{"id":1330,"date":"2025-03-24T08:52:20","date_gmt":"2025-03-23T23:52:20","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1330"},"modified":"2025-03-24T08:52:20","modified_gmt":"2025-03-23T23:52:20","slug":"%e3%80%90%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%e3%80%91ruby%e3%81%ae%e3%83%a9%e3%83%a0%e3%83%80%e5%bc%8f%e5%85%a5%e9%96%80%ef%bc%81%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%a8%e5%ae%9f%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1330","title":{"rendered":"\u3010\u5b8c\u5168\u30ac\u30a4\u30c9\u3011Ruby\u306e\u30e9\u30e0\u30c0\u5f0f\u5165\u9580\uff01\u4f7f\u3044\u65b9\u3068\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u6cd57\u9078"},"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\u306e\u30e9\u30e0\u30c0\u5f0f\u3068\u306f\uff1f\u57fa\u790e\u304b\u3089\u7406\u89e3\u3059\u308b\u5fc5\u9808\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u30e9\u30e0\u30c0\u5f0f\u304c\u751f\u307e\u308c\u305f\u80cc\u666f\u3068\u91cd\u8981\u6027<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">Proc\u3068\u30e9\u30e0\u30c0\u5f0f\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">\u30e9\u30e0\u30c0\u5f0f\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3088\u3046<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u30e9\u30e0\u30c0\u5f0f\u306e\u6b63\u3057\u3044\u5b9a\u7fa9\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-5\">\u5f15\u6570\u306e\u6e21\u3057\u65b9\u3068\u30b9\u30b3\u30fc\u30d7\u306e\u7406\u89e3<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-6\">\u623b\u308a\u5024\u306e\u5236\u5fa1\u3068return\u306e\u6319\u52d5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-7\">\u5b9f\u8df5\u3067\u6d3b\u304d\u308b\u30e9\u30e0\u30c0\u5f0f\u306e\u6d3b\u7528\u30d1\u30bf\u30fc\u30f37\u9078<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-8\">\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u51e6\u7406\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-9\">\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u3067\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-10\">\u6761\u4ef6\u5206\u5c90\u306e\u30b9\u30de\u30fc\u30c8\u306a\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-11\">\u30a4\u30c6\u30ec\u30fc\u30bf\u3068\u3057\u3066\u306e\u6d3b\u7528\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-12\">\u30ab\u30ea\u30fc\u5316\u306b\u3088\u308b\u67d4\u8edf\u306a\u95a2\u6570\u8a2d\u8a08<\/a>      <\/li>      <li>        <a href=\"#i-13\">\u30c7\u30b3\u30ec\u30fc\u30bf\u30d1\u30bf\u30fc\u30f3\u3078\u306e\u5fdc\u7528<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">\u30e1\u30e2\u5316\u306b\u3088\u308b\u51e6\u7406\u306e\u6700\u9069\u5316<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-15\">\u30e9\u30e0\u30c0\u5f0f\u6d3b\u7528\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-16\">\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u898f\u7d04<\/a>      <\/li>      <li>        <a href=\"#i-17\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u30c6\u30b9\u30c8\u53ef\u80fd\u6027\u3092\u62c5\u4fdd\u3059\u308b\u8a2d\u8a08\u624b\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-19\">\u3088\u304f\u3042\u308b\u30c8\u30e9\u30d6\u30eb\u3068\u89e3\u6c7a\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-20\">\u30b9\u30b3\u30fc\u30d7\u95a2\u9023\u306e\u554f\u984c\u3068\u5bfe\u51e6\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-21\">\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u305f\u3081\u306e\u6ce8\u610f\u70b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-22\">\u30c7\u30d0\u30c3\u30b0\u6642\u306e\u52b9\u679c\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1<\/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\u306e\u30e9\u30e0\u30c0\u5f0f\u3068\u306f\uff1f\u57fa\u790e\u304b\u3089\u7406\u89e3\u3059\u308b\u5fc5\u9808\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u30e9\u30e0\u30c0\u5f0f\u304c\u751f\u307e\u308c\u305f\u80cc\u666f\u3068\u91cd\u8981\u6027<\/h3>\n\n\n\n<p>Ruby\u306e\u30e9\u30e0\u30c0\u5f0f\u306f\u3001\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u6982\u5ff5\u3092\u53d6\u308a\u5165\u308c\u305f\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u51e6\u7406\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u6271\u3048\u308b\u300c\u7b2c\u4e00\u7d1a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u300d\u3068\u3057\u3066\u306e\u95a2\u6570\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u304c\u751f\u307e\u308c\u305f\u4e3b\u306a\u80cc\u666f\u306b\u306f\u4ee5\u4e0b\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u9700\u8981\u5897\u52a0<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u306e\u5411\u4e0a<\/li>\n\n\n\n<li>\u526f\u4f5c\u7528\u306e\u5c11\u306a\u3044\u7d14\u7c8b\u306a\u95a2\u6570\u306e\u5b9f\u73fe<\/li>\n\n\n\n<li>\u9ad8\u968e\u95a2\u6570\u306b\u3088\u308b\u67d4\u8edf\u306a\u51e6\u7406\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u51e6\u7406\u306e\u30ab\u30d7\u30bb\u30eb\u5316\u3068\u30b9\u30b3\u30fc\u30d7\u306e\u5236\u5fa1<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30af\u30ed\u30fc\u30b8\u30e3\u3068\u3057\u3066\u306e\u6a5f\u80fd<\/li>\n\n\n\n<li>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u4fdd\u6301<\/li>\n\n\n\n<li>\u9045\u5ef6\u8a55\u4fa1\u306e\u5b9f\u73fe<\/li>\n<\/ul>\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=\"\"># \u5f93\u6765\u306e\u65b9\u6cd5\uff08\u30e1\u30bd\u30c3\u30c9\u5b9a\u7fa9\uff09\ndef