{"id":1501,"date":"2025-03-24T08:50:34","date_gmt":"2025-03-23T23:50:34","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1501"},"modified":"2025-03-24T08:50:34","modified_gmt":"2025-03-23T23:50:34","slug":"%e3%80%90%e4%bf%9d%e5%ad%98%e7%89%88%e3%80%91ruby-range%e3%81%ae%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e5%ae%9f%e8%b7%b5%e7%9a%84%e3%81%aa%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%a89%e3%81%a4","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1501","title":{"rendered":"\u3010\u4fdd\u5b58\u7248\u3011Ruby Range\u306e\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a\u5b9f\u8df5\u7684\u306a\u4f7f\u3044\u65b9\u30689\u3064\u306e\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">Ruby\u306eRange\uff08\u7bc4\u56f2\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3068\u306f<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">Range\u30af\u30e9\u30b9\u306e\u57fa\u672c\u6982\u5ff5\u3068\u7279\u5fb4<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">\u4ed6\u8a00\u8a9e\u306e\u7bc4\u56f2\u8868\u73fe\u3068\u306e\u6bd4\u8f03<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">Range\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u6570\u5024\u7bc4\u56f2\u306e\u4f5c\u6210\u65b9\u6cd5\u3068\u64cd\u4f5c<\/a>      <\/li>      <li>        <a href=\"#i-5\">\u6587\u5b57\u5217\u7bc4\u56f2\u306e\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-6\">\u7bc4\u56f2\u306e\u5883\u754c\u5024\u3092\u5236\u5fa1\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-7\">\u5b9f\u8df5\u7684\u306aRange\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-8\">\u914d\u5217\u64cd\u4f5c\u3067\u306e\u52b9\u7387\u7684\u306a\u4f7f\u3044\u65b9<\/a>      <\/li>      <li>        <a href=\"#i-9\">\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-10\">\u6761\u4ef6\u5206\u5c90\u3067\u306e\u7bc4\u56f2\u6f14\u7b97\u5b50\u306e\u4f7f\u7528<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-11\">Range\u3092\u4f7f\u3063\u305f\u30b3\u30fc\u30c9\u6700\u9069\u5316<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-12\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305fRange\u6d3b\u7528\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-13\">\u30e1\u30e2\u30ea\u52b9\u7387\u3092\u6539\u5584\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">\u53ef\u8aad\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-15\">\u3088\u304f\u3042\u308b\u30d0\u30b0\u3068\u5bfe\u51e6\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-16\">\u7bc4\u56f2\u306e\u5883\u754c\u5024\u306b\u95a2\u3059\u308b\u6ce8\u610f\u70b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-17\">\u7121\u9650\u30eb\u30fc\u30d7\u3092\u9632\u3050\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-18\">\u5b9f\u52d9\u3067\u306e\u6d3b\u7528\u4e8b\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-19\">\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u3067\u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-20\">\u65e5\u4ed8\u7bc4\u56f2\u51e6\u7406\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-21\">\u30c7\u30fc\u30bf\u691c\u8a3c\u3067\u306e\u4f7f\u7528\u4f8b<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">Ruby\u306eRange\uff08\u7bc4\u56f2\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3068\u306f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">Range\u30af\u30e9\u30b9\u306e\u57fa\u672c\u6982\u5ff5\u3068\u7279\u5fb4<\/h3>\n\n\n\n<p>Ruby\u306e<code>Range<\/code>\u30af\u30e9\u30b9\u306f\u3001\u5024\u306e\u7bc4\u56f2\u3092\u8868\u73fe\u3059\u308b\u305f\u3081\u306e\u7d44\u307f\u8fbc\u307f\u30af\u30e9\u30b9\u3067\u3059\u3002\u6570\u5024\u3084\u6587\u5b57\u5217\u306a\u3069\u306e\u5024\u306e\u96c6\u5408\u3092\u3001\u958b\u59cb\u5024\u3068\u7d42\u4e86\u5024\u3092\u6307\u5b9a\u3057\u3066\u7c21\u6f54\u306b\u8868\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e3b\u306a\u7279\u5fb4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b7\u30f3\u30d7\u30eb\u306a\u7bc4\u56f2\u8868\u73fe<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>..<\/code>\uff08\u5305\u542b\u7bc4\u56f2\uff09\u3068<code>...