{"id":28,"date":"2023-03-11T18:34:03","date_gmt":"2023-01-31T07:45:22","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/ruby%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e3%83%87%e3%83%bc%e3%82%bf%e5%9e%8b%e3%81%ae%e7%90%86%e8%a7%a3\/"},"modified":"2025-07-31T10:54:46","modified_gmt":"2025-07-31T01:54:46","slug":"ruby%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e3%83%87%e3%83%bc%e3%82%bf%e5%9e%8b%e3%81%ae%e7%90%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/ruby%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e3%83%87%e3%83%bc%e3%82%bf%e5%9e%8b%e3%81%ae%e7%90%86%e8%a7%a3\/","title":{"rendered":"Ruby\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u578b\u306e\u7406\u89e3"},"content":{"rendered":"<h3>\u4ee5\u4e0b\u306e\u6587\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\u306f\u4e00\u3064\u3060\u3051\uff09\uff1a<br \/>\n\u300cIntroduction\u300d<\/h3>\n<p>\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f\u969b\u306b\u306f\u3001\u30c7\u30fc\u30bf\u578b\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u3092\u5206\u985e\u3057\u307e\u3059\u3002\u30c7\u30fc\u30bf\u578b\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u3092\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\u3059\u308b\u304b\u3092\u4f1d\u3048\u307e\u3059\u3002\u307e\u305f\u3001\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u4f55\u304c\u3067\u304d\u308b\u306e\u304b\u3082\u6c7a\u5b9a\u3057\u3001\u3069\u306e\u64cd\u4f5c\u3092\u884c\u3048\u308b\u304b\u3082\u5b9a\u3081\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u578b\u306b\u3064\u3044\u3066\u8003\u3048\u308b\u4e00\u3064\u306e\u65b9\u6cd5\u306f\u3001\u73fe\u5b9f\u4e16\u754c\u3067\u4f7f\u7528\u3059\u308b\u3055\u307e\u3056\u307e\u306a\u30c7\u30fc\u30bf\u306e\u7a2e\u985e\u3092\u8003\u616e\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u6211\u3005\u306f\u6574\u6570\uff080\u30011\u30012\u3001\u2026\uff09\u3001\u8ca0\u306e\u6574\u6570\uff08\u2026\u3001-1\u30010\u30011\u3001\u2026\uff09\u3001\u305d\u3057\u3066\u7121\u7406\u6570\uff08\u03c0\uff09\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u901a\u5e38\u3001\u6570\u5b66\u3067\u306f\u7570\u306a\u308b\u30bf\u30a4\u30d7\u306e\u6570\u3092\u7d44\u307f\u5408\u308f\u305b\u3001\u4f55\u3089\u304b\u306e\u7b54\u3048\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u30015\u306b\u03c0\u3092\u8db3\u3057\u305f\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>5 + \u03c0\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u307e\u3059\uff1a<br \/>\n\u79c1\u305f\u3061\u306f\u65b9\u7a0b\u5f0f\u3092\u305d\u306e\u307e\u307e\u4f7f\u3063\u3066\u7121\u7406\u6570\u3092\u8003\u616e\u3057\u305f\u7b54\u3048\u3068\u3059\u308b\u304b\u3001\u03c0\u3092\u5c11\u6570\u6841\u306b\u4e38\u3081\u3066\u304b\u3089\u6570\u5b57\u3092\u8db3\u3059\u304b\u306e\u3069\u3061\u3089\u304b\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>5 + \u03c0 = 5 + 3.14 = 8.14\r\n<\/code><\/pre>\n<p>\u305f\u3060\u3057\u3001\u3082\u3057\u79c1\u305f\u3061\u304c\u5358\u8a9e\u306a\u3069\u306e\u5225\u306e\u30c7\u30fc\u30bf\u578b\u3067\u6570\u5b57\u3092\u8a55\u4fa1\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u4e8b\u614b\u306f\u5c11\u3057\u308f\u304b\u308a\u3065\u3089\u304f\u306a\u308a\u307e\u3059\u3002\u6b21\u306e\u65b9\u7a0b\u5f0f\u3092\u3069\u306e\u3088\u3046\u306b\u89e3\u6c7a\u3059\u308c\u3070\u3044\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<pre class=\"post-pre\"><code>sky + 8\r\n<\/code><\/pre>\n<p>\u3053\u308c\u306f\u3001\u5373\u5ea7\u306b\u89e3\u6c7a\u65b9\u6cd5\u304c\u308f\u304b\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u3082\u540c\u69d8\u3067\u3001\u30c7\u30fc\u30bf\u304c\u7570\u306a\u308b\u4e8c\u3064\u306e\u578b\u3092\u6301\u3063\u3066\u3044\u308b\u305f\u3081\u306b\u89e3\u6c7a\u3067\u304d\u307e\u305b\u3093\u3002\u300c\u7a7a\u300d\u3068\u3044\u3046\u306e\u306f\u5358\u8a9e\u3067\u3042\u308a\u30018\u306f\u6574\u6570\u3067\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f\u969b\u306b\u306f\u3001\u5024\u306e\u5272\u308a\u5f53\u3066\u3084\u52a0\u6e1b\u4e57\u9664\u306a\u3069\u306e\u51e6\u7406\u65b9\u6cd5\u306b\u614e\u91cd\u306b\u53d6\u308a\u7d44\u307e\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001Ruby\u306b\u56fa\u6709\u306e\u6700\u3082\u91cd\u8981\u306a\u30c7\u30fc\u30bf\u578b\u3067\u3042\u308b\u6574\u6570\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3001\u6587\u5b57\u5217\u3001\u30b7\u30f3\u30dc\u30eb\u3001\u914d\u5217\u3001\u30cf\u30c3\u30b7\u30e5\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3059\u3002\u3053\u308c\u306f\u30c7\u30fc\u30bf\u578b\u306e\u5fb9\u5e95\u7684\u306a\u8abf\u67fb\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u5229\u7528\u3067\u304d\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u6163\u308c\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u5f8c\u3001\u52d5\u7684\u306a\u578b\u306b\u3064\u3044\u3066\u63a2\u6c42\u3057\u307e\u3059\u3002Ruby\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u5909\u6570\u306e\u4e2d\u8eab\u306b\u57fa\u3065\u3044\u3066\u30c7\u30fc\u30bf\u578b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u52d5\u7684\u306a\u578b\u4ed8\u3051\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u81ea\u5206\u81ea\u8eab\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4e2d\u3067\u30c8\u30ea\u30c3\u30ad\u30fc\u306a\u72b6\u6cc1\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u5909\u6570\u306b\u306f\u4efb\u610f\u306e\u5024\u304c\u683c\u7d0d\u3055\u308c\u308b\u305f\u3081\u3001\u5909\u6570\u306e\u30c7\u30fc\u30bf\u578b\u3092\u7279\u5b9a\u3059\u308b\u65b9\u6cd5\u3082\u5b66\u3076\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u3001Ruby\u3067\u6574\u6570\u3092\u6271\u3046\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u6574\u6570<\/h2>\n<p>\u6570\u5b66\u306e\u3088\u3046\u306b\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306f\u6574\u6570\u306f\u6b63\u306e\u6570\u3001\u8ca0\u306e\u6570\u3001\u307e\u305f\u306f0\uff08\u2026\u3001-1\u30010\u30011\u3001\u2026\uff09\u3068\u306a\u308b\u5168\u4f53\u306e\u6570\u3067\u3059\u3002\u6574\u6570\u306f\u4e00\u822c\u7684\u306bint\u3068\u3057\u3066\u3082\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u6574\u6570\u3092\u5370\u5237\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print <span class=\"token operator\">-<\/span><span class=\"token number\">25<\/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>-25<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5909\u6570\u306b\u6574\u6570\u3092\u683c\u7d0d\u3057\u3001\u5909\u6570\u3092\u53c2\u7167\u3057\u3066\u5024\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>my_int <span class=\"token operator\">=<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">25<\/span>\r\nprint my_int\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>-25<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6574\u6570\u3067\u3082\u6570\u5b66\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u30012\u3064\u306e\u6570\u306e\u5408\u8a08\u3092\u8a08\u7b97\u3057\u3066\u7d50\u679c\u3092\u51fa\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sum <span class=\"token operator\">=<\/span> <span class=\"token number\">116<\/span> <span class=\"token operator\">-<\/span> <span class=\"token number\">68<\/span>\r\nprint sum\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>48<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5927\u304d\u306a\u6570\u3092\u66f8\u304f\u5834\u5408\u3001\u8aad\u307f\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u306b\u30ab\u30f3\u30de\u3092\u4f7f\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u300c\u4e00\u767e\u4e07\u300d\u3092\u8868\u3059\u305f\u3081\u306b1,000,000\u3068\u66f8\u304d\u307e\u3059\u3002\u30b3\u30fc\u30c9\u3067\u306f\u30ab\u30f3\u30de\u306f\u4f7f\u3048\u307e\u305b\u3093\u304c\u3001Ruby\u3067\u306f\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2(_)\u3092\u4f7f\u3063\u3066\u5927\u304d\u306a\u6570\u3092\u3088\u308a\u8aad\u307f\u3084\u3059\u304f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002 (Tameshite mite kudasai.)<\/p>\n<div>\u5927\u91cf\u306e\u6570\u5b57.rb<\/div>\n<pre class=\"post-pre\"><code>large_number <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span>_234_567\r\nprint large_number\r\n<\/code><\/pre>\n<p>\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2\u306a\u3057\u3067\u6574\u6570\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002 (And\u0101sukoa nashi de seishitsu ga hy\u014dji sa remasu.)<\/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>1234567<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2\u3092\u4f7f\u3048\u3070\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u3067\u5927\u304d\u306a\u6570\u5024\u3092\u8868\u73fe\u3059\u308b\u969b\u306b\u3001\u3088\u308a\u8aad\u307f\u3084\u3059\u3044\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u307e\u3059\u3002<\/p>\n<p>Ruby\u8a00\u8a9e\u306b\u3064\u3044\u3066\u5b66\u3076\u3053\u3068\u3067\u3001\u6574\u6570\u3068\u306e\u53d6\u308a\u6271\u3044\u306b\u95a2\u3057\u3066\u591a\u304f\u306e\u6a5f\u4f1a\u304c\u5897\u3048\u308b\u3067\u3057\u3087\u3046\u3002\u3055\u3066\u3001\u5b9f\u6570\u3068\u306e\u53d6\u308a\u6271\u3044\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570<\/h2>\n<p>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u307e\u305f\u306f\u30d5\u30ed\u30fc\u30c8\u306f\u5b9f\u6570\u3092\u8868\u3057\u307e\u3059\u3002\u5b9f\u6570\u306f\u6709\u7406\u6570\u307e\u305f\u306f\u7121\u7406\u6570\u306e\u3069\u3061\u3089\u304b\u3067\u3059\u3002\u6709\u7406\u6570\u3084\u7121\u7406\u6570\u306e\u3088\u3046\u306b\u5206\u6570\u90e8\u5206\u3092\u542b\u3080\u6570\u3001\u4f8b\u3048\u30709.0\u3084-116.42\u306e\u3088\u3046\u306a\u6570\u3067\u3059\u3002\u8a00\u3044\u63db\u3048\u308b\u3068\u3001Ruby\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u3067\u306e\u30d5\u30ed\u30fc\u30c8\u306f\u5c0f\u6570\u70b9\u3092\u542b\u3080\u6570\u5024\u3067\u3059\u3002<\/p>\n<p>Ruby\u3067\u306f\u3001\u6574\u6570\u3092\u51fa\u529b\u3059\u308b\u3088\u3046\u306b\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3082\u51fa\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print <span class=\"token number\">17.3<\/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>17.3<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5909\u6570\u3092\u5ba3\u8a00\u3057\u3001float\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>my_float <span class=\"token operator\">=<\/span> <span class=\"token number\">17.3<\/span>\r\nprint my_float\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>17.3<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u305d\u3057\u3066\u3001\u6574\u6570\u3068\u540c\u69d8\u306b\u3001Ruby\u3067\u306f\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3067\u3082\u8a08\u7b97\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sum <span class=\"token operator\">=<\/span> <span class=\"token number\">564.0<\/span> <span