double(x)\n  x * 2\nend\n\n# \u30e9\u30e0\u30c0\u5f0f\u306b\u3088\u308b\u5b9f\u88c5\ndouble = -&gt;(x) { x * 2 }\n\n# \u4e21\u8005\u306e\u4f7f\u7528\u4f8b\nputs double.call(5)  # \u51fa\u529b: 10<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">Proc\u3068\u30e9\u30e0\u30c0\u5f0f\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044<\/h3>\n\n\n\n<p>Ruby\u306b\u306fProc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u30e9\u30e0\u30c0\u5f0f\u3068\u3044\u30462\u3064\u306e\u4f3c\u3066\u975e\u306a\u308b\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4e3b\u8981\u306a\u9055\u3044\u3092\u307e\u3068\u3081\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5f15\u6570\u306e\u30c1\u30a7\u30c3\u30af<\/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=\"\"># Lambda\u306f\u5f15\u6570\u306e\u6570\u3092\u53b3\u5bc6\u306b\u30c1\u30a7\u30c3\u30af\nlambda_example = -&gt;(x, y) { x + y }\nbegin\n  lambda_example.call(1)  # ArgumentError\u767a\u751f\nrescue ArgumentError =&gt; e\n  puts \"Lambda: #{e.message}\"\nend\n\n# Proc\u306f\u5f15\u6570\u306e\u6570\u3092\u67d4\u8edf\u306b\u51e6\u7406\nproc_example = Proc.new { |x, y| x + y }\nputs proc_example.call(1)  # nil + 1 =&gt; nil<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>return\u306e\u6319\u52d5<\/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 lambda_return\n  l = -&gt; { return 1 }\n  l.call\n  return 2\nend\n\ndef proc_return\n  p = Proc.new { return 1 }\n  p.call\n  return 2\nend\n\nputs lambda_return  # \u51fa\u529b: 2\nputs proc_return   # \u51fa\u529b: 1<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u30d6\u30ed\u30c3\u30af\u5f15\u6570\u306e\u6271\u3044<\/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 demonstrate_block(&amp;block)\n  puts \"Block type: #{block.class}\"\n  puts \"Is lambda? #{block.lambda?}\"\nend\n\n# \u30e9\u30e0\u30c0\u3092\u6e21\u3059\ndemonstrate_block(&amp;-&gt;(x) { x * 2 })\n# Block type: Proc\n# Is lambda? true\n\n# \u901a\u5e38\u306e\u30d6\u30ed\u30c3\u30af\u3092\u6e21\u3059\ndemonstrate_block { |x| x * 2 }\n# Block type: Proc\n# Is lambda? false<\/pre>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u306e\u4e3b\u306a\u7279\u5fb4\u3068\u5229\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30bd\u30c3\u30c9\u306e\u3088\u3046\u306a\u53b3\u5bc6\u306a\u5f15\u6570\u30c1\u30a7\u30c3\u30af<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d0\u30b0\u306e\u65e9\u671f\u767a\u898b\u306b\u8ca2\u732e<\/li>\n\n\n\n<li>\u578b\u5b89\u5168\u6027\u306e\u5411\u4e0a<\/li>\n\n\n\n<li>API\u306e\u660e\u78ba\u306a\u5b9a\u7fa9<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e88\u6e2c\u53ef\u80fd\u306areturn\u306e\u6319\u52d5<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30b3\u30fc\u30d7\u304c\u660e\u78ba<\/li>\n\n\n\n<li>\u30c7\u30d0\u30c3\u30b0\u304c\u5bb9\u6613<\/li>\n\n\n\n<li>\u526f\u4f5c\u7528\u306e\u5236\u5fa1\u304c\u7c21\u5358<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3068\u306e\u89aa\u548c\u6027<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9ad8\u968e\u95a2\u6570\u3068\u3057\u3066\u306e\u5229\u7528<\/li>\n\n\n\n<li>\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u3068\u306e\u76f8\u6027<\/li>\n\n\n\n<li>\u9045\u5ef6\u8a55\u4fa1\u306e\u5b9f\u73fe<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u7279\u5fb4\u306b\u3088\u308a\u3001\u30e9\u30e0\u30c0\u5f0f\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u7279\u306b\u5a01\u529b\u3092\u767a\u63ee\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u51e6\u7406\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u5b9a\u7fa9<\/li>\n\n\n\n<li>\u95a2\u6570\u306e\u5408\u6210<\/li>\n\n\n\n<li>\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/li>\n\n\n\n<li>\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30ed\u30b8\u30c3\u30af\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u30e9\u30e0\u30c0\u5f0f\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3088\u3046<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u30e9\u30e0\u30c0\u5f0f\u306e\u6b63\u3057\u3044\u5b9a\u7fa9\u65b9\u6cd5<\/h3>\n\n\n\n<p>Ruby\u3067\u30e9\u30e0\u30c0\u5f0f\u3092\u5b9a\u7fa9\u3059\u308b\u65b9\u6cd5\u306f\u4e3b\u306b2\u3064\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7701\u7565\u8a18\u6cd5\uff08\u63a8\u5968\uff09<\/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=\"\"># \u57fa\u672c\u5f62\nsum = -&gt;(a, b) { a + b }\n\n# \u8907\u6570\u884c\u306e\u51e6\u7406\u3092\u542b\u3080\u5834\u5408\ncalculate = -&gt;(x, y) {\n  result = x * y\n  result + 100\n}\n\n# \u5f15\u6570\u304c\u306a\u3044\u5834\u5408\ngreet = -&gt; { puts \"Hello!