<\/code>\uff08\u9664\u5916\u7bc4\u56f2\uff09\u306e2\u7a2e\u985e\u306e\u6f14\u7b97\u5b50\u3092\u30b5\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li><code>(1..5)<\/code>\u306f1\u304b\u30895\u307e\u3067\uff085\u3092\u542b\u3080\uff09<\/li>\n\n\n\n<li><code>(1...5)<\/code>\u306f1\u304b\u30894\u307e\u3067\uff085\u3092\u542b\u307e\u306a\u3044\uff09<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u591a\u69d8\u306a\u5024\u578b\u306e\u30b5\u30dd\u30fc\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u5024\u7bc4\u56f2\uff1a<code>(1..10)<\/code><\/li>\n\n\n\n<li>\u6587\u5b57\u5217\u7bc4\u56f2\uff1a<code>('a'..'z')<\/code><\/li>\n\n\n\n<li>\u65e5\u4ed8\u7bc4\u56f2\uff1a<code>(Date.today..Date.today + 30)<\/code><\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4fbf\u5229\u306a\u30e1\u30bd\u30c3\u30c9\u7fa4<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   range = (1..5)\n   range.begin  # =&gt; 1    # \u958b\u59cb\u5024\u306e\u53d6\u5f97\n   range.end    # =&gt; 5    # \u7d42\u4e86\u5024\u306e\u53d6\u5f97\n   range.exclude_end?  # =&gt; false  # \u7d42\u7aef\u5024\u3092\u542b\u3080\u304b\u3069\u3046\u304b<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>Enumerable\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u5305\u542b<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>each<\/code>\u3001<code>map<\/code>\u3001<code>select<\/code>\u306a\u3069\u306e\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u53ef\u80fd<\/li>\n\n\n\n<li>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3068\u3057\u3066\u306e\u8c4a\u5bcc\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u4ed6\u8a00\u8a9e\u306e\u7bc4\u56f2\u8868\u73fe\u3068\u306e\u6bd4\u8f03<\/h3>\n\n\n<div id=\"id-2d3ebb56-6677-48a4-8d3e-d16ec41e7b41\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u8a00\u8a9e<\/th><th>\u7bc4\u56f2\u8868\u73fe<\/th><th>\u7279\u5fb4<\/th><\/tr><\/thead><tbody><tr><td>Ruby<\/td><td><code>(1..5)<\/code> or <code>(1...5)<\/code><\/td><td>\u2013 \u6700\u3082\u76f4\u611f\u7684\u306a\u8868\u73fe<br>\u2013 \u591a\u69d8\u306a\u5024\u578b\u3092\u30b5\u30dd\u30fc\u30c8<br>\u2013 \u8c4a\u5bcc\u306a\u30e1\u30bd\u30c3\u30c9\u7fa4<\/td><\/tr><tr><td>Python<\/td><td><code>range(1, 6)<\/code><\/td><td>\u2013 \u7d42\u4e86\u5024\u306f\u5e38\u306b\u9664\u5916<br>\u2013 \u6570\u5024\u306e\u307f\u30b5\u30dd\u30fc\u30c8<\/td><\/tr><tr><td>JavaScript<\/td><td>\u306a\u3057\uff08ES6\u4ee5\u964d\u306e<code>for...of<\/code>\u3067\u90e8\u5206\u7684\u30b5\u30dd\u30fc\u30c8\uff09<\/td><td>\u2013 \u7d44\u307f\u8fbc\u307f\u306e\u7bc4\u56f2\u578b\u306a\u3057<br>\u2013 \u30a4\u30c6\u30ec\u30fc\u30bf\u3067\u4ee3\u7528<\/td><\/tr><tr><td>PHP<\/td><td><code>range(1, 5)<\/code><\/td><td>\u2013 \u95a2\u6570\u3068\u3057\u3066\u5b9f\u88c5<br>\u2013 \u914d\u5217\u3092\u751f\u6210<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>Ruby\u306e<code>Range<\/code>\u306e\u512a\u4f4d\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8868\u73fe\u529b\u306e\u9ad8\u3055<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u6570\u5024\u7bc4\u56f2\n   (1..5).each { |n| puts n }\n\n   # \u6587\u5b57\u5217\u7bc4\u56f2\n   ('A'..'Z').to_a  # =&gt; [\"A\", \"B\", \"C\", ..., \"Z\"]\n\n   # \u65e5\u4ed8\u7bc4\u56f2\n   (Date.today..Date.today + 7).each { |date| puts date }<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u67d4\u8edf\u306a\u5883\u754c\u5236\u5fa1<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u5305\u542b\u7bc4\u56f2\uff08\u7d42\u7aef\u3092\u542b\u3080\uff09\n   (1..5).to_a  # =&gt; [1, 2, 3, 4, 5]\n\n   # \u9664\u5916\u7bc4\u56f2\uff08\u7d42\u7aef\u3092\u542b\u307e\u306a\u3044\uff09\n   (1...5).to_a  # =&gt; [1, 2, 3, 4]<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u7bc4\u56f2\u5185\u306e\u5076\u6570\u3092\u62bd\u51fa\u3057\u30662\u500d\n   (1..10).select(&amp;:even?).map { |n| n * 2 }\n   # =&gt; [4, 8, 12, 16, 