class=\"token operator\">+<\/span> <span class=\"token number\">365.24<\/span>\r\nprint sum\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>929.24<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Ruby\u3067\u6574\u6570\u306b\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3092\u52a0\u7b97\u3059\u308b\u3068\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sum <span class=\"token operator\">=<\/span> <span class=\"token number\">564<\/span> <span class=\"token operator\">+<\/span> <span class=\"token number\">365.24<\/span>\r\nprint sum\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>929.24<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30eb\u30d3\u30fc\u3067\u306f\u3001\u5c0f\u6570\u70b9\u4ee5\u4e0b\u304c\u306a\u3044\u6570\uff08\u4f8b\uff1a138\uff09\u306f\u6574\u6570\u3068\u3057\u3066\u6271\u308f\u308c\u3001\u5c0f\u6570\u70b9\u4ee5\u4e0b\u304c\u3042\u308b\u6570\uff08\u4f8b\uff1a138.0\uff09\u306f\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u3001Ruby\u3067\u306e\u30d6\u30fc\u30eb\u5024\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u771f\u507d\u5024\u30c7\u30fc\u30bf\u578b (\u3057\u3093\u304e\u3061\u30c7\u30fc\u30bf\u304c\u305f)<\/h2>\n<p>\u30d6\u30fc\u30eb\u5024\u306f\u3001\u6570\u5b66\u306e\u8ad6\u7406\u5206\u91ce\u306b\u95a2\u9023\u3059\u308b\u771f\u507d\u5024\u3092\u8868\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u305d\u308c\u306f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u79d1\u5b66\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002Ruby\u3067\u306f\u3001\u3053\u306e\u30c7\u30fc\u30bf\u578b\u306f\u771f\uff08true\uff09\u307e\u305f\u306f\u507d\uff08false\uff09\u306e\u3044\u305a\u308c\u304b\u306e\u5024\u3067\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u6570\u5b66\u306e\u591a\u304f\u306e\u64cd\u4f5c\u306f\u3001\u771f\u307e\u305f\u306f\u507d\u3068\u8a55\u4fa1\u3055\u308c\u308b\u7b54\u3048\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li>greater than<\/li>\n<li>500 &gt; 100 true<\/li>\n<li>1 &gt; 5 false<\/li>\n<li>less than<\/li>\n<li>200 &lt; 400 true<\/li>\n<li>4 &lt; 2 false<\/li>\n<li>equal<\/li>\n<li>5 = 5 true<\/li>\n<li>500 = 400 false<\/li>\n<\/ul>\n<p>\u6570\u5b57\u306e\u3088\u3046\u306b\u3001\u5909\u6570\u306b\u306f\u771f\u307e\u305f\u306f\u507d\u306e\u5024\u3092\u4fdd\u5b58\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>result = 5 &gt; 8\r\n<\/code><\/pre>\n<p>\u305d\u308c\u304b\u3089\u3001print()\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u30d6\u30fc\u30eb\u5024\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print result\r\n<\/code><\/pre>\n<p>5\u304c8\u3088\u308a\u3082\u5927\u304d\u304f\u306a\u3044\u306e\u3067\u3001\u6b21\u306e\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\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>false<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Ruby\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u3082\u3063\u3068\u66f8\u304f\u3046\u3061\u306b\u3001\u30d6\u30fc\u30eb\u5024\u306e\u50cd\u304d\u3084\u7570\u306a\u308b\u95a2\u6570\u3084\u6f14\u7b97\u304ctrue\u307e\u305f\u306ffalse\u3092\u8a55\u4fa1\u3059\u308b\u3053\u3068\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u9032\u884c\u304c\u5909\u308f\u308b\u3053\u3068\u306b\u6163\u308c\u3066\u3044\u304f\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u6b21\u306b\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u30c6\u30ad\u30b9\u30c8\u3092\u6271\u3046\u65b9\u6cd5\u3092\u63a2\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u30b9\u30c8\u30ea\u30f3\u30b0\u30b9<\/h2>\n<p>\u6587\u5b57\u5217\u306f\u3001\u6587\u5b57\u3001\u6570\u5b57\u3001\u304a\u3088\u3073\u8a18\u53f7\u306a\u3069\u306e1\u3064\u4ee5\u4e0a\u306e\u6587\u5b57\u3067\u69cb\u6210\u3055\u308c\u308b\u30b7\u30fc\u30b1\u30f3\u30b9\u3067\u3059\u3002Ruby\u3067\u306f\u3001\u6587\u5b57\u5217\u306f\u4e3b\u306b\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\uff08&#8217;\uff09\u307e\u305f\u306f\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8\uff08&#8221;\uff09\u3067\u56f2\u3063\u3066\u4f5c\u6210\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u6587\u5b57\u5217\u3092\u4f5c\u6210\u3059\u308b\u306b\u306f\u3001\u5f15\u7528\u7b26\u3067\u6587\u5b57\u306e\u30b7\u30fc\u30b1\u30f3\u30b9\u3092\u56f2\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token string-literal\"><span class=\"token string\">\"This is a string in double quotes.\"<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u5c0f\u3055\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u300cHello, World\uff01\u300d\u306f\u3001\u30d5\u30ec\u30fc\u30baHello, World!\u3092\u69cb\u6210\u3059\u308b\u6587\u5b57\u3092\u6587\u5b57\u5217\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print <span class=\"token string-literal\"><span class=\"token string\">\"Hello, World!\"<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u4ed6\u306e\u30c7\u30fc\u30bf\u578b\u3068\u540c\u69d8\u306b\u3001\u6587\u5b57\u5217\u3092\u5909\u6570\u306b\u683c\u7d0d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>output <span class=\"token operator\">=<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Hello, World!\"<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u5909\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u3001\u6587\u5b57\u5217\u3092\u51fa\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>print output\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>Hello, World!