiter punctuation\">#{<\/span><span class=\"token content\">deleted_at_element<\/span><span class=\"token delimiter punctuation\">}<\/span><\/span><span class=\"token string\">\"<\/span><\/span>\r\nputs <span class=\"token string-literal\"><span class=\"token string\">\"Popped element: <\/span><span class=\"token interpolation\"><span class=\"token delimiter punctuation\">#{<\/span><span class=\"token content\">popped_element<\/span><span class=\"token delimiter punctuation\">}<\/span><\/span><span class=\"token string\">\"<\/span><\/span>\r\n\r\nputs <span class=\"token string-literal\"><span class=\"token string\">\"Remaining array: <\/span><span class=\"token interpolation\"><span class=\"token delimiter punctuation\">#{<\/span><span class=\"token content\">sharks<\/span><span class=\"token delimiter punctuation\">}<\/span><\/span><span class=\"token string\">\"<\/span><\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Deleted_at element: Great White Popped element: Whale Remaining array: [&#8220;Hammerhead&#8221;, &#8220;Tiger&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3042\u306a\u305f\u306f\u4eca\u3001\u914d\u5217\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u65b9\u6cd5\u3092\u77e5\u3063\u3066\u3044\u307e\u3059\u3002\u4eca\u5ea6\u306f\u3001\u65e2\u306b\u6301\u3063\u3066\u3044\u308b\u8981\u7d20\u3092\u3069\u306e\u3088\u3046\u306b\u5909\u66f4\u3059\u308b\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u914d\u5217\u5185\u306e\u65e2\u5b58\u306e\u8981\u7d20\u306e\u4fee\u6b63<\/h2>\n<p>\u914d\u5217\u306e\u8981\u7d20\u3092\u66f4\u65b0\u3059\u308b\u306b\u306f\u3001\u901a\u5e38\u306e\u5909\u6570\u3068\u540c\u3058\u3088\u3046\u306b\u4ee3\u5165\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u3001\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u65b0\u3057\u3044\u5024\u3092\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n<p>\u65b0\u3057\u3044\u30b5\u30e1\u306e\u914d\u5217\u304c\u4e0e\u3048\u3089\u308c\u305f\u5834\u5408\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b90\u306e\u300c\u30cf\u30f3\u30de\u30fc\u30d8\u30c3\u30c9\u300d\u3092\u300c\u30a8\u30f3\u30b8\u30a7\u30eb\u300d\u306b\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Whale\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\nsharks<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Angel\"<\/span><\/span>\r\nprint sharks<span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[&#8220;Angel&#8221;, &#8220;Great White&#8221;, &#8220;Tiger&#8221;, &#8220;Whale&#8221;]<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8981\u7d20\u3092\u6b63\u3057\u304f\u66f4\u65b0\u3059\u308b\u305f\u3081\u306b\u3001\u524a\u9664\u3057\u305f\u3044\u8981\u7d20\u3092\u898b\u3064\u3051\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u305f\u3088\u3046\u306b\u3001\u6700\u521d\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u305d\u306e\u8981\u7d20\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4eca\u304b\u3089\u3001\u914d\u5217\u306e\u8981\u7d20\u3059\u3079\u3066\u3068\u3069\u306e\u3088\u3046\u306b\u4f5c\u696d\u3059\u308b\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>\u914d\u5217\u3092\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3059\u308b<\/h2>\n<p>Ruby\u306b\u306f\u914d\u5217\u3092\u53cd\u5fa9\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u591a\u304f\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4f7f\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u884c\u3044\u305f\u3044\u4f5c\u696d\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u6b21\u306b\u3001\u914d\u5217\u3092\u53cd\u5fa9\u51e6\u7406\u3057\u3066\u5404\u8981\u7d20\u3092\u8868\u793a\u3059\u308b\u65b9\u6cd5\u3092\u63a2\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>Ruby\u3067\u306f\u3001for..in\u69cb\u6587\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Whale\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\n<span class=\"token keyword\">for<\/span> shark <span class=\"token keyword\">in<\/span> sharks <span class=\"token keyword\">do<\/span>\r\n  puts shark\r\n<span class=\"token