20]<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001Ruby\u306eRange\u306f\u4ed6\u8a00\u8a9e\u3068\u6bd4\u8f03\u3057\u3066\u3001\u3088\u308a\u76f4\u611f\u7684\u3067\u67d4\u8edf\u306a\u7bc4\u56f2\u8868\u73fe\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u307e\u305f\u3001Enumerable\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u306e\u7d71\u5408\u306b\u3088\u308a\u3001\u914d\u5217\u306e\u3088\u3046\u306a\u64cd\u4f5c\u6027\u3082\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u7279\u5fb4\u306b\u3088\u308a\u3001\u69d8\u3005\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b7\u30fc\u30f3\u3067\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">Range\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u6570\u5024\u7bc4\u56f2\u306e\u4f5c\u6210\u65b9\u6cd5\u3068\u64cd\u4f5c<\/h3>\n\n\n\n<p>\u6570\u5024\u7bc4\u56f2\u306f\u6700\u3082\u4e00\u822c\u7684\u306aRange\u4f7f\u7528\u4f8b\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u4e3b\u8981\u306a\u64cd\u4f5c\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u7bc4\u56f2\u306e\u4f5c\u6210<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # 1\u304b\u30895\u307e\u3067\u306e\u7bc4\u56f2\uff085\u3092\u542b\u3080\uff09\n   range1 = (1..5)\n\n   # 1\u304b\u30895\u307e\u3067\u306e\u7bc4\u56f2\uff085\u3092\u542b\u307e\u306a\u3044\uff09\n   range2 = (1...5)\n\n   # \u8ca0\u306e\u6570\u3092\u542b\u3080\u7bc4\u56f2\n   range3 = (-5..5)\n\n   # \u5c0f\u6570\u3092\u542b\u3080\u7bc4\u56f2\n   range4 = (0.5..2.5)<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u7bc4\u56f2\u306e\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   range = (1..5)\n\n   # \u6700\u521d\u3068\u6700\u5f8c\u306e\u8981\u7d20\u3092\u53d6\u5f97\n   range.begin  # =&gt; 1\n   range.end    # =&gt; 5\n   range.first  # =&gt; 1\n   range.last   # =&gt; 5\n\n   # \u914d\u5217\u3078\u306e\u5909\u63db\n   range.to_a   # =&gt; [1, 2, 3, 4, 5]<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u7bc4\u56f2\u306b\u5bfe\u3059\u308b\u64cd\u4f5c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   range = (1..10)\n\n   # \u8981\u7d20\u306e\u5b58\u5728\u78ba\u8a8d\n   range.include?(5)  # =&gt; true\n   range.include?(11) # =&gt; false\n\n   # \u7bc4\u56f2\u5185\u306e\u8981\u7d20\u6570\n   range.size         # =&gt; 10\n\n   # \u7bc4\u56f2\u306e\u30b9\u30c6\u30c3\u30d7\u5b9f\u884c\n   range.step(2) { |n| puts n }  # 1, 3, 5, 7, 9\u3092\u51fa\u529b<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u6587\u5b57\u5217\u7bc4\u56f2\u306e\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u6587\u5b57\u5217\u7bc4\u56f2\u306f\u3001\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u3084\u6587\u5b57\u5217\u306e\u9023\u7d9a\u3057\u305f\u7bc4\u56f2\u3092\u6271\u3046\u969b\u306b\u4fbf\u5229\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u7bc4\u56f2\u306e\u4f5c\u6210<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u5c0f\u6587\u5b57\u306e\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u7bc4\u56f2\n   alpha_lower = ('a'..'z')\n\n   # \u5927\u6587\u5b57\u306e\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u7bc4\u56f2\n   alpha_upper = ('A'..'Z')\n\n   # \u7279\u5b9a\u306e\u6587\u5b57\u9593\u306e\u7bc4\u56f2\n   custom_range = ('d'..'m')<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u5217\u7bc4\u56f2\u306e\u64cd\u4f5c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   alpha = ('a'..'z')\n\n   # \u914d\u5217\u3078\u306e\u5909\u63db\n   alpha.to_a  # =&gt; [\"a\", \"b\", \"c\", ..., \"z\"]\n\n   # \u8981\u7d20\u306e\u5b58\u5728\u78ba\u8a8d\n   alpha.include?('m')  # =&gt; true\n\n   # \u7bc4\u56f2\u5185\u306e\u7279\u5b9a\u306e\u6587\u5b57\u3092\u53d6\u5f97\n   alpha.entries[5]     # =&gt; \"f\"<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u30d1\u30b9\u30ef\u30fc\u30c9\u751f\u6210\u3067\u306e\u6d3b\u7528\n   chars = [*('a'..'z'), *('A'..'Z'), *(0..9)].join\n   password = (0...8).map { chars[rand(chars.length)] }.join\n\n   # \u6587\u5b57\u5217\u306e\u691c\u8a3c\n   def valid_username?(name)\n     ('a'..'z').include?(name[0].downcase)\n   end<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u7bc4\u56f2\u306e\u5883\u754c\u5024\u3092\u5236\u5fa1\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u7bc4\u56f2\u306e\u5883\u754c\u5024\u306e\u5236\u5fa1\u306f\u3001\u6b63\u78ba\u306a\u7bc4\u56f2\u64cd\u4f5c\u306b\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5883\u754c\u5024\u306e\u5305\u542b\/\u9664\u5916<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u7d42\u7aef\u3092\u542b\u3080\u7bc4\u56f2\n   inclusive = (1..5)\n   inclusive.include?