\" }\n\n# \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u8a2d\u5b9a\nmultiply = -&gt;(x, y = 2) { x * y }<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>lambda \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5<\/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=\"\"># \u57fa\u672c\u5f62\nsum = lambda { |a, b| a + b }\n\n# \u8907\u6570\u884c\u306e\u51e6\u7406\ncalculate = lambda do |x, y|\n  result = x * y\n  result + 100\nend<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u5f15\u6570\u306e\u6e21\u3057\u65b9\u3068\u30b9\u30b3\u30fc\u30d7\u306e\u7406\u89e3<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u306b\u304a\u3051\u308b\u5f15\u6570\u306e\u6271\u3044\u65b9\u3068\u30b9\u30b3\u30fc\u30d7\u306e\u7279\u5fb4\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5f15\u6570\u306e\u6e21\u3057\u65b9<\/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=\"\"># \u57fa\u672c\u7684\u306a\u5f15\u6570\u306e\u6e21\u3057\u65b9\ngreet = -&gt;(name) { \"Hello, #{name}!\" }\nputs greet.call(\"Ruby\")  # \"Hello, Ruby!\"\nputs greet[\"Ruby\"]       # \u540c\u3058\u7d50\u679c\nputs greet.(\"Ruby\")      # \u540c\u3058\u7d50\u679c\n\n# \u53ef\u5909\u9577\u5f15\u6570\nsum = -&gt;(*numbers) { numbers.reduce(:+) }\nputs sum.call(1, 2, 3, 4)  # 10\n\n# \u30ad\u30fc\u30ef\u30fc\u30c9\u5f15\u6570\nuser_info = -&gt;(name:, age: nil) {\n  age ? \"#{name} (#{age})\" : name\n}\nputs user_info.call(name: \"Alice\", age: 25)  # \"Alice (25)\"<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u30b9\u30b3\u30fc\u30d7\u3068\u30af\u30ed\u30fc\u30b8\u30e3<\/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 create_multiplier(factor)\n  -&gt;(x) { x * factor }\nend\n\n# \u30af\u30ed\u30fc\u30b8\u30e3\u3068\u3057\u3066\u5916\u90e8\u5909\u6570\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\ndouble = create_multiplier(2)\ntriple = create_multiplier(3)\n\nputs double.call(5)  # 10\nputs triple.call(5)  # 15\n\n# \u5909\u6570\u306e\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\nname = \"outer\"\ngreet = -&gt; {\n  name = \"inner\"\n  puts \"Hello, #{name}!\"\n}\ngreet.call  # \"Hello, inner!\"\nputs name   # \"outer\" \uff08\u5916\u90e8\u306e\u30b9\u30b3\u30fc\u30d7\u306f\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044\uff09<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u623b\u308a\u5024\u306e\u5236\u5fa1\u3068return\u306e\u6319\u52d5<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u3067\u306e\u623b\u308a\u5024\u306e\u6271\u3044\u65b9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6697\u9ed9\u306e\u623b\u308a\u5024<\/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=\"\"># \u6700\u5f8c\u306b\u8a55\u4fa1\u3055\u308c\u305f\u5f0f\u304c\u623b\u308a\u5024\u306b\u306a\u308b\ncalculate = -&gt;(x, y) {\n  result = x + y\n  result * 2  # \u3053\u306e\u5024\u304c\u623b\u308a\u5024\u3068\u306a\u308b\n}\nputs calculate.call(3, 4)  # 14<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u660e\u793a\u7684\u306areturn<\/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=\"\"># \u30e9\u30e0\u30c0\u5f0f\u5185\u3067\u306ereturn\nprocess_number = -&gt;(x) {\n  return 0 if x &lt; 0  # \u65e9\u671f\u30ea\u30bf\u30fc\u30f3\n  return x * 2\n}\nputs process_number.call(-5)  # 0\nputs process_number.call(5)   # 10\n\n# \u30e1\u30bd\u30c3\u30c9\u5185\u3067\u306e\u30e9\u30e0\u30c0\u5f0f\u306ereturn\ndef example_method\n  l = -&gt; { return 42 }\n  l.call         # \u30e9\u30e0\u30c0\u5f0f\u306e\u30b9\u30b3\u30fc\u30d7\u5185\u3067\u306e\u307freturn\u304c\u6709\u52b9\n  puts \"\u7d9a\u884c\"    # \u3053\u306e\u884c\u306f\u5b9f\u884c\u3055\u308c\u308b\n  return \"\u5b8c\u4e86\"\nend\nputs example_method  # \"\u5b8c\u4e86\"<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u6761\u4ef6\u5206\u5c90\u3068\u623b\u308a\u5024<\/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=\"\">status_check = -&gt;(value) {\n  case value\n  when 0..9\n    \"\u4e00\u6841\"\n  when 10..99\n    \"\u4e8c\u6841\"\n  else\n    \"\u4e09\u6841\u4ee5\u4e0a\"\n  end\n}\n\nputs status_check.call(5)    # \"\u4e00\u6841\"\nputs status_check.call(42)   # \"\u4e8c\u6841\"\nputs status_check.call(100)  # \"\u4e09\u6841\u4ee5\u4e0a\"<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306aTips\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u3067\u306e\u4f7f\u7528<\/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=\"\"># \u914d\u5217\u306e\u51e6\u7406\u3067\u30e9\u30e0\u30c0\u5f0f\u3092\u6d3b\u7528\nnumbers = [1, 2, 3, 4, 5]\nprocess = numbers\n  .map(-&gt;(x) { x * 2 })\n  .select(-&gt;(x) { x &gt; 5 })\n  .reduce(-&gt;(acc, x) { acc + x })<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/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=\"\">safe_divide = -&gt;(x, y) {\n  begin\n    x \/ y\n  rescue ZeroDivisionError\n    \"\u30bc\u30ed\u306b\u3088\u308b\u9664\u7b97\u306f\u3067\u304d\u307e\u305b\u3093\"\n  