{"id":1898,"date":"2025-03-24T08:49:41","date_gmt":"2025-03-23T23:49:41","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1898"},"modified":"2025-03-24T08:49:41","modified_gmt":"2025-03-23T23:49:41","slug":"c%e3%83%86%e3%83%b3%e3%83%97%e3%83%ac%e3%83%bc%e3%83%88%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e5%ae%9f%e8%b7%b5%e3%81%a7%e4%bd%bf%e3%81%88%e3%82%8b7%e3%81%a4%e3%81%ae%e9%87%8d","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1898","title":{"rendered":"C++\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a\u5b9f\u8df5\u3067\u4f7f\u3048\u308b7\u3064\u306e\u91cd\u8981\u6982\u5ff5\u3068\u5177\u4f53\u4f8b"},"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\">C++\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068\u306f\uff1a\u57fa\u790e\u304b\u3089\u7406\u89e3\u3059\u308b\u6c4e\u7528\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u304c\u89e3\u6c7a\u3059\u308b3\u3064\u306e\u958b\u767a\u8ab2\u984c<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">\u306a\u305c\u3044\u307e\u4f01\u696d\u304c\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u91cd\u8996\u3059\u308b\u306e\u304b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u57fa\u672c\u6982\u5ff5\u3068\u5b9f\u88c5\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u95a2\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u5b9a\u7fa9\u3068\u4f7f\u3044\u65b9<\/a>      <\/li>      <li>        <a href=\"#i-5\">\u30af\u30e9\u30b9\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3067\u306e\u578b\u306e\u62bd\u8c61\u5316<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-6\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u7a2e\u985e\u3068\u4f7f\u3044\u5206\u3051<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-7\">\u9ad8\u5ea6\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30c6\u30af\u30cb\u30c3\u30af\u3068\u6d3b\u7528\u30b7\u30fc\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-8\">\u53ef\u5909\u5f15\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-9\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30a8\u30a4\u30ea\u30a2\u30b9\u306b\u3088\u308b\u30b3\u30fc\u30c9\u7c21\u7565\u5316<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-10\">STL\u30b3\u30f3\u30c6\u30ca\u3068\u306e\u9023\u643a\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-11\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-12\">\u3088\u304f\u3042\u308b compile error \u306e\u539f\u56e0\u3068\u89e3\u6c7a\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-13\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u95a2\u9023\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c\u3078\u306e\u5bfe\u51e6<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-14\">\u5b9f\u8df5\u7684\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-15\">CRTP\u30d1\u30bf\u30fc\u30f3\u306b\u3088\u308b\u9759\u7684\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-16\">Policy-based design \u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-17\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-18\">\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-19\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u904e\u5270\u4f7f\u7528\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8<\/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\">C++\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068\u306f\uff1a\u57fa\u790e\u304b\u3089\u7406\u89e3\u3059\u308b\u6c4e\u7528\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/h2>\n\n\n\n<p>C++\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306f\u3001\u578b\u306b\u4f9d\u5b58\u3057\u306a\u3044\u6c4e\u7528\u7684\u306a\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3059\u308b\u305f\u3081\u306e\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3059\u3002\u5358\u4e00\u306e\u30b3\u30fc\u30c9\u3067\u8907\u6570\u306e\u578b\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u67d4\u8edf\u6027\u3092\u63d0\u4f9b\u3057\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u3068\u4fdd\u5b88\u6027\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u304c\u89e3\u6c7a\u3059\u308b3\u3064\u306e\u958b\u767a\u8ab2\u984c<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u306e\u91cd\u8907\u5b9f\u88c5\u306e\u6392\u9664<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f93\u6765\u306e\u65b9\u6cd5\u3067\u306f\u3001\u7570\u306a\u308b\u578b\u3054\u3068\u306b\u540c\u3058\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u30011\u3064\u306e\u5b9f\u88c5\u3067\u8907\u6570\u306e\u578b\u306b\u5bfe\u5fdc\u53ef\u80fd<\/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\u578b\u3054\u3068\u306b\u5b9f\u88c5\u304c\u5fc5\u8981\uff09\n   