(5)  # =&gt; true\n\n   # \u7d42\u7aef\u3092\u542b\u307e\u306a\u3044\u7bc4\u56f2\n   exclusive = (1...5)\n   exclusive.include?(5)  # =&gt; false<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u5883\u754c\u5024\u306e\u5224\u5b9a\u30e1\u30bd\u30c3\u30c9<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   range = (1..5)\n\n   # \u7d42\u7aef\u3092\u542b\u3080\u304b\u3069\u3046\u304b\u306e\u78ba\u8a8d\n   range.exclude_end?  # =&gt; false\n\n   # \u5024\u304c\u7bc4\u56f2\u5185\u304b\u306e\u78ba\u8a8d\n   range.cover?(3)     # =&gt; true\n   range.cover?(6)     # =&gt; false<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u7bc4\u56f2\u306e\u6bd4\u8f03\u3068\u7d50\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   range1 = (1..5)\n   range2 = (3..8)\n\n   # \u7bc4\u56f2\u306e\u91cd\u306a\u308a\u3092\u78ba\u8a8d\n   overlap = range1.begin &lt;= range2.end &amp;&amp; range2.begin &lt;= range1.end\n\n   # \u7bc4\u56f2\u306e\u7d50\u5408\n   merged = ([range1.begin, range2.begin].min..[range1.end, range2.end].max)<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u8907\u96d1\u306a\u64cd\u4f5c\u3084\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u308c\u3089\u306e\u64cd\u4f5c\u306f\u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3067\u5b9f\u884c\u3055\u308c\u3001\u30e1\u30e2\u30ea\u52b9\u7387\u3082\u8003\u616e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">\u5b9f\u8df5\u7684\u306aRange\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u914d\u5217\u64cd\u4f5c\u3067\u306e\u52b9\u7387\u7684\u306a\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>Range\u3092\u4f7f\u7528\u3057\u305f\u914d\u5217\u64cd\u4f5c\u306f\u3001\u30b3\u30fc\u30c9\u3092\u7c21\u6f54\u304b\u3064\u52b9\u7387\u7684\u306b\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u914d\u5217\u306e\u30b9\u30e9\u30a4\u30b9\u51e6\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n\n   # \u7279\u5b9a\u7bc4\u56f2\u306e\u8981\u7d20\u3092\u53d6\u5f97\n   array[2..5]    # =&gt; [2, 3, 4, 5]\n\n   # \u672b\u5c3e\u304b\u3089\u306e\u7bc4\u56f2\u6307\u5b9a\n   array[-5..-1]  # =&gt; [5, 6, 7, 8, 9]\n\n   # \u8981\u7d20\u306e\u7f6e\u63db\n   array[2..4] = ['a', 'b', 'c']\n   # array = [0, 1, 'a', 'b', 'c', 5, 6, 7, 8, 9]<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u914d\u5217\u306e\u751f\u6210\u3068\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u9023\u7d9a\u3057\u305f\u6570\u5024\u306e\u914d\u5217\u751f\u6210\n   numbers = Array(1..100)\n\n   # \u7bc4\u56f2\u3092\u4f7f\u7528\u3057\u305f\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\n   even_numbers = numbers.select { |n| (2..50).include?(n) &amp;&amp; n.even? }\n\n   # \u7bc4\u56f2\u30b9\u30c6\u30c3\u30d7\u306b\u3088\u308b\u62bd\u51fa\n   step_array = (0..20).step(4).to_a  # =&gt; [0, 4, 8, 12, 16, 20]<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>Range\u3092\u4f7f\u7528\u3057\u305f\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u306f\u3001\u76f4\u611f\u7684\u3067\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u7bc4\u56f2\u3092\u4f7f\u7528\u3057\u305feach\u51e6\u7406\n   (1..5).each do |i|\n     puts \"Processing item #{i}\"\n   end\n\n   # \u30b9\u30c6\u30c3\u30d7\u4ed8\u304d\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\n   (0..10).step(2) do |i|\n     puts \"Even number: #{i}\"\n   end<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u9ad8\u5ea6\u306a\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u51e6\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u7bc4\u56f2\u3092\u4f7f\u7528\u3057\u305f\u7573\u307f\u8fbc\u307f\u51e6\u7406\n   sum = (1..100).reduce(0) { |acc, n| acc + n }\n\n   # \u6761\u4ef6\u4ed8\u304d\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\n   (1..10).each_with_object([]) do |n, array|\n     array &lt;&lt; n if n.even?