end\n}\n\nputs safe_divide.call(10, 2)   # 5\nputs safe_divide.call(10, 0)   # \"\u30bc\u30ed\u306b\u3088\u308b\u9664\u7b97\u306f\u3067\u304d\u307e\u305b\u3093\"<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u3092\u62bc\u3055\u3048\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u30e9\u30e0\u30c0\u5f0f\u306e\u6d3b\u7528\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">\u5b9f\u8df5\u3067\u6d3b\u304d\u308b\u30e9\u30e0\u30c0\u5f0f\u306e\u6d3b\u7528\u30d1\u30bf\u30fc\u30f37\u9078<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u51e6\u7406\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u975e\u540c\u671f\u51e6\u7406\u3084\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u7279\u306b\u6709\u7528\u3067\u3059\u3002<\/p>\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 FileProcessor\n  def initialize(success: nil, error: nil)\n    @on_success = success || -&gt;(result) { puts \"\u51e6\u7406\u6210\u529f: #{result}\" }\n    @on_error = error || -&gt;(error) { puts \"\u30a8\u30e9\u30fc\u767a\u751f: #{error.message}\" }\n  end\n\n  def process(file_path)\n    content = File.read(file_path)\n    @on_success.call(content)\n  rescue =&gt; e\n    @on_error.call(e)\n  end\nend\n\n# \u30ab\u30b9\u30bf\u30e0\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u4f7f\u7528\u4f8b\nprocessor = FileProcessor.new(\n  success: -&gt;(content) { puts \"\u30d5\u30a1\u30a4\u30eb\u5185\u5bb9: #{content.length}\u6587\u5b57\" },\n  error: -&gt;(e) { puts \"\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u30a8\u30e9\u30fc: #{e.message}\" }\n)\n\nprocessor.process(\"example.txt\")<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u3067\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u6cd5<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u306f\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u3067\u306e\u51e6\u7406\u3092\u3088\u308a\u67d4\u8edf\u306b\u3057\u307e\u3059\u3002<\/p>\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 QueryBuilder\n  def initialize(relation)\n    @relation = relation\n    @transformations = []\n  end\n\n  def add_transformation(transform)\n    @transformations &lt;&lt; transform\n    self\n  end\n\n  def execute\n    @transformations.reduce(@relation) { |result, transform| transform.call(result) }\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nusers = User.all\nquery = QueryBuilder.new(users)\n  .add_transformation(-&gt;(rel) { rel.where(active: true) })\n  .add_transformation(-&gt;(rel) { rel.order(created_at: :desc) })\n  .add_transformation(-&gt;(rel) { rel.limit(10) })\n  .execute<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u6761\u4ef6\u5206\u5c90\u306e\u30b9\u30de\u30fc\u30c8\u306a\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u6761\u4ef6\u5206\u5c90\u3092\u30e9\u30e0\u30c0\u5f0f\u3067\u8868\u73fe\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5ba3\u8a00\u7684\u306a\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u307e\u3059\u3002<\/p>\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 PaymentProcessor\n  PAYMENT_HANDLERS = {\n    credit_card: -&gt;(amount) {\n      # \u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9\u6c7a\u6e08\u306e\u51e6\u7406\n      puts \"#{amount}\u5186\u3092\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9\u3067\u6c7a\u6e08\"\n    },\n    bank_transfer: -&gt;(amount) {\n      # \u9280\u884c\u632f\u8fbc\u306e\u51e6\u7406\n      puts \"#{amount}\u5186\u3092\u9280\u884c\u632f\u8fbc\u3067\u6c7a\u6e08\"\n    },\n    convenience_store: -&gt;(amount) {\n      # \u30b3\u30f3\u30d3\u30cb\u6c7a\u6e08\u306e\u51e6\u7406\n      puts \"#{amount}\u5186\u3092\u30b3\u30f3\u30d3\u30cb\u6c7a\u6e08\u3067\u51e6\u7406\"\n    }\n  }\n\n  def process_payment(method, amount)\n    handler = PAYMENT_HANDLERS[method] || \n      -&gt;(amount) { raise \"\u672a\u5bfe\u5fdc\u306e\u6c7a\u6e08\u65b9\u6cd5: #{method}\" }\n    handler.call(amount)\n  end\nend\n\nprocessor = PaymentProcessor.new\nprocessor.process_payment(:credit_card, 1000)<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u30a4\u30c6\u30ec\u30fc\u30bf\u3068\u3057\u3066\u306e\u6d3b\u7528\u4f8b<\/h3>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u5b9f\u88c5\u306b\u30e9\u30e0\u30c0\u5f0f\u3092\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\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 TreeNode\n  attr_accessor :value, :left, :right\n\n  def initialize(value)\n    @value = value\n    @left = nil\n    @right = nil\n  end\n\n  TRAVERSAL_STRATEGIES = {\n    pre_order: -&gt;(node, &amp;block) {\n      return unless node\n      block.call(node.value)\n      node.left&amp;.traverse(:pre_order, &amp;block)\n      node.right&amp;.traverse(:pre_order, &amp;block)\n    },\n    in_order: -&gt;(node, &amp;block) {\n      return unless node\n      node.left&amp;.traverse(:in_order, &amp;block)\n      block.call(node.value)\n      node.right&amp;.traverse(:in_order, &amp;block)\n    },\n    post_order: -&gt;(node, &amp;block) {\n      