int max(int a, int b) { return a &gt; b ? a : b; }\n   double max(double a, double b) { return a &gt; b ? a : b; }\n\n   \/\/ \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\uff081\u3064\u306e\u5b9f\u88c5\u3067\u8907\u6570\u306e\u578b\u306b\u5bfe\u5fdc\uff09\n   template&lt;typename T&gt;\n   T max(T a, T b) { return a &gt; b ? a : b; }<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u578b\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u578b\u30c1\u30a7\u30c3\u30af\u306b\u3088\u308a\u3001\u5b9f\u884c\u6642\u30a8\u30e9\u30fc\u3092\u9632\u6b62<\/li>\n\n\n\n<li>\u578b\u306b\u95a2\u3059\u308b\u5236\u7d04\u3092\u660e\u793a\u7684\u306b\u8a18\u8ff0\u53ef\u80fd<\/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=\"\">   template&lt;typename Container&gt;\n   auto sum(const Container&amp; c) -&gt; typename Container::value_type {\n       typename Container::value_type result = {};\n       for (const auto&amp; element : c) {\n           result += element;\n       }\n       return result;\n   }<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u5177\u4f53\u7684\u306a\u578b\u304c\u6c7a\u5b9a\u3055\u308c\u308b\u305f\u3081\u3001\u5b9f\u884c\u6642\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u767a\u751f\u3057\u306a\u3044<\/li>\n\n\n\n<li>\u30a4\u30f3\u30e9\u30a4\u30f3\u5c55\u958b\u306b\u3088\u308b\u6700\u9069\u5316\u306e\u6a5f\u4f1a\u304c\u5897\u52a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u306a\u305c\u3044\u307e\u4f01\u696d\u304c\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u91cd\u8996\u3059\u308b\u306e\u304b<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u958b\u767a\u52b9\u7387\u306e\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u304c\u9ad8\u307e\u308a\u3001\u958b\u767a\u6642\u9593\u3068\u30b3\u30b9\u30c8\u3092\u524a\u6e1b<\/li>\n\n\n\n<li>\u6c4e\u7528\u7684\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u958b\u767a\u304c\u5bb9\u6613\u306b\u306a\u308a\u3001\u793e\u5185\u5171\u901a\u57fa\u76e4\u306e\u6574\u5099\u304c\u9032\u3080<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u54c1\u8cea\u306e\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u30c1\u30a7\u30c3\u30af\u306b\u3088\u308a\u3001\u65e9\u671f\u306e\u30d0\u30b0\u767a\u898b\u304c\u53ef\u80fd<\/li>\n\n\n\n<li>\u578b\u306e\u4e00\u8cab\u6027\u304c\u4fdd\u8a3c\u3055\u308c\u3001\u3088\u308a\u5805\u7262\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u304c\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6700\u65b0\u306eC++\u6a19\u6e96\u3078\u306e\u5bfe\u5fdc<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e2\u30c0\u30f3C++\u3067\u306f\u3001\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u6d3b\u7528\u3057\u305f\u6a5f\u80fd\u304c\u5897\u52a0<\/li>\n\n\n\n<li>STL\u3084\u305d\u306e\u4ed6\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u7406\u89e3\u306b\u4e0d\u53ef\u6b20<\/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=\"\">   \/\/ C++17\u4ee5\u964d\u3067\u5c0e\u5165\u3055\u308c\u305f\u6298\u308a\u7573\u307f\u5f0f\u306e\u4f8b\n   template&lt;typename... Args&gt;\n   auto sum(Args... args) {\n       return (... + args);  \/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u30d1\u30c3\u30af\u306e\u5c55\u958b\n   }<\/pre>\n\n\n\n<p>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306f\u73fe\u4ee3\u306eC++\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u306a\u6a5f\u80fd\u3068\u306a\u3063\u3066\u304a\u308a\u3001\u305d\u306e\u91cd\u8981\u6027\u306f\u5e74\u3005\u5897\u3057\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u5927\u898f\u6a21\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3084\u3001\u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u8981\u6c42\u3055\u308c\u308b\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u9069\u5207\u306a\u6d3b\u7528\u306f\u5927\u304d\u306a\u4fa1\u5024\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u57fa\u672c\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u3088\u308a\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u57fa\u672c\u6982\u5ff5\u3068\u5b9f\u88c5\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u95a2\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u5b9a\u7fa9\u3068\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>\u95a2\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306f\u3001\u578b\u306b\u4f9d\u5b58\u3057\u306a\u3044\u6c4e\u7528\u7684\u306a\u95a2\u6570\u3092\u5b9a\u7fa9\u3059\u308b\u6a5f\u80fd\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u57fa\u672c\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5\u3068\u6d3b\u7528\u4f8b\u3092\u793a\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=\"\">\/\/ \u57fa\u672c\u7684\u306a\u95a2\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u5b9a\u7fa9\ntemplate&lt;typename T&gt;\nT add(T a, T b) {\n    return a + b;\n}\n\n\/\/ \u8907\u6570\u306e\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4f7f\u7528\u3059\u308b\u4f8b\ntemplate&lt;typename T, typename U&gt;\nauto multiply(T a, U b) -&gt; decltype(a * b) {\n    return a * b;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nint main() {\n    \/\/ \u6574\u6570\u3067\u306e\u4f7f\u7528\n    int result1 = add(5, 3);        \/\/ T = int\n    \/\/ \u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3067\u306e\u4f7f\u7528\n    double result2 = add(3.14, 2.0); \/\/ T = double\n    \/\/ \u7570\u306a\u308b\u578b\u3067\u306e\u4e57\u7b97\n    auto result3 = multiply(5, 3.14); \/\/ T = int, U = double\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u30af\u30e9\u30b9\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3067\u306e\u578b\u306e\u62bd\u8c61\u5316<\/h3>\n\n\n\n<p>\u30af\u30e9\u30b9\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u578b\u306b\u4f9d\u5b58\u3057\u306a\u3044\u6c4e\u7528\u7684\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3084\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\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=\"\">\/\/ \u57fa\u672c\u7684\u306a\u30af\u30e9\u30b9\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\ntemplate&lt;typename T&gt;\nclass Stack {\nprivate:\n    std::vector&lt;T&gt; elements;\n\npublic:\n    void push(const T&amp; element) {\n        elements.push_back(element);\n    }\n\n    T pop() {\n        if (elements.empty()) {\n            throw std::runtime_error(\"Stack is empty\");\n        }\n        T top = elements.back();\n        elements.pop_back();\n        return top;\n    }\n\n    bool empty() const {\n        return elements.empty();\n    }\n};\n\n\/\/ \u7279\u6b8a\u5316\u306e\u4f8b\ntemplate&lt;&gt;\nclass Stack&lt;bool&gt; {\n    \/\/ bool\u578b\u306b\u7279\u5316\u3057\u305f\u6700\u9069\u5316\u5b9f\u88c5\n    std::vector&lt;uint8_t&gt; bits;\n    size_t size = 0;\npublic:\n    void push(bool value) {\n        if (size % 8 == 0) {\n            bits.push_back(0);\n        }\n        if (value) {\n            bits[size \/ 8] |= (1 &lt;&lt; (size % 8));\n        }\n        size++;\n    }\n    \/\/ \u4ed6\u306e\u30e1\u30bd\u30c3\u30c9\u3082\u540c\u69d8\u306b\u5b9f\u88c5\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u7a2e\u985e\u3068\u4f7f\u3044\u5206\u3051<\/h3>\n\n\n\n<p>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u306f\u4ee5\u4e0b\u306e\u7a2e\u985e\u304c\u3042\u308a\u3001\u7528\u9014\u306b\u5fdc\u3058\u3066\u9069\u5207\u306b\u9078\u629e\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\uff08typename \/ class\uff09<\/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=\"\">template&lt;typename T&gt;  \/\/ \u307e\u305f\u306f template&lt;class T&gt;\nclass Container {\n    T value;\npublic:\n    void setValue(const T&amp; v) { value = v; }\n    T getValue() const { return