\n   end<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u7121\u9650\u7bc4\u56f2\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u7279\u5b9a\u6761\u4ef6\u307e\u3067\u51e6\u7406\u3092\u7d9a\u3051\u308b\n   (1..).each do |n|\n     result = complex_calculation(n)\n     break if result &gt; 1000\n   end\n\n   # \u6700\u521d\u306en\u500b\u306e\u8981\u7d20\u3092\u53d6\u5f97\n   first_five = (1..).take(5)  # =&gt; [1, 2, 3, 4, 5]<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u6761\u4ef6\u5206\u5c90\u3067\u306e\u7bc4\u56f2\u6f14\u7b97\u5b50\u306e\u4f7f\u7528<\/h3>\n\n\n\n<p>Range\u306f\u6761\u4ef6\u5206\u5c90\u3067\u975e\u5e38\u306b\u52b9\u679c\u7684\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6570\u5024\u306e\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   def grade_result(score)\n     case score\n     when 90..100 then \"A\"\n     when 80...90 then \"B\"\n     when 70...80 then \"C\"\n     when 60...70 then \"D\"\n     else \"F\"\n     end\n   end\n\n   puts grade_result(85)  # =&gt; \"B\"<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u5217\u306e\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   def categorize_word(word)\n     first_letter = word[0].downcase\n     case first_letter\n     when 'a'..'h' then \"Group 1\"\n     when 'i'..'p' then \"Group 2\"\n     when 'q'..'z' then \"Group 3\"\n     else \"Invalid\"\n     end\n   end<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u8907\u6570\u306e\u6761\u4ef6\u3092\u307e\u3068\u3081\u308b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   def check_working_hours(hour)\n     case hour\n     when 9..12, 13..17\n       \"Working hours\"\n     when 12..13\n       \"Lunch break\"\n     else\n       \"Outside working hours\"\n     end\n   end<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u8868\u73fe\u529b\u8c4a\u304b\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001Range\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u8907\u96d1\u306a\u6761\u4ef6\u5206\u5c90\u3084\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u7c21\u6f54\u306b\u8868\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-11\">Range\u3092\u4f7f\u3063\u305f\u30b3\u30fc\u30c9\u6700\u9069\u5316<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305fRange\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n<p>Range\u3092\u52b9\u7387\u7684\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u7bc4\u56f2\u751f\u6210<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u60aa\u3044\u4f8b\uff1a\u5927\u91cf\u306e\u30e1\u30e2\u30ea\u3092\u6d88\u8cbb\n   numbers = (1..1_000_000).to_a\n\n   # \u826f\u3044\u4f8b\uff1a\u5fc5\u8981\u306a\u6642\u306b\u5024\u3092\u751f\u6210\n   (1..1_000_000).each do |n|\n     process(n)\n   end<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u52b9\u7387\u7684\u306a\u691c\u7d22\u51e6\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u60aa\u3044\u4f8b\uff1a\u914d\u5217\u3092\u4f7f\u7528\u3057\u305f\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\n   def check_age(age)\n     [18, 19, 20, 21, 22, 23, 24, 25].include?(age)\n   end\n\n   # \u826f\u3044\u4f8b\uff1aRange\u3092\u4f7f\u7528\u3057\u305f\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\n   def check_age(age)\n     (18..25).include?(age)\n   end<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u6700\u9069\u5316\u3055\u308c\u305f\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u5927\u304d\u306a\u7bc4\u56f2\u3067\u306e\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u51e6\u7406\n   def process_large_range\n     (1..1_000_000).lazy.select(&amp;:even?).take(10).force\n   end<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30e1\u30e2\u30ea\u52b9\u7387\u3092\u6539\u5584\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u306eRange\u306e\u6d3b\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9045\u5ef6\u8a55\u4fa1\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u60aa\u3044\u4f8b\n   result = (1..1_000_000).select(&amp;:even?).map { |n| n * 2 }\n\n   # \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u4f8b\uff08\u9045\u5ef6\u8a55\u4fa1\uff09\n   result = (1..1_000_000).lazy\n     .select(&amp;:even?)