return unless node\n      node.left&amp;.traverse(:post_order, &amp;block)\n      node.right&amp;.traverse(:post_order, &amp;block)\n      block.call(node.value)\n    }\n  }\n\n  def traverse(strategy, &amp;block)\n    TRAVERSAL_STRATEGIES[strategy].call(self, &amp;block)\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nroot = TreeNode.new(1)\nroot.left = TreeNode.new(2)\nroot.right = TreeNode.new(3)\n\nroot.traverse(:in_order) { |value| puts value }<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30ab\u30ea\u30fc\u5316\u306b\u3088\u308b\u67d4\u8edf\u306a\u95a2\u6570\u8a2d\u8a08<\/h3>\n\n\n\n<p>\u30ab\u30ea\u30fc\u5316\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u306a\u95a2\u6570\u5408\u6210\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\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 FunctionComposer\n  def self.curry_lambda(lambda_obj, arity)\n    return lambda_obj if arity &lt;= 1\n\n    -&gt;(*args) {\n      if args.length &gt;= arity\n        lambda_obj.call(*args)\n      else\n        -&gt;(*(remaining_args)) { lambda_obj.call(*args, *remaining_args) }\n      end\n    }\n  end\nend\n\n# \u4f7f\u7528\u4f8b\ncalculate = -&gt;(x, y, z) { (x + y) * z }\ncurried_calc = FunctionComposer.curry_lambda(calculate, 3)\n\n# \u90e8\u5206\u9069\u7528\nadd_five = curried_calc.call(5)\nmultiply_sum = add_five.call(3)\nresult = multiply_sum.call(2)  # (5 + 3) * 2 = 16<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30c7\u30b3\u30ec\u30fc\u30bf\u30d1\u30bf\u30fc\u30f3\u3078\u306e\u5fdc\u7528<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u3063\u3066\u30e1\u30bd\u30c3\u30c9\u3092\u30c7\u30b3\u30ec\u30fc\u30c8\u3059\u308b\u5b9f\u88c5\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\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 MethodDecorator\n  def decorate_method(method_name, decorator)\n    original_method = instance_method(method_name)\n\n    define_method(method_name) do |*args, &amp;block|\n      decorator.call(original_method.bind(self), *args, &amp;block)\n    end\n  end\nend\n\nclass Calculator\n  extend MethodDecorator\n\n  def add(x, y)\n    x + y\n  end\n\n  # \u30e1\u30bd\u30c3\u30c9\u306e\u30c7\u30b3\u30ec\u30fc\u30c8\n  logging_decorator = -&gt;(method, *args, &amp;block) {\n    puts \"\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057: \u5f15\u6570 #{args.inspect}\"\n    result = method.call(*args, &amp;block)\n    puts \"\u30e1\u30bd\u30c3\u30c9\u7d42\u4e86: \u7d50\u679c #{result}\"\n    result\n  }\n\n  decorate_method :add, logging_decorator\nend\n\ncalc = Calculator.new\ncalc.add(5, 3)<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30e1\u30e2\u5316\u306b\u3088\u308b\u51e6\u7406\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30e2\u5316\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\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 Memoizer\n  def self.memoize\n    cache = {}\n    -&gt;(key, &amp;block) {\n      if cache.key?(key)\n        puts \"\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8: #{key}\"\n        cache[key]\n      else\n        puts \"\u8a08\u7b97\u5b9f\u884c: #{key}\"\n        cache[key] = block.call\n      end\n    }\n  end\nend\n\n# \u30d5\u30a3\u30dc\u30ca\u30c3\u30c1\u6570\u5217\u306e\u8a08\u7b97\u3092\u30e1\u30e2\u5316\nfib_calc = Memoizer.memoize\nfibonacci = -&gt;(n) {\n  return n if n &lt;= 1\n  fib_calc.call(n - 1) { fibonacci.call(n - 1) } +\n  fib_calc.call(n - 2) { fibonacci.call(n - 2) }\n}\n\nputs fibonacci.call(10)  # \u6700\u521d\u306e\u5b9f\u884c\nputs fibonacci.call(10)  # \u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u53d6\u5f97<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u5b9f\u8df5\u7684\u306a\u4f8b\u3067\u3059\u3002\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3001\u4fdd\u5b88\u6027\u3001\u518d\u5229\u7528\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">\u30e9\u30e0\u30c0\u5f0f\u6d3b\u7528\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u898f\u7d04<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u53ef\u8aad\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u547d\u540d\u898f\u5247<\/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=\"\"># \u826f\u3044\u4f8b\uff1a\u76ee\u7684\u304c\u660e\u78ba\u306a\u547d\u540d\nuser_transformer = -&gt;(user) { { name: user.name, age: user.age } }\nactive_filter = -&gt;(record) { record.status == 'active' }\n\n# \u60aa\u3044\u4f8b\uff1a\u62bd\u8c61\u7684\u3059\u304e\u308b\u547d\u540d\ntransformer = -&gt;(x) { { name: x.name, age: x.age } }\nfilter = -&gt;(x) { x.status == 'active' }<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u9069\u5207\u306a\u9577\u3055\u3068\u8907\u96d1\u3055<\/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=\"\"># \u826f\u3044\u4f8b\uff1a\u5358\u4e00\u8cac\u4efb\u306e\u539f\u5247\u306b\u5f93\u3063\u305f\u5b9f\u88c5\nvalidate_email = -&gt;(email) {\n  email.match?(\/\\A[\\w+\\-.]+@[a-z\\d\\-]+(\\.[a-z\\d\\-]+)*\\.