value; }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u975e\u578b\u30d1\u30e9\u30e1\u30fc\u30bf<\/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=\"\">\/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u6c7a\u5b9a\u3055\u308c\u308b\u5b9a\u6570\u5024\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u4f7f\u7528\ntemplate&lt;typename T, size_t Size&gt;\nclass FixedArray {\n    T data[Size];\npublic:\n    T&amp; operator[](size_t index) {\n        if (index &gt;= Size) throw std::out_of_range(\"Index out of bounds\");\n        return data[index];\n    }\n    size_t size() const { return Size; }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nFixedArray&lt;int, 5&gt; array;  \/\/ \u8981\u7d20\u65705\u306e\u56fa\u5b9a\u9577\u914d\u5217<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf<\/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=\"\">\/\/ \u30b3\u30f3\u30c6\u30ca\u578b\u81ea\u4f53\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u53d7\u3051\u53d6\u308b\ntemplate&lt;\n    typename T,\n    template&lt;typename, typename&gt; class Container = std::vector\n&gt;\nclass DataStructure {\n    Container&lt;T, std::allocator&lt;T&gt;&gt; data;\npublic:\n    void add(const T&amp; value) {\n        data.push_back(value);\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nDataStructure&lt;int&gt; vec_based;           \/\/ std::vector\u3092\u4f7f\u7528\nDataStructure&lt;int, std::deque&gt; deq_based; \/\/ std::deque\u3092\u4f7f\u7528<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u4f7f\u7528\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u578b\u5236\u7d04\u306e\u6307\u5b9a<\/strong><\/li>\n\n\n\n<li>C++20\u304b\u3089\u306fconcepts\u3092\u4f7f\u7528\u3057\u3066\u578b\u306e\u5236\u7d04\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u53ef\u80fd<\/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=\"\">  template&lt;typename T&gt;\n  requires std::is_arithmetic_v&lt;T&gt;\n  T safe_divide(T a, T b) {\n      if (b == T(0)) throw std::runtime_error(\"Division by zero\");\n      return a \/ b;\n  }<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u6539\u5584<\/strong><\/li>\n\n\n\n<li>static_assert\u3092\u4f7f\u7528\u3057\u3066\u3001\u308f\u304b\u308a\u3084\u3059\u3044\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u63d0\u4f9b<\/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=\"\">  template&lt;typename T&gt;\n  class NumericContainer {\n      static_assert(std::is_arithmetic_v&lt;T&gt;,\n          \"NumericContainer can only store numeric types\");\n      T value;\n  };<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u6982\u5ff5\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u578b\u5b89\u5168\u3067\u518d\u5229\u7528\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u57fa\u672c\u6982\u5ff5\u3092\u5fdc\u7528\u3057\u305f\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">\u9ad8\u5ea6\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30c6\u30af\u30cb\u30c3\u30af\u3068\u6d3b\u7528\u30b7\u30fc\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u53ef\u5909\u5f15\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u6cd5<\/h3>\n\n\n\n<p>\u53ef\u5909\u5f15\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4efb\u610f\u306e\u6570\u306e\u5f15\u6570\u3092\u53d7\u3051\u53d6\u308b\u95a2\u6570\u3084\u30af\u30e9\u30b9\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=\"\">\/\/ \u53ef\u5909\u5f15\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u305fLogger\u5b9f\u88c5\nclass Logger {\npublic:\n    \/\/ \u57fa\u672c\u5f62\uff08\u518d\u5e30\u306e\u7d42\u7aef\uff09\n    template&lt;typename T&gt;\n    void log(const T&amp; value) {\n        std::cout &lt;&lt; value &lt;&lt; std::endl;\n    }\n\n    \/\/ \u53ef\u5909\u5f15\u6570\u7248\n    template&lt;typename First, typename... Rest&gt;\n    void log(const First&amp; first, const Rest&amp;... rest) {\n        std::cout &lt;&lt; first &lt;&lt; \" \";\n        log(rest...);  \/\/ \u6b8b\u308a\u306e\u5f15\u6570\u3092\u518d\u5e30\u7684\u306b\u51e6\u7406\n    }\n\n    \/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u30d1\u30c3\u30af\u306e\u5c55\u958b\u3092\u4f7f\u7528\u3057\u305f\u6700\u9069\u5316\u7248\n    