keyword\">end<\/span>\r\n<\/code><\/pre>\n<p>sharks\u914d\u5217\u306e\u5404\u8981\u7d20\u306b\u5bfe\u3057\u3066\u3001Ruby\u306f\u305d\u306e\u8981\u7d20\u3092\u30ed\u30fc\u30ab\u30eb\u5909\u6570shark\u306b\u5272\u308a\u5f53\u3066\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001puts\u3092\u4f7f\u7528\u3057\u3066\u8981\u7d20\u306e\u5024\u3092\u51fa\u529b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001for..in \u3092\u3042\u307e\u308a\u983b\u7e41\u306b\u306f\u898b\u307e\u305b\u3093\u3002Ruby\u306e\u914d\u5217\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308a\u3001\u8981\u7d20\u3092\u53d6\u308a\u6271\u3046\u305f\u3081\u306b each \u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002each \u30e1\u30bd\u30c3\u30c9\u306f\u3001for..in \u3068\u4f3c\u305f\u3088\u3046\u306a\u52d5\u4f5c\u3092\u3057\u307e\u3059\u304c\u3001\u7570\u306a\u308b\u69cb\u6587\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<div>\u5404\u3005.rb<\/div>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Whale\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\nsharks<span class=\"token punctuation\">.<\/span><span class=\"token keyword\">each<\/span> <span class=\"token keyword\">do<\/span> <span class=\"token operator\">|<\/span>shark<span class=\"token operator\">|<\/span>\r\n  puts shark\r\n<span class=\"token keyword\">end<\/span>\r\n<\/code><\/pre>\n<p>each\u30e1\u30bd\u30c3\u30c9\u306f\u3001Ruby\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u3088\u304f\u898b\u304b\u3051\u308b\u69cb\u6587\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u305d\u308c\u306fRuby\u306e\u30d6\u30ed\u30c3\u30af\u3092\u5f15\u6570\u3068\u3057\u3066\u53d6\u308a\u307e\u3059\u3002\u30d6\u30ed\u30c3\u30af\u3068\u306f\u3001\u305d\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u5f8c\u3067\u5b9f\u884c\u3055\u308c\u308b\u3044\u304f\u3064\u304b\u306e\u30b3\u30fc\u30c9\u3067\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u30b3\u30fc\u30c9\u306fputs shark\u3067\u3059\u3002\u30d1\u30a4\u30d7\u6587\u5b57\uff08|\uff09\u3067\u56f2\u307e\u308c\u305fshark\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u3001\u30d6\u30ed\u30c3\u30af\u304c\u30a2\u30af\u30bb\u30b9\u3059\u308b\u914d\u5217\u5185\u306e\u8981\u7d20\u3092\u8868\u3059\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u3067\u3059\u3002Ruby\u306f\u3053\u306e\u5909\u6570\u306b\u8981\u7d20\u3092\u5272\u308a\u5f53\u3066\u3001\u30d6\u30ed\u30c3\u30af\u5185\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002each\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u914d\u5217\u5185\u306e\u5404\u8981\u7d20\u306b\u5bfe\u3057\u3066\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u7e70\u308a\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Hammerhead Great White Tiger Whale<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30d6\u30ed\u30c3\u30af\u304c\u5358\u4e00\u884c\u306e\u5834\u5408\u3001Ruby\u306e\u958b\u767a\u8005\u306f\u3057\u3070\u3057\u3070do\u3068end\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4e2d\u62ec\u5f27\u3067\u7f6e\u304d\u63db\u3048\u3001\u6587\u5168\u4f53\u30921\u884c\u306b\u7e2e\u3081\u307e\u3059\u3002<\/p>\n<div>\u5404.rb<\/div>\n<pre class=\"post-pre\"><code><span class=\"token operator\">...<\/span>\r\nsharks<span class=\"token punctuation\">.<\/span><span class=\"token keyword\">each<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token operator\">|<\/span>shark<span class=\"token operator\">|<\/span> puts shark <span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u306f\u540c\u3058\u7d50\u679c\u3092\u51fa\u3059\u304c\u3001\u30b3\u30fc\u30c9\u306e\u884c\u6570\u304c\u5c11\u306a\u304f\u306a\u308b\u3088\u3046\u306b\u4f5c\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u65e5\u672c\u8a9e\u3067\u8ff0\u3079\u76f4\u3057\u3066\u307f\u307e\u3057\u305f\uff1a<\/p>\n<p>each_with_index\u30e1\u30bd\u30c3\u30c9\u306f\u4f3c\u305f\u3088\u3046\u306a\u65b9\u6cd5\u3067\u52d5\u4f5c\u3057\u307e\u3059\u304c\u3001\u914d\u5217\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u3082\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306feach_with_index\u3092\u4f7f\u7528\u3057\u3066\u3001\u5404\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u5024\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n<div>\u305d\u308c\u305e\u308c\u306e\u8981\u7d20\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u793a\u3059each_with_index.rb<\/div>\n<pre class=\"post-pre\"><code>sharks <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Hammerhead\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Great White\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Tiger\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Whale\"<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\nsharks<span class=\"token punctuation\">.