\n     .map { |n| n * 2 }\n     .take(100)\n     .force<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u7bc4\u56f2\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u518d\u5229\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u5b9a\u6570\u3068\u3057\u3066\u7bc4\u56f2\u3092\u5b9a\u7fa9\n   VALID_AGE_RANGE = (18..65).freeze\n\n   def valid_age?(age)\n     VALID_AGE_RANGE.include?(age)\n   end<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u3068\u306e\u7d44\u307f\u5408\u308f\u305b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u306e\u884c\u756a\u53f7\u4ed8\u3051\n   File.open('large_file.txt') do |file|\n     (1..).zip(file).each do |line_num, line|\n       process_line(line_num, line)\n     end\n   end<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u53ef\u8aad\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9<\/h3>\n\n\n\n<p>Range\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u610f\u56f3\u304c\u660e\u78ba\u306a\u7bc4\u56f2\u5b9a\u7fa9<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u60aa\u3044\u4f8b\uff1a\u30de\u30b8\u30c3\u30af\u30ca\u30f3\u30d0\u30fc\u306e\u4f7f\u7528\n   if age &gt;= 18 &amp;&amp; age &lt;= 65\n\n   # \u826f\u3044\u4f8b\uff1a\u610f\u56f3\u304c\u660e\u78ba\u306a\u7bc4\u56f2\u306e\u4f7f\u7528\n   WORKING_AGE = (18..65)\n   if WORKING_AGE.include?(age)<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u7bc4\u56f2\u3092\u4f7f\u3063\u305f\u8aac\u660e\u7684\u306a\u6761\u4ef6\u5206\u5c90<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   def categorize_temperature(temp)\n     case temp\n     when -Float::INFINITY...0\n       \"Freezing\"\n     when 0...15\n       \"Cold\"\n     when 15...25\n       \"Comfortable\"\n     when 25...35\n       \"Warm\"\n     else\n       \"Hot\"\n     end\n   end<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u306e\u9069\u5207\u306a\u6539\u884c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u8aad\u307f\u3084\u3059\u3044\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\n   result = (1..100)\n     .select(&amp;:even?)\n     .map { |n| n * 2 }\n     .reject { |n| n &gt; 100 }\n     .reduce(0, :+)<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3084\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u610f\u8b58\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">\u3088\u304f\u3042\u308b\u30d0\u30b0\u3068\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u7bc4\u56f2\u306e\u5883\u754c\u5024\u306b\u95a2\u3059\u308b\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p>\u7bc4\u56f2\u306e\u5883\u754c\u5024\u306b\u95a2\u9023\u3059\u308b\u4e00\u822c\u7684\u306a\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7d42\u7aef\u5024\u306e\u8aa4\u3063\u305f\u89e3\u91c8<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\n   def get_first_n_numbers(n)\n     (0...n).to_a  # n\u306f\u542b\u307e\u308c\u306a\u3044\n   end\n\n   # \u4fee\u6b63\u3057\u305f\u30b3\u30fc\u30c9\n   def get_first_n_numbers(n)\n     (0..n-1).to_a  # \u307e\u305f\u306f (0...n).to_a \u3092\u4f7f\u7528\n   end<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u7bc4\u56f2\u306e\u65b9\u5411\u6027\u306e\u554f\u984c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\uff1a\u7a7a\u306e\u914d\u5217\u304c\u8fd4\u3055\u308c\u308b\n   (5..1).to_a  # =&gt; []\n\n   # \u4fee\u6b63\u3057\u305f\u30b3\u30fc\u30c9\n   (1..5).to_a  # =&gt; [1, 2, 3, 4, 5]\n   # \u307e\u305f\u306f\u9006\u9806\u304c\u5fc5\u8981\u306a\u5834\u5408\n   (1..5).to_a.reverse  # =&gt; [5, 4, 3, 2, 1]<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u578b\u306e\u4e0d\u4e00\u81f4\u306b\u3088\u308b\u554f\u984c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\n   def check_age(age)\n     ('18'..age.to_s).include?('20')  # \u6587\u5b57\u5217\u6bd4\u8f03\u306b\u306a\u3063\u3066\u3057\u307e\u3046\n   end\n\n   # \u4fee\u6b63\u3057\u305f\u30b3\u30fc\u30c9\n   def check_age(age)\n     (18..age).include?