<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6570\u5b57\u306e\u3088\u3046\u306b\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u3067\u6587\u5b57\u5217\u306b\u5bfe\u3057\u3066\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u591a\u304f\u306e\u64cd\u4f5c\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u64cd\u4f5c\u3092\u4f7f\u7528\u3057\u3066\u3001\u6c42\u3081\u3066\u3044\u308b\u7d50\u679c\u3092\u5f97\u308b\u305f\u3081\u306b\u6587\u5b57\u5217\u3092\u64cd\u4f5c\u3057\u307e\u3059\u3002\u6587\u5b57\u5217\u306f\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u60c5\u5831\u306e\u4f1d\u9054\u3084\u3001\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u30d7\u30ed\u30b0\u30e9\u30e0\u3078\u306e\u60c5\u5831\u306e\u4f1d\u9054\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u6642\u306b\u306f\u3001\u30c7\u30fc\u30bf\u306e\u30ea\u30b9\u30c8\u3092\u6271\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\u914d\u5217\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<h2>\u914d\u5217<\/h2>\n<p>\u914d\u5217\u306f1\u3064\u306e\u5909\u6570\u5185\u306b\u8907\u6570\u306e\u5024\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u914d\u5217\u5185\u306b\u5024\u306e\u30ea\u30b9\u30c8\u3092\u683c\u7d0d\u3057\u3001\u305d\u308c\u3089\u3092\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u914d\u5217\u5185\u306e\u305d\u308c\u305e\u308c\u306e\u9805\u76ee\u3084\u5024\u306f\u8981\u7d20\u3068\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p>\u914d\u5217\u306f\u3001\u30ab\u30f3\u30de\u3067\u533a\u5207\u3089\u308c\u305f\u89d2\u62ec\u5f27[ ]\u5185\u306e\u5024\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u6574\u6570\u306e\u914d\u5217\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u898b\u3048\u307e\u3059\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">[<\/span><span class=\"token operator\">-<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u306e\u914d\u5217\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">[<\/span><span class=\"token number\">3.14<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">9.23<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">111.11<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">312.12<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1.05<\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u306f\u6587\u5b57\u5217\u306e\u30ea\u30b9\u30c8\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'shark'<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">'cuttlefish'<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">'squid'<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">'mantis shrimp'<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u4ed6\u306e\u30c7\u30fc\u30bf\u578b\u3068\u540c\u69d8\u306b\u3001\u5909\u6570\u306b\u914d\u5217\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>sea_creatures <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'shark'<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">'cuttlefish'<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">'squid'<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">'mantis shrimp'<\/span><\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u5909\u6570\u3092\u51fa\u529b\u3059\u308b\u3068\u3001\u4f5c\u6210\u3057\u305f\u914d\u5217\u3068\u5168\u304f\u540c\u3058\u51fa\u529b\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print sea_creatures\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>['shark', 'cuttlefish', 'squid', 'mantis shrimp']\r\n<\/code><\/pre>\n<p>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3092\u4f7f\u3063\u3066\u30010\u304b\u3089\u59cb\u307e\u308b\u756a\u53f7\u3092\u4f7f\u3063\u3066\u914d\u5217\u5185\u306e\u500b\u3005\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>puts sea_creatures<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token comment\"># shark<\/span>\r\nputs sea_creatures<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token comment\"># squid<\/span>\r\n<\/code><\/pre>\n<p>\u6700\u5f8c\u306e\u5024\u3092\u5370\u5237\u3059\u308b\u306b\u306f\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9-1\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Ruby\u3067\u306f\u3001\u305d\u308c\u305e\u308c\u6700\u521d\u3068\u6700\u5f8c\u306e\u30a8\u30f3\u30c8\u30ea\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306e.first\u30e1\u30bd\u30c3\u30c9\u3068.last\u30e1\u30bd\u30c3\u30c9\u3082\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>puts sea_creatures<span class=\"token punctuation\">.<\/span>first <span class=\"token comment\"># shark<\/span>\r\nputs sea_creatures<span class=\"token punctuation\">.<\/span>last <span class=\"token comment\"># mantis shrimp<\/span>\r\n<\/code><\/pre>\n<p>Ruby\u306e\u914d\u5217\u306f\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6587\u5b57\u5217\u3001\u30b7\u30f3\u30dc\u30eb\u3001\u305d\u3057\u3066\u4ed6\u306e\u914d\u5217\u3055\u3048\u3082\u914d\u5217\u306b\u683c\u7d0d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>record <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span>\r\n<span class=\"token symbol\">:en<\/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<span class=\"token number\">42<\/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>\r\n<span class=\"token