<\/span>each_with_index <span class=\"token keyword\">do<\/span> <span class=\"token operator\">|<\/span>shark<span class=\"token punctuation\">,<\/span> index<span class=\"token operator\">|<\/span>\r\n  puts <span class=\"token string-literal\"><span class=\"token string\">\"The index is <\/span><span class=\"token interpolation\"><span class=\"token delimiter punctuation\">#{<\/span><span class=\"token content\">index<\/span><span class=\"token delimiter punctuation\">}<\/span><\/span><span class=\"token string\">\"<\/span><\/span>\r\n  puts <span class=\"token string-literal\"><span class=\"token string\">\"The value is <\/span><span class=\"token interpolation\"><span class=\"token delimiter punctuation\">#{<\/span><span class=\"token content\">shark<\/span><span class=\"token delimiter punctuation\">}<\/span><\/span><span class=\"token string\">\"<\/span><\/span>\r\n<span class=\"token keyword\">end<\/span>\r\n<\/code><\/pre>\n<p>\u914d\u5217\u306e\u5404\u8981\u7d20\u306b\u5bfe\u3057\u3066\u3001Ruby\u306f\u8981\u7d20\u3092\u5909\u6570shark\u306b\u4ee3\u5165\u3057\u3001\u73fe\u5728\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092index\u5909\u6570\u306b\u4ee3\u5165\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u30d6\u30ed\u30c3\u30af\u5185\u3067\u3053\u308c\u3089\u306e\u5909\u6570\u306e\u4e21\u65b9\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>The index is 0 The value is Hammerhead The index is 1 The value is Great White The index is 2 The value is Tiger The index is 3 The value is Whale<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u81ea\u5206\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u9805\u76ee\u3092\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u8868\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3084\u3001\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u884c\u3092\u8aad\u307f\u8fbc\u3093\u3067\u305d\u306e\u5185\u5bb9\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306a\u3069\u3001\u983b\u7e41\u306b\u914d\u5217\u306e\u8981\u7d20\u3092\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u914d\u5217\u306f\u3001Ruby\u3067\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u975e\u5e38\u306b\u591a\u6a5f\u80fd\u3067\u57fa\u672c\u7684\u306a\u90e8\u5206\u3067\u3059\u3002\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001\u914d\u5217\u3092\u4f5c\u6210\u3057\u3001\u500b\u3005\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3057\u305f\u3002\u307e\u305f\u3001\u914d\u5217\u5185\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3001\u524a\u9664\u3001\u4fee\u6b63\u3057\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u3001\u914d\u5217\u3092\u53cd\u5fa9\u51e6\u7406\u3057\u3001\u305d\u306e\u5185\u5bb9\u3092\u8868\u793a\u3059\u308b2\u3064\u306e\u65b9\u6cd5\u3092\u63a2\u7d22\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u30c7\u30fc\u30bf\u3092\u8868\u793a\u3059\u308b\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>Ruby\u306e\u30c7\u30fc\u30bf\u578b\u306b\u3064\u3044\u3066\u5b66\u3076\u306b\u306f\u3001\u300cUnderstanding Data Types in Ruby\u300d\u3068\u3044\u3046\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092\u8aad\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b \u914d\u5217\u306f\u8981\u7d20\u3068\u547c\u3070\u308c\u308b\u5024\u306e\u30ea\u30b9\u30c8\u3092\u8868\u3059\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u3002\u914d\u5217\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u8907\u6570\u306e\u5024\u30921\u3064\u306e\u5909\u6570\u306b\u683c\u7d0d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Ruby\u3067\u306f\u3001\u914d\u5217\u306f\u6570\u5024\u3001\u6587\u5b57\u5217\u3001\u304a\u3088\u3073\u4ed6\u306eRuby\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u3069\u3001\u4efb\u610f\u306e\u30c7\u30fc\u30bf\u578b\u3092\u542b\u3080 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