[a-z]+\\z\/i)\n}\n\n# \u60aa\u3044\u4f8b\uff1a\u8907\u6570\u306e\u8cac\u4efb\u304c\u6df7\u5728\nprocess_user = -&gt;(user) {\n  # \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n  unless user.email.match?(\/\\A[\\w+\\-.]+@[a-z\\d\\-]+(\\.[a-z\\d\\-]+)*\\.[a-z]+\\z\/i)\n    raise \"Invalid email\"\n  end\n\n  # \u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u6697\u53f7\u5316\n  user.encrypted_password = BCrypt::Password.create(user.password)\n\n  # \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u4fdd\u5b58\n  user.save!\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u30c9\u30ad\u30e5\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3<\/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=\"\"># \u826f\u3044\u4f8b\uff1a\u76ee\u7684\u3068\u4f7f\u7528\u65b9\u6cd5\u304c\u660e\u78ba\n# @param record [ActiveRecord::Base] \u51e6\u7406\u5bfe\u8c61\u306e\u30ec\u30b3\u30fc\u30c9\n# @return [Boolean] \u30a2\u30af\u30c6\u30a3\u30d6\u306a\u72b6\u614b\u3067\u3042\u308c\u3070true\nis_active = -&gt;(record) {\n  record.status == 'active' &amp;&amp; !record.deleted_at\n}\n\n# \u60aa\u3044\u4f8b\uff1a\u8aac\u660e\u4e0d\u8db3\ncheck = -&gt;(r) { r.status == 'active' &amp;&amp; !r.deleted_at }<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30e2\u5316\u306e\u9069\u5207\u306a\u4f7f\u7528<\/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 ExpensiveCalculation\n  def initialize\n    @cache = {}\n    @calculate = -&gt;(input) {\n      @cache[input] ||= begin\n        puts \"\u8a08\u7b97\u5b9f\u884c: #{input}\"\n        # \u91cd\u3044\u8a08\u7b97\u306e\u5b9f\u884c\n        sleep(1)\n        input * input\n      end\n    }\n  end\n\n  def calculate(input)\n    @calculate.call(input)\n  end\nend\n\ncalc = ExpensiveCalculation.new\nputs calc.calculate(5)  # \u6700\u521d\u306e\u5b9f\u884c\nputs calc.calculate(5)  # \u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u53d6\u5f97<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u4e0d\u8981\u306a\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u56de\u907f<\/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=\"\"># \u826f\u3044\u4f8b\uff1a\u5fc5\u8981\u306a\u5909\u6570\u306e\u307f\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\ndef create_multiplier(factor)\n  -&gt;(x) { x * factor }\nend\n\n# \u60aa\u3044\u4f8b\uff1a\u4e0d\u8981\u306a\u5909\u6570\u3092\u3059\u3079\u3066\u30ad\u30e3\u30d7\u30c1\u30e3\ndef create_processor(factor)\n  temporary_data = \"\u4e0d\u8981\u306a\u30c7\u30fc\u30bf\"\n  large_array = Array.new(1000) { |i| i }\n\n  -&gt;(x) { x * factor } # temporary_data\u3068large_array\u306f\u4e0d\u8981\u3060\u304c\u30ad\u30e3\u30d7\u30c1\u30e3\u3055\u308c\u308b\nend<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u9045\u5ef6\u8a55\u4fa1\u306e\u6d3b\u7528<\/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 QueryBuilder\n  def initialize\n    @conditions = []\n  end\n\n  def where(&amp;block)\n    @conditions &lt;&lt; block\n    self\n  end\n\n  def execute(records)\n    @conditions.reduce(records) do |filtered_records, condition|\n      filtered_records.select(&amp;condition)\n    end\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nquery = QueryBuilder.new\n  .where { |record| record.active? }\n  .where { |record| record.created_at &gt; 1.day.ago }\n\nresult = query.execute(User.all)  # \u6761\u4ef6\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u6642\u70b9\u3067\u8a55\u4fa1<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u30c6\u30b9\u30c8\u53ef\u80fd\u6027\u3092\u62c5\u4fdd\u3059\u308b\u8a2d\u8a08\u624b\u6cd5<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u3092\u30c6\u30b9\u30c8\u53ef\u80fd\u306b\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4f9d\u5b58\u6027\u306e\u6ce8\u5165<\/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 UserService\n  def initialize(validator: nil, notifier: nil)\n    @validate_email = validator || -&gt;(email) {\n      email.match?(\/\\A[\\w+\\-.]+@[a-z\\d\\-]+(\\.[a-z\\d\\-]+)*\\.[a-z]+\\z\/i)\n    }\n\n    @notify_user = notifier || -&gt;(user) {\n      puts \"Welcome #{user.name}!\"\n    }\n  end\n\n  def register_user(user)\n    if @validate_email.call(user.email)\n      user.save!\n      @notify_user.call(user)\n    end\n  end\nend\n\n# \u30c6\u30b9\u30c8\u3067\u306e\u30e2\u30c3\u30af\u4f7f\u7528\u4f8b\nRSpec.describe UserService do\n  let(:mock_validator) { -&gt;(email) { true } }\n  let(:mock_notifier) { -&gt;(user) { puts \"Mock notification\" } }\n\n  subject { UserService.new(validator: mock_validator, notifier: mock_notifier) }\n\n  it \"registers valid users\" do\n    user = User.new(email: \"test@example.com\")\n    expect { subject.register_user(user) }.not_to raise_error\n  end\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u526f\u4f5c\u7528\u306e\u5206\u96e2<\/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 PaymentProcessor\n  def initialize\n    @calculate_fee = -&gt;(amount) { (amount * 0.03).ceil }\n    @process_payment = -&gt;(amount, fee) {\n      # \u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u3068\u306e\u901a\u4fe1\u3092\u542b\u3080\u51e6\u7406\n      true\n    }\n  end\n\n  # \u7d14\u7c8b\u306a\u8a08\u7b97\u90e8\u5206\u306f\u5225\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u5207\u308a\u51fa\u3057\n  def calculate_total(amount)\n    fee = @calculate_fee.call(amount)\n    { amount: amount, fee: fee, total: amount + fee }\n  end\n\n  # \u526f\u4f5c\u7528\u3092\u542b\u3080\u51e6\u7406\u306f\u660e\u793a\u7684\u306b\u5206\u96e2\n  def execute_payment(amount)\n    result = calculate_total(amount)\n    @process_payment.call(result[:amount], result[:fee])\n  end\nend<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u660e\u78ba\u5316<\/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 SafeExecutor\n  def self.execute_safely(operation)\n    result = { success: false, data: nil, error: nil }\n\n    begin\n      result[:data] = operation.call\n      result[:success] = true\n    rescue StandardError =&gt; e\n      result[:error] = e.message\n    end\n\n    result\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nrisky_operation = -&gt; {\n  # \u5371\u967a\u306a\u64cd\u4f5c\n  raise \"\u30a8\u30e9\u30fc\u767a\u751f\" if rand &gt; 0.5\n  \"\u51e6\u7406\u6210\u529f\"\n}\n\nresult = SafeExecutor.execute_safely(risky_operation)\nputs result[:success] ? \"\u6210\u529f: #{result[:data]}\" : \"\u5931\u6557: #{result[:error]}\"<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u826f\u3044\u3001\u30c6\u30b9\u30c8\u53ef\u80fd\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-19\">\u3088\u304f\u3042\u308b\u30c8\u30e9\u30d6\u30eb\u3068\u89e3\u6c7a\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u30b9\u30b3\u30fc\u30d7\u95a2\u9023\u306e\u554f\u984c\u3068\u5bfe\u51e6\u6cd5<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u3067\u306e\u30b9\u30b3\u30fc\u30d7\u95a2\u9023\u306e\u554f\u984c\u306f\u975e\u5e38\u306b\u4e00\u822c\u7684\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u4e3b\u306a\u554f\u984c\u3068\u89e3\u6c7a\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5909\u6570\u306e\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u554f\u984c<\/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\nclass UserManager\n  def initialize\n    @users = []\n  end\n\n  def create_user_processor\n    # \u8b66\u544a: \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u3078\u306e\u53c2\u7167\u304c\u4e0d\u5b89\u5b9a\n    -&gt; { @users.each { |u| process_user(u) } }\n  end\nend\n\n# \u6539\u5584\u3055\u308c\u305f\u30b3\u30fc\u30c9\nclass UserManager\n  def initialize\n    @users = []\n  end\n\n  def create_user_processor\n    users = @users  # \u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306b\u30d0\u30a4\u30f3\u30c9\n    -&gt; { users.each { |u| process_user(u) } }\n  end\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u8aa4\u7528<\/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\ndef create_counter\n  count = 0\n  counters = []\n\n  3.times do\n    counters &lt;&lt; -&gt; { count += 1 }  # \u5168\u3066\u306e\u30e9\u30e0\u30c0\u304c\u540c\u3058count\u5909\u6570\u3092\u53c2\u7167\n  end\n\n  counters\nend\n\n# \u6539\u5584\u3055\u308c\u305f\u30b3\u30fc\u30c9\ndef create_counter\n  counters = []\n\n  3.times do\n    count = 0  # \u5404\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u3067\u65b0\u3057\u3044\u5909\u6570\u3092\u4f5c\u6210\n    counters &lt;&lt; -&gt; { count += 1 }\n  end\n\n  counters\nend<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u305f\u3081\u306e\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306f\u6df1\u523b\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5faa\u74b0\u53c2\u7167\u306e\u56de\u907f<\/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\nclass ResourceManager\n  def initialize\n    @resources = []\n    @cleanup_proc = -&gt; {\n      @resources.each { |r| r.cleanup }  # ResourceManager\u3078\u306e\u53c2\u7167\u3092\u4fdd\u6301\n    }\n  end\nend\n\n# \u6539\u5584\u3055\u308c\u305f\u30b3\u30fc\u30c9\nclass ResourceManager\n  def initialize\n    @resources = []\n    resources = @resources  # \u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306b\u30b3\u30d4\u30fc\n    @cleanup_proc = -&gt; {\n      resources.each { |r| r.cleanup }  # \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u3078\u306e\u76f4\u63a5\u53c2\u7167\u3092\u907f\u3051\u308b\n    }\n  end\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u5927\u304d\u306a\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u56de\u907f<\/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\ndef process_large_data\n  large_data = Array.new(10000) { |i| \"\u30c7\u30fc\u30bf#{i}\" }\n  processor = -&gt; { large_data.map(&amp;:upcase) }  # large_data\u304c\u5e38\u306b\u30e1\u30e2\u30ea\u306b\u4fdd\u6301\u3055\u308c\u308b\n  processor\nend\n\n# \u6539\u5584\u3055\u308c\u305f\u30b3\u30fc\u30c9\ndef process_large_data\n  processor = -&gt; (data) { data.map(&amp;:upcase) }  # \u30c7\u30fc\u30bf\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308b\n  large_data = Array.new(10000) { |i| \"\u30c7\u30fc\u30bf#{i}\" }\n  result = processor.call(large_data)\n  large_data = nil  # \u5927\u304d\u306a\u30c7\u30fc\u30bf\u3092GC\u306e\u5bfe\u8c61\u306b\u3059\u308b\n  result\nend<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u30c7\u30d0\u30c3\u30b0\u6642\u306e\u52b9\u679c\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1<\/h3>\n\n\n\n<p>\u30e9\u30e0\u30c0\u5f0f\u306e\u30c7\u30d0\u30c3\u30b0\u306b\u306f\u7279\u6709\u306e\u8ab2\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u52b9\u679c\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e9\u30e0\u30c0\u5f0f\u306e\u8ffd\u8de1<\/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 debug_lambda(lambda_obj, name = \"\u30e9\u30e0\u30c0\")\n  -&gt; (*args) {\n    puts \"#{name} \u547c\u3073\u51fa\u3057\u958b\u59cb: \u5f15\u6570 = #{args.inspect}\"\n    begin\n      result = lambda_obj.call(*args)\n      puts \"#{name} \u6b63\u5e38\u7d42\u4e86: \u7d50\u679c = #{result.inspect}\"\n      result\n    rescue =&gt; e\n      puts \"#{name} \u30a8\u30e9\u30fc\u767a\u751f: #{e.class} - #{e.message}\"\n      raise\n    end\n  }\nend\n\n# \u4f7f\u7528\u4f8b\ncalculator = -&gt;(x, y) { x \/ y }\ndebuggable_calculator = debug_lambda(calculator, \"\u9664\u7b97\u51e6\u7406\")\n\nbegin\n  debuggable_calculator.call(10, 0)\nrescue =&gt; e\n  puts \"\u30a8\u30e9\u30fc\u3092\u30ad\u30e3\u30c3\u30c1: #{e.message}\"\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u72b6\u614b\u306e\u691c\u8a3c<\/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 LambdaDebugger\n  def self.create_debuggable_lambda(original_lambda, options = {})\n    name = options[:name] || \"\u30e9\u30e0\u30c0\"\n    pre_conditions = options[:pre_conditions] || {}\n    post_conditions = options[:post_conditions] || {}\n\n    -&gt; (*args) {\n      # \u4e8b\u524d\u6761\u4ef6\u306e\u30c1\u30a7\u30c3\u30af\n      pre_conditions.each do |var_name, condition|\n        value = args[var_name]\n        unless condition.call(value)\n          raise ArgumentError, \"#{name}: \u5f15\u6570 #{var_name} \u304c\u4e0d\u6b63\u3067\u3059 (\u5024: #{value})\"\n        end\n      }\n\n      result = original_lambda.call(*args)\n\n      # \u4e8b\u5f8c\u6761\u4ef6\u306e\u30c1\u30a7\u30c3\u30af\n      post_conditions.each do |var_name, condition|\n        unless condition.call(result)\n          raise RuntimeError, \"#{name}: \u623b\u308a\u5024\u304c\u4e0d\u6b63\u3067\u3059 (\u5024: #{result})\"\n        end\n      }\n\n      result\n    }\n  end\nend\n\n# \u4f7f\u7528\u4f8b\ndivide = -&gt;(x, y) { x \/ y }\n\ndebuggable_divide = LambdaDebugger.create_debuggable_lambda(\n  divide,\n  name: \"\u9664\u7b97\u51e6\u7406\",\n  pre_conditions: {\n    1 =&gt; -&gt;(y) { y != 0 }  # \u7b2c\u4e8c\u5f15\u6570\u304c0\u3067\u306a\u3044\u3053\u3068\u3092\u30c1\u30a7\u30c3\u30af\n  },\n  post_conditions: {\n    result: -&gt;(r) { r.is_a?(Numeric) }  # \u623b\u308a\u5024\u304c\u6570\u5024\u3067\u3042\u308b\u3053\u3068\u3092\u30c1\u30a7\u30c3\u30af\n  }\n)\n\nbegin\n  debuggable_divide.call(10, 0)\nrescue =&gt; e\n  puts \"\u30c7\u30d0\u30c3\u30b0\u30a8\u30e9\u30fc: #{e.message}\"\nend<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0<\/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 'benchmark'\n\nclass LambdaProfiler\n  def self.profile(lambda_obj, name = \"\u30e9\u30e0\u30c0\")\n    -&gt; (*args) {\n      result = nil\n      time = Benchmark.measure {\n        result = lambda_obj.call(*args)\n      }\n\n      puts \"#{name} \u5b9f\u884c\u6642\u9593:\"\n      puts \"  \u30e6\u30fc\u30b6\u30fcCPU\u6642\u9593: #{time.utime}\u79d2\"\n      puts \"  \u30b7\u30b9\u30c6\u30e0CPU\u6642\u9593: #{time.stime}\u79d2\"\n      puts \"  \u5408\u8a08\u5b9f\u884c\u6642\u9593: #{time.total}\u79d2\"\n\n      result\n    }\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nheavy_process = -&gt; {\n  sleep(1)  # \u91cd\u3044\u51e6\u7406\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\n  \"\u5b8c\u4e86\"\n}\n\nprofiled_process = LambdaProfiler.profile(heavy_process, \"\u91cd\u3044\u51e6\u7406\")\nprofiled_process.call<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u624b\u6cd5\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u3068\u4fdd\u5b88\u6027\u3092\u5927\u304d\u304f\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-1330","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\/1330","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=1330"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1330\/revisions"}],"predecessor-version":[{"id":1331,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1330\/revisions\/1331"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1330"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1330"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1330"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}