punctuation\">]<\/span>\r\n<span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>Ruby\u306e\u914d\u5217\u306f\u53ef\u5909\u3067\u3042\u308a\u3001\u3064\u307e\u308a\u914d\u5217\u306b\u5024\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3001\u5024\u3092\u524a\u9664\u3057\u305f\u308a\u3001\u914d\u5217\u306e\u4e2d\u306e\u30a8\u30f3\u30c8\u30ea\u3092\u5909\u66f4\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u3067\u7269\u4e8b\u306b\u30e9\u30d9\u30eb\u3092\u4ed8\u3051\u308b\u65b9\u6cd5\u304c\u5fc5\u8981\u306a\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u304c\u30b7\u30f3\u30dc\u30eb\u306e\u5f79\u5272\u3067\u3059\u3002<\/p>\n<h2>\u30b7\u30f3\u30dc\u30eb<\/h2>\n<p>\u30b7\u30f3\u30dc\u30eb\u306f\u3001Ruby\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u30e9\u30d9\u30eb\u3084\u8b58\u5225\u5b50\u306e\u3088\u3046\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u7279\u6b8a\u306a\u30c7\u30fc\u30bf\u578b\u3067\u3059\u3002\u30b7\u30f3\u30dc\u30eb\u306f\u4e0d\u5909\u3067\u3042\u308a\u3001\u5909\u66f4\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u30b7\u30f3\u30dc\u30eb\u306f\u5024\u306e\u306a\u3044\u5909\u6570\u5ba3\u8a00\u306e\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u30b7\u30f3\u30dc\u30eb\u306e\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token symbol\">:time_zone<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u5e38\u3001Ruby\u3067\u306f\u91cd\u8981\u306a\u3082\u306e\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306b\u30b7\u30f3\u30dc\u30eb\u3092\u4f7f\u7528\u3057\u3001\u4f5c\u696d\u3084\u64cd\u4f5c\u3092\u884c\u3046\u305f\u3081\u306b\u306f\u6587\u5b57\u5217\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002Ruby\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u306e\u5404\u6587\u5b57\u5217\u306f\u72ec\u81ea\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308a\u3001\u540c\u4e00\u3067\u3082\u30e1\u30e2\u30ea\u5185\u306e\u7570\u306a\u308b\u5834\u6240\u306b\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u540c\u3058\u30b7\u30f3\u30dc\u30eb\u3092\u8907\u6570\u56de\u53c2\u7167\u3059\u308b\u5834\u5408\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5168\u4f53\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53c2\u7167\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u3001\u540c\u3058\u30e1\u30e2\u30ea\u4f4d\u7f6e\u3092\u53c2\u7167\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u79c1\u305f\u3061\u306f\u3001\u30ad\u30fc\u3068\u5024\u3092\u95a2\u9023\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30cf\u30c3\u30b7\u30e5\u3092\u898b\u306a\u304c\u3089\u3001\u3053\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u304c\u5b9f\u969b\u306b\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30cf\u30c3\u30b7\u30e5<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u3068\u306f\u3001\u30ad\u30fc\u3068\u5024\u304b\u3089\u306a\u308b\u8f9e\u66f8\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u306e\u96c6\u307e\u308a\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u306f\u3001\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3057\u305f\u308a\u30a2\u30af\u30bb\u30b9\u3057\u305f\u308a\u3059\u308b\u305f\u3081\u306e\u4fbf\u5229\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306e\u60c5\u5831\u306a\u3069\u95a2\u9023\u3059\u308b\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3059\u308b\u305f\u3081\u306b\u3001\u30cf\u30c3\u30b7\u30e5\u306f\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u30cf\u30c3\u30b7\u30e5\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">{<\/span><span class=\"token string-literal\"><span class=\"token string\">\"first_name\"<\/span><\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Sammy\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"last_name\"<\/span><\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Shark\"<\/span><\/span><span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4ed6\u306e\u30c7\u30fc\u30bf\u578b\u3068\u540c\u69d8\u306b\u3001\u30cf\u30c3\u30b7\u30e5\u3092\u5909\u6570\u306b\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>user <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string-literal\"><span class=\"token string\">\"first_name\"<\/span><\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Sammy\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"last_name\"<\/span><\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Shark\"<\/span><\/span><span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u30e6\u30fc\u30b6\u30fc\u30cf\u30c3\u30b7\u30e5\u304b\u3089\u5024\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u3001\u5024\u306e\u305f\u3081\u306e\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print user<span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"first_name\"<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token comment\"># \"Sammy\"<\/span>\r\nprint user<span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"last_name\"<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token comment\"># \"Shark\"<\/span>\r\n<\/code><\/pre>\n<p>\u6587\u5b57\u5217\u306e\u4ee3\u308f\u308a\u306b\u30b7\u30f3\u30dc\u30eb\u3092\u4f7f\u3063\u3066\u3001\u30cf\u30c3\u30b7\u30e5\u306e\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 (Mojiiretsu no kawari ni shimb\u014dru o tsukatte, hasshu no k\u012b toshite shiy\u014d suru koto ga dekimasu.)