(20)  # \u6570\u5024\u3068\u3057\u3066\u6bd4\u8f03\n   end<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u7121\u9650\u30eb\u30fc\u30d7\u3092\u9632\u3050\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u7121\u9650\u30eb\u30fc\u30d7\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7121\u9650\u7bc4\u56f2\u306e\u9069\u5207\u306a\u7d42\u4e86\u6761\u4ef6<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\uff1a\u7d42\u4e86\u6761\u4ef6\u304c\u306a\u3044\n   (1..).each do |n|\n     process_number(n)\n   end\n\n   # \u4fee\u6b63\u3057\u305f\u30b3\u30fc\u30c9\uff1a\u660e\u78ba\u306a\u7d42\u4e86\u6761\u4ef6\u3092\u8a2d\u5b9a\n   (1..).each do |n|\n     result = process_number(n)\n     break if result || n &gt; 1000  # \u6700\u5927\u8a66\u884c\u56de\u6570\u3092\u8a2d\u5b9a\n   end<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30b9\u30c6\u30c3\u30d7\u5024\u306e\u8aa4\u308a\u9632\u6b62<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\uff1a\u30b9\u30c6\u30c3\u30d7\u5024\u304c0\n   def process_with_step(start, end_val, step)\n     (start..end_val).step(step) do |n|\n       process(n)\n     end\n   end\n\n   # \u4fee\u6b63\u3057\u305f\u30b3\u30fc\u30c9\uff1a\u30b9\u30c6\u30c3\u30d7\u5024\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u8ffd\u52a0\n   def process_with_step(start, end_val, step)\n     raise ArgumentError, \"Step can't be zero\" if step == 0\n     (start..end_val).step(step) do |n|\n       process(n)\n     end\n   end<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u9632\u6b62<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\uff1a\u5927\u304d\u306a\u914d\u5217\u3092\u751f\u6210\n   def process_large_range\n     result = []\n     (1..1_000_000).each do |n|\n       result &lt;&lt; n if n.even?\n     end\n     result\n   end\n\n   # \u4fee\u6b63\u3057\u305f\u30b3\u30fc\u30c9\uff1a\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\n   def process_large_range\n     Enumerator.new do |yielder|\n       (1..1_000_000).each do |n|\n         yielder &lt;&lt; n if n.even?\n       end\n     end\n   end<\/pre>\n\n\n\n<p>\u4e00\u822c\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u306e\u30d2\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7bc4\u56f2\u306e\u5185\u5bb9\u3092\u78ba\u8a8d<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u30c7\u30d0\u30c3\u30b0\u7528\u306e\u30d8\u30eb\u30d1\u30fc\u30e1\u30bd\u30c3\u30c9\n   def debug_range(range)\n     {\n       begin: range.begin,\n       end: range.end,\n       exclude_end?: range.exclude_end?,\n       size: range.size,\n       first_5: range.first(5),\n       last_5: range.last(5)\n     }\n   end<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u5883\u754c\u5024\u306e\u30c6\u30b9\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # \u7bc4\u56f2\u306e\u5883\u754c\u5024\u3092\u30c6\u30b9\u30c8\u3059\u308b\u30e1\u30bd\u30c3\u30c9\n   def test_range_boundaries(range)\n     {\n       includes_begin: range.include?(range.begin),\n       includes_end: range.include?(range.end),\n       before_begin: range.include?(range.begin - 1),\n       after_end: range.include?(range.end + 1)\n     }\n   end<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u6ce8\u610f\u3092\u6255\u3044\u3001\u9069\u5207\u306a\u5bfe\u7b56\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30c7\u30d0\u30c3\u30b0\u30c4\u30fc\u30eb\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u306e\u65e9\u671f\u767a\u898b\u3068\u89e3\u6c7a\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-18\">\u5b9f\u52d9\u3067\u306e\u6d3b\u7528\u4e8b\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u3067\u306e\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p>Range\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u5b9f\u88c5\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   class Paginator\n     def initialize(total_items, per_page = 20)\n       @total_items = total_items\n       @per_page = per_page\n     end\n\n     def page_range(current_page)\n       start_index = (current_page - 1) * @per_page\n       end_index = [start_index + @per_page - 1, @total_items - 1].min\n\n       (start_index..end_index)\n     end\n\n     def total_pages\n       (@total_items.to_f \/ @per_page).ceil\n     end\n   end\n\n   # \u4f7f\u7528\u4f8b\n   paginator = Paginator.new(95)\n   items = Model.all[paginator.page_range(2)]<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30da\u30fc\u30b8\u756a\u53f7\u306e\u8868\u793a\u7bc4\u56f2\u8a08\u7b97<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   def visible_page_numbers(current_page, total_pages)\n     radius = 2 # \u73fe\u5728\u306e\u30da\u30fc\u30b8\u306e\u524d\u5f8c\u306b\u8868\u793a\u3059\u308b\u30da\u30fc\u30b8\u6570\n\n     start_page = [1, current_page - radius].max\n     end_page = [total_pages, current_page + radius].min\n\n     # \u30da\u30fc\u30b8\u7bc4\u56f2\u3092\u8fd4\u3059\n     (start_page..end_page).to_a\n   end<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u65e5\u4ed8\u7bc4\u56f2\u51e6\u7406\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u65e5\u4ed8\u7bc4\u56f2\u306e\u51e6\u7406\u306b\u304a\u3051\u308bRange\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u65e5\u4ed8\u7bc4\u56f2\u306e\u751f\u6210\u3068\u51e6\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   require 'date'\n\n   class DateRangeProcessor\n     def initialize(start_date, end_date)\n       @date_range = (start_date..end_date)\n     end\n\n     def business_days\n       @date_range.select { |date| (1..5).include?(date.wday) }\n     end\n\n     def weekends\n       @date_range.select { |date| [0, 6].include?(date.wday) }\n     end\n\n     def months\n       @date_range.map { |date| Date.new(date.year, date.month, 1) }.uniq\n     end\n   end\n\n   # \u4f7f\u7528\u4f8b\n   processor = DateRangeProcessor.new(Date.today, Date.today + 30)\n   business_days = processor.business_days<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u671f\u9593\u306e\u91cd\u8907\u30c1\u30a7\u30c3\u30af<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   class DateRange\n     def initialize(start_date, end_date)\n       @range = (start_date..end_date)\n     end\n\n     def overlaps?(other_range)\n       @range.begin &lt;= other_range.end &amp;&amp; \n         other_range.begin &lt;= @range.end\n     end\n\n     def contains?(date)\n       @range.cover?(date)\n     end\n   end<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u30c7\u30fc\u30bf\u691c\u8a3c\u3067\u306e\u4f7f\u7528\u4f8b<\/h3>\n\n\n\n<p>\u30c7\u30fc\u30bf\u691c\u8a3c\u306b\u304a\u3051\u308bRange\u306e\u6d3b\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   class ValidationRules\n     VALID_AGE_RANGE = (18..65)\n     VALID_SCORE_RANGE = (0..100)\n     VALID_PRICE_RANGE = (1000..1_000_000)\n\n     def self.validate_user(user)\n       errors = []\n\n       unless VALID_AGE_RANGE.include?(user.age)\n         errors &lt;&lt; \"Age must be between #{VALID_AGE_RANGE.begin} and #{VALID_AGE_RANGE.end}\"\n       end\n\n       unless VALID_SCORE_RANGE.include?(user.score)\n         errors &lt;&lt; \"Score must be between #{VALID_SCORE_RANGE.begin} and #{VALID_SCORE_RANGE.end}\"\n       end\n\n       errors\n     end\n   end<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6570\u5024\u7bc4\u56f2\u306e\u6b63\u898f\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   module RangeNormalizer\n     def self.normalize_percentage(value)\n       case value\n       when -Float::INFINITY...0 then 0\n       when 0..100 then value\n       when 100..Float::INFINITY then 100\n       end\n     end\n\n     def self.normalize_score(value, range = (0..100))\n       value = [value, range.begin].max\n       value = [value, range.end].min\n       value\n     end\n   end<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u306f\u3001\u5b9f\u52d9\u3067\u3088\u304f\u906d\u9047\u3059\u308b\u554f\u984c\u306b\u5bfe\u3059\u308b\u52b9\u679c\u7684\u306a\u89e3\u6c7a\u7b56\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002Range\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":{"0":"post-1501","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-ruby","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1501"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1501\/revisions"}],"predecessor-version":[{"id":1502,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1501\/revisions\/1502"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}