template&lt;typename... Args&gt;\n    void log_optimized(const Args&amp;... args) {\n        (std::cout &lt;&lt; ... &lt;&lt; args) &lt;&lt; std::endl;  \/\/ \u6298\u308a\u7573\u307f\u5f0f\u3092\u4f7f\u7528\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nLogger logger;\nlogger.log(\"User\", 123, \"logged in\", true);  \/\/ \"User 123 logged in true\"<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30a8\u30a4\u30ea\u30a2\u30b9\u306b\u3088\u308b\u30b3\u30fc\u30c9\u7c21\u7565\u5316<\/h3>\n\n\n\n<p>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30a8\u30a4\u30ea\u30a2\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u8907\u96d1\u306a\u578b\u5b9a\u7fa9\u3092\u7c21\u6f54\u306b\u8868\u73fe\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=\"\">\/\/ \u8907\u96d1\u306a\u578b\u5b9a\u7fa9\u306e\u7c21\u7565\u5316\ntemplate&lt;typename T&gt;\nusing SharedPtr = std::shared_ptr&lt;T&gt;;\n\ntemplate&lt;typename K, typename V&gt;\nusing Map = std::map&lt;K, V, std::less&lt;K&gt;, std::allocator&lt;std::pair&lt;const K, V&gt;&gt;&gt;;\n\n\/\/ \u30b3\u30f3\u30c6\u30ca\u306e\u30a8\u30a4\u30ea\u30a2\u30b9\ntemplate&lt;typename T&gt;\nusing Vector = std::vector&lt;T&gt;;\n\n\/\/ \u95a2\u6570\u578b\u306e\u30a8\u30a4\u30ea\u30a2\u30b9\ntemplate&lt;typename Ret, typename... Args&gt;\nusing Function = std::function&lt;Ret(Args...)&gt;;\n\n\/\/ \u5b9f\u969b\u306e\u4f7f\u7528\u4f8b\nclass User {\n    String name;\n    Vector&lt;String&gt; roles;\n    Map&lt;String, SharedPtr&lt;Resource&gt;&gt; resources;\n    Function&lt;void(const String&amp;)&gt; callback;\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">STL\u30b3\u30f3\u30c6\u30ca\u3068\u306e\u9023\u643a\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>STL\u30b3\u30f3\u30c6\u30ca\u3068\u52b9\u679c\u7684\u306b\u9023\u643a\u3059\u308b\u305f\u3081\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\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=\"\">\/\/ \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30f3\u30c6\u30ca\ntemplate&lt;typename T&gt;\nclass CustomAllocator {\npublic:\n    using value_type = T;\n\n    CustomAllocator() noexcept = default;\n\n    template&lt;typename U&gt;\n    CustomAllocator(const CustomAllocator&lt;U&gt;&amp;) noexcept {}\n\n    T* allocate(std::size_t n) {\n        if (n &gt; std::numeric_limits&lt;std::size_t&gt;::max() \/ sizeof(T)) {\n            throw std::bad_alloc();\n        }\n        if (auto p = static_cast&lt;T*&gt;(std::malloc(n * sizeof(T)))) {\n            return p;\n        }\n        throw std::bad_alloc();\n    }\n\n    void deallocate(T* p, std::size_t) noexcept {\n        std::free(p);\n    }\n};\n\n\/\/ \u30ab\u30b9\u30bf\u30e0\u30b3\u30f3\u30c6\u30ca\u306e\u5b9f\u88c5\ntemplate&lt;typename T, template&lt;typename&gt; class Allocator = std::allocator&gt;\nclass RingBuffer {\n    std::vector&lt;T, Allocator&lt;T&gt;&gt; buffer;\n    size_t head = 0;\n    size_t tail = 0;\n    bool full = false;\n\npublic:\n    explicit RingBuffer(size_t size) : buffer(size) {}\n\n    void push(const T&amp; value) {\n        buffer[head] = value;\n        if (full) {\n            tail = (tail + 1) % buffer.size();\n        }\n        head = (head + 1) % buffer.size();\n        full = head == tail;\n    }\n\n    T pop() {\n        if (empty()) {\n            throw std::runtime_error(\"Buffer is empty\");\n        }\n        T value = buffer[tail];\n        full = false;\n        tail = (tail + 1) % buffer.size();\n        return value;\n    }\n\n    bool empty() const {\n        return !full &amp;&amp; (head == tail);\n    }\n\n    bool isFull() const {\n        return full;\n    }\n};\n\n\/\/ \u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u5b9f\u88c5\ntemplate&lt;typename Container&gt;\nclass ContainerIterator {\n    using value_type = typename Container::value_type;\n    using pointer = value_type*;\n    using reference = value_type&amp;;\n\n    Container* container;\n    size_t index;\n\npublic:\n    ContainerIterator(Container* c, size_t i) \n        : container(c), index(i) {}\n\n    reference operator*() {\n        return (*container)[index];\n    }\n\n    ContainerIterator&amp; operator++() {\n        ++index;\n        return *this;\n    }\n\n    bool operator==(const ContainerIterator&amp; other) const {\n        return container == other.container &amp;&amp; index == other.index;\n    }\n\n    bool operator!