<\/p>\n<pre class=\"post-pre\"><code>user <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token symbol\">:first_name<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Sammy\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token symbol\">:last_name<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Shark\"<\/span><\/span><span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u53ef\u80fd\u306a\u9650\u308a\u3001\u30cf\u30c3\u30b7\u30e5\u30ad\u30fc\u3068\u3057\u3066\u30b7\u30f3\u30dc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30b7\u30f3\u30dc\u30eb\u306e\u5404\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u3057\u3001\u4e00\u65b9\u3067\u6587\u5b57\u5217\u306e\u5404\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u4e00\u610f\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53c2\u7167\u3057\u307e\u3059\u3002\u30b7\u30f3\u30dc\u30eb\u3092\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u3068\u3001\u308f\u305a\u304b\u306b\u6027\u80fd\u304c\u5411\u4e0a\u3057\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3082\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u30b7\u30f3\u30dc\u30eb\u3092\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u969b\u306b\u306f\u3001\u305d\u306e\u30b7\u30f3\u30dc\u30eb\u3092\u4f7f\u3063\u3066\u5024\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print user<span class=\"token punctuation\">[<\/span><span class=\"token symbol\">:first_name<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token comment\"># \"Sammy\"<\/span>\r\nprint user<span class=\"token punctuation\">[<\/span><span class=\"token symbol\">:last_name<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token comment\"># \"Shark\"<\/span>\r\n<\/code><\/pre>\n<p>\u30cf\u30c3\u30b7\u30e5\u3092\u5b9a\u7fa9\u3059\u308b\u969b\u306b\u306f\u3001\u308f\u305a\u304b\u306b\u7570\u306a\u308b\u69cb\u6587\u3082\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>user <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token symbol\">first_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Sammy\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token symbol\">last_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Shark\"<\/span><\/span><span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u69cb\u6587\u306f\u3001JavaScript\u3084\u4ed6\u306e\u8a00\u8a9e\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u69cb\u6587\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u69cb\u6587\u3067\u306f\u3001\u30ad\u30fc\u3092\u30b7\u30f3\u30dc\u30eb\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u3001&#8221;first_name&#8221;\u3084&#8221;last_name&#8221;\u306e\u3088\u3046\u306a\u6587\u5b57\u5217\u3067\u306f\u306a\u304f\u3001:first_name\u3084:last_name\u3092\u4f7f\u3063\u3066\u30a8\u30f3\u30c8\u30ea\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002<\/p>\n<p>\u3044\u304f\u3064\u304b\u306e\u30c7\u30fc\u30bf\u578b\u3092\u898b\u3066\u304d\u307e\u3057\u305f\u306e\u3067\u3001\u305d\u308c\u3089\u306e\u578b\u3068\u306e\u7d50\u3073\u3064\u304d\u65b9\u3092Ruby\u3067\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u52d5\u7684\u578b\u4ed8\u3051<\/h2>\n<p>Ruby\u3067\u306f\u3001\u5024\u3092\u4ee3\u5165\u3059\u308b\u524d\u306b\u30c7\u30fc\u30bf\u578b\u3092\u660e\u793a\u7684\u306b\u5ba3\u8a00\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5024\u306e\u4ee3\u5165\u306b\u3088\u3063\u3066\u30c7\u30fc\u30bf\u578b\u304c\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u3002Ruby\u306f\u52d5\u7684\u578b\u4ed8\u3051\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u9759\u7684\u578b\u4ed8\u3051\u3092\u4f7f\u7528\u3059\u308b\u8a00\u8a9e\u3068\u306f\u7570\u306a\u308a\u3001\u5b9f\u884c\u6642\u306b\u578b\u30c1\u30a7\u30c3\u30af\u304c\u884c\u308f\u308c\u307e\u3059\u3002Ruby\u306f\u5909\u6570\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u304b\u3089\u30c7\u30fc\u30bf\u578b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u306fPython\u3084JavaScript\u306e\u30c7\u30fc\u30bf\u578b\u3068\u985e\u4f3c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u4f8b\u3067\u306f\u3001\u5909\u6570t\u306f\u5229\u7528\u53ef\u80fd\u306a\u4efb\u610f\u306e\u30c7\u30fc\u30bf\u578b\u306b\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>t <span class=\"token operator\">=<\/span> <span class=\"token number\">42<\/span> <span class=\"token comment\"># t is an Integer<\/span>\r\nt <span class=\"token operator\">=<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Sammy\"<\/span><\/span> <span class=\"token comment\"># t is a String<\/span>\r\nt <span class=\"token operator\">=<\/span> <span class=\"token symbol\">:sammy<\/span> <span class=\"token comment\"># t is a Symbol<\/span>\r\nt <span class=\"token operator\">=<\/span> <span class=\"token boolean\">true<\/span> <span class=\"token comment\"># t is a boolean (true)<\/span>\r\nt <span class=\"token comment\"># t is nil<\/span>\r\n<\/code><\/pre>\n<p>\u52d5\u7684\u578b\u4ed8\u3051\u8a00\u8a9e\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u65e2\u5b58\u306e\u5909\u6570\u3092\u7570\u306a\u308b\u30c7\u30fc\u30bf\u578b\u3092\u4fdd\u6301\u3059\u308b\u305f\u3081\u306b\u518d\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u3092\u5225\u306e\u5f62\u5f0f\u306b\u5909\u63db\u3059\u308b\u969b\u306b\u306f\u3001\u3053\u308c\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u6570\u5024\u306e\u5165\u529b\u3092\u6c42\u3081\u308b\u305f\u3081\u306e\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<pre class=\"post-pre\"><code>print <span class=\"token string-literal\"><span class=\"token string\">\"Please enter the length of the room: \"<\/span><\/span>\r\nlength <span class=\"token operator\">=<\/span> gets<span class=\"token punctuation\">.<\/span>chop\r\n<\/code><\/pre>\n<p>\u30ad\u30fc\u30dc\u30fc\u30c9\u304b\u3089\u53d6\u5f97\u3059\u308b\u30c7\u30fc\u30bf\u306f\u5e38\u306b\u6587\u5b57\u5217\u3067\u3059\u306e\u3067\u3001\u6570\u5b66\u7684\u306a\u64cd\u4f5c\u3092\u884c\u3046\u305f\u3081\u306b\u306f\u9577\u3055\u306e\u5909\u6570\u306e\u30c7\u30fc\u30bf\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u9759\u7684\u306b\u578b\u4ed8\u3051\u3055\u308c\u305f\u8a00\u8a9e\u3067\u306f\u3001\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u524d\u306b\u5909\u6570\u306e\u30c7\u30fc\u30bf\u578b\u3092\u5ba3\u8a00\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u5909\u63db\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3059\u308b\u305f\u3081\u306b\u65b0\u3057\u3044\u5909\u6570\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001Ruby\u3067\u306f\u52d5\u7684\u306b\u578b\u4ed8\u3051\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u5fc5\u8981\u3067\u3042\u308c\u3070\u9577\u3055\u306e\u5909\u6570\u3092\u518d\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\"># Convert the amount to a Float.<\/span>\r\nlength <span class=\"token operator\">=<\/span> length<span class=\"token punctuation\">.<\/span>to_f\r\n<\/code><\/pre>\n<p>to_f\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6587\u5b57\u5217\u3092\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u306b\u5909\u63db\u3057\u307e\u3059\u3002Ruby\u306b\u306f\u307e\u305f\u3001\u6587\u5b57\u5217\u3092\u6574\u6570\u306b\u5909\u63db\u3059\u308b\u305f\u3081\u306eto_i\u30e1\u30bd\u30c3\u30c9\u3082\u3042\u308a\u3001\u307b\u3068\u3093\u3069\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306fto_s\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token number\">42.<\/span>to_s <span class=\"token comment\"># \"42\"<\/span>\r\n<span class=\"token punctuation\">(<\/span><span class=\"token number\">42.5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>to_s <span class=\"token comment\"># \"42.5\"<\/span>\r\n<span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Sammy\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Shark\"<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>to_s <span class=\"token comment\"># \"[\\\"Sammy\\\", \\\"Shark\\\"]\"<\/span>\r\n<\/code><\/pre>\n<p>Ruby\u306f\u52d5\u7684\u306b\u578b\u4ed8\u3051\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u7570\u306a\u308b\u30bf\u30a4\u30d7\u306e\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u306f\u3067\u304d\u305a\u3001\u540c\u3058\u30bf\u30a4\u30d7\u306b\u5909\u63db\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u4f8b\u3048\u3070\u3001\u3053\u306e\u30b3\u30fc\u30c9\u306f\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>print <span class=\"token number\">5<\/span> <span class=\"token operator\">+<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"5\"<\/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>TypeError: String can&#8217;t be coerced into Integer<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u3067\u306f\uff1a<\/p>\n<pre class=\"post-pre\"><code>print <span class=\"token string-literal\"><span class=\"token string\">\"5\"<\/span><\/span> <span class=\"token operator\">+<\/span> <span class=\"token number\">5<\/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>TypeError: no implicit conversion of Integer into String<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3082\u305710\u3092\u5f97\u308b\u305f\u3081\u306b\u6570\u5b57\u3092\u8db3\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u6587\u5b57\u5217\u3092\u6574\u6570\u306b\u5909\u63db\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3082\u3057&#8221;55&#8243;\u3092\u5f97\u308b\u305f\u3081\u306b\u305d\u308c\u3089\u3092\u7d50\u5408\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u6574\u6570\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u52d5\u7684\u578b\u4ed8\u3051\u306f\u67d4\u8edf\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u305d\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u306e\u3072\u3068\u3064\u306f\u3001\u5909\u6570\u306b\u306f\u5229\u7528\u53ef\u80fd\u306a\u4efb\u610f\u306e\u578b\u304c\u542b\u307e\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u5e38\u306b\u3069\u306e\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3063\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3067\u304d\u306a\u3044\u3053\u3068\u3067\u3059\u3002Ruby\u306b\u306f\u30c7\u30fc\u30bf\u306e\u578b\u3092\u7279\u5b9a\u3059\u308b\u65b9\u6cd5\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30c7\u30fc\u30bf\u578b\u306e\u8b58\u5225<\/h2>\n<p>Ruby\u3067\u306f\u307b\u307c\u3059\u3079\u3066\u306e\u3082\u306e\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002\u6574\u6570\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3001\u914d\u5217\u3001\u30b7\u30f3\u30dc\u30eb\u3001\u30cf\u30c3\u30b7\u30e5\u306f\u3059\u3079\u3066Ruby\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308a\u3001\u305d\u308c\u305e\u308c\u304c\u30af\u30e9\u30b9\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u81ea\u8eab\u306e\u30bf\u30a4\u30d7\u3092\u6559\u3048\u3066\u304f\u308c\u307e\u3059\u3002\u771f\u507d\u5024\u306etrue\u3068false\u3001\u304a\u3088\u3073\u5024nil\u3082\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002\u81ea\u5206\u3067\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token number\">42.<\/span><span class=\"token keyword\">class<\/span> <span class=\"token comment\"># Integer<\/span>\r\n<span class=\"token punctuation\">(<\/span><span class=\"token number\">42.2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span> <span class=\"token comment\"># Float<\/span>\r\n<span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">\"Sammy\"<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">\"Shark\"<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span> <span class=\"token comment\"># Array<\/span>\r\n<span class=\"token boolean\">true<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span> <span class=\"token comment\"># TrueClass<\/span>\r\n<span class=\"token keyword\">nil<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span> <span class=\"token comment\"># NilClass<\/span>\r\n<\/code><\/pre>\n<p>\u3055\u3089\u306b\u3001kind_of? \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u578b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token number\">42.<\/span>kind_of<span class=\"token operator\">?<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">Integer<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># true<\/span>\r\n<\/code><\/pre>\n<p>\u5909\u6570\u304c\u3042\u308a\u3001\u305d\u306e\u578b\u3092\u7279\u5b9a\u3057\u305f\u3044\u5834\u5408\u3001\u3053\u308c\u306f\u7279\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\"># somewhere in the code...<\/span>\r\nsharks <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\">\"Tiger\"<\/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>\r\n<span class=\"token operator\">...<\/span>\r\n<span class=\"token comment\"># somewhere else...<\/span>\r\n\r\nsharks<span class=\"token punctuation\">.<\/span>kind_of<span class=\"token operator\">?<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">Hash<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># false<\/span>\r\nsharks<span class=\"token punctuation\">.<\/span>kind_of<span class=\"token operator\">?<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">Array<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># true<\/span>\r\n<\/code><\/pre>\n<p>\u3042\u306a\u305f\u306f\u5916\u90e8\u306e\u30bd\u30fc\u30b9\u304b\u3089\u6765\u305f\u30c7\u30fc\u30bf\u304c\u6b63\u3057\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001\u3053\u308c\u3092\u4f7f\u3046\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">if<\/span> data<span class=\"token punctuation\">.<\/span>kind_of<span class=\"token operator\">?<\/span> <span class=\"token builtin\">String<\/span>\r\ndata <span class=\"token operator\">=<\/span> data<span class=\"token punctuation\">.<\/span>to_f\r\n<span class=\"token keyword\">end<\/span>\r\n<\/code><\/pre>\n<p>Ruby\u306fis_a?\u30e1\u30bd\u30c3\u30c9\u3082\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001kind_of?\u3068\u540c\u3058\u3053\u3068\u3092\u3057\u307e\u3059\u304c\u3001\u4e00\u90e8\u306e\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u306f\u5c11\u3057\u8aad\u307f\u3084\u3059\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">if<\/span> data<span class=\"token punctuation\">.<\/span>is_a<span class=\"token operator\">?<\/span> <span class=\"token builtin\">String<\/span>\r\ndata <span class=\"token operator\">=<\/span> data<span class=\"token punctuation\">.<\/span>to_f\r\n<span class=\"token keyword\">end<\/span>\r\n<\/code><\/pre>\n<p>\u30af\u30e9\u30b9\u3001kind_of\uff1f\u3001is_a\uff1f\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u9069\u5207\u306a\u30c7\u30fc\u30bf\u578b\u3092\u6271\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Ruby\u3092\u5b66\u3076\u306b\u3064\u308c\u3066\u3001\u30c7\u30fc\u30bf\u306e\u578b\u3092\u660e\u793a\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u5fc5\u8981\u306e\u306a\u3044\u4ed6\u306e\u30c7\u30fc\u30bf\u51e6\u7406\u65b9\u6cd5\u3082\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u3042\u306a\u305f\u306eRuby\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u30c7\u30fc\u30bf\u578b\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002Ruby\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u5229\u7528\u53ef\u80fd\u306a\u4e3b\u8981\u306a\u30c7\u30fc\u30bf\u578b\u306b\u3064\u3044\u3066\u3001\u4eca\u306f\u3088\u308a\u826f\u3044\u7406\u89e3\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Ruby\u306e\u30c7\u30fc\u30bf\u578b\u3092\u63a2\u6c42\u3059\u308b\u305f\u3081\u306b\u3001\u3053\u308c\u3089\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul class=\"post-ul\">\n<li>How to Work with Strings in Ruby<\/li>\n<li>How to Work with Arrays in Ruby<\/li>\n<li>How to Convert Data Types in Ruby<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u4ee5\u4e0b\u306e\u6587\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\u306f\u4e00\u3064\u3060\u3051\uff09\uff1a \u300cIntroduction\u300d \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f\u969b\u306b\u306f\u3001\u30c7\u30fc\u30bf\u578b\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u3092\u5206\u985e\u3057\u307e\u3059\u3002\u30c7\u30fc\u30bf\u578b\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u3092\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\u3059 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-28","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ruby\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u578b\u306e\u7406\u89e3 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Ruby\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u578b\u306e\u7406\u89e3\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" 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