=(const ContainerIterator&amp; other) const {\n        return !(*this == other);\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3059\u308b\u969b\u306e\u4e3b\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u306e\u63a8\u8ad6\u3068\u5236\u7d04<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C++17\u4ee5\u964d\u306e\u81ea\u52d5\u578b\u63a8\u8ad6\u6a5f\u80fd\u3092\u6d3b\u7528<\/li>\n\n\n\n<li>\u30b3\u30f3\u30bb\u30d7\u30c8\u3092\u4f7f\u7528\u3057\u305f\u578b\u5236\u7d04\u306e\u660e\u793a\u7684\u306a\u6307\u5b9a<\/li>\n\n\n\n<li>SFINAE\u3084\u30bf\u30b0\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u306e\u9069\u5207\u306a\u4f7f\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u6700\u9069\u5316\u6a5f\u4f1a\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u5b9f\u88c5\u306e\u8003\u616e<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9069\u5207\u306a\u62bd\u8c61\u5316\u30ec\u30d9\u30eb\u306e\u9078\u629e<\/li>\n\n\n\n<li>\u547d\u540d\u898f\u5247\u306e\u4e00\u8cab\u6027<\/li>\n\n\n\n<li>\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3068\u30b3\u30e1\u30f3\u30c8\u306e\u5145\u5b9f<\/li>\n<\/ul>\n\n\n\n<p>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-11\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u3088\u304f\u3042\u308b compile error \u306e\u539f\u56e0\u3068\u89e3\u6c7a\u6cd5<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u63a8\u8ad6\u306e\u5931\u6557<\/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=\"\">\/\/ \u30a8\u30e9\u30fc\u306e\u4f8b\ntemplate&lt;typename T&gt;\nvoid process(T value) {\n    value.someMethod();  \/\/ T\u578b\u306bsomeMethod\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306b\u30a8\u30e9\u30fc\n}\n\n\/\/ \u89e3\u6c7a\u7b56\uff1a\u578b\u5236\u7d04\u306e\u8ffd\u52a0\ntemplate&lt;typename T&gt;\nconcept HasSomeMethod = requires(T t) {\n    { t.someMethod() };\n};\n\ntemplate&lt;typename T&gt;\nrequires HasSomeMethod&lt;T&gt;\nvoid process(T value) {\n    value.someMethod();  \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u30c1\u30a7\u30c3\u30af\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u4f9d\u5b58\u578b\u306e\u89e3\u6c7a\u5931\u6557<\/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=\"\">\/\/ \u30a8\u30e9\u30fc\u306e\u4f8b\ntemplate&lt;typename T&gt;\nclass Container {\n    typename T::value_type item;  \/\/ T\u578b\u306bvalue_type\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306b\u30a8\u30e9\u30fc\n};\n\n\/\/ \u89e3\u6c7a\u7b56\uff1a\u578b\u7279\u6027\u306e\u8ffd\u52a0\ntemplate&lt;typename T&gt;\nclass Container {\n    \/\/ type_traits\u306b\u3088\u308b\u578b\u30c1\u30a7\u30c3\u30af\n    static_assert(std::is_class_v&lt;T&gt;, \"T must be a class type\");\n    typename T::value_type item;\n};<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u30df\u30b9\u30de\u30c3\u30c1<\/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\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u8868\u793a\ntemplate&lt;typename T&gt;\nvoid debug_type() {\n    std::cout &lt;&lt; \"Type: \" &lt;&lt; typeid(T).name() &lt;&lt; std::endl;\n    std::cout &lt;&lt; \"Size: \" &lt;&lt; sizeof(T) &lt;&lt; std::endl;\n    std::cout &lt;&lt; \"Alignment: \" &lt;&lt; alignof(T) &lt;&lt; std::endl;\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u95a2\u9023\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c\u3078\u306e\u5bfe\u51e6<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u306e\u6700\u9069\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=\"\">\/\/ \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3092\u5236\u9650\ntemplate&lt;typename T&gt;\nclass PerformanceOptimizedContainer {\nprivate:\n    \/\/ \u7279\u5b9a\u306e\u578b\u306e\u307f\u3092\u30b5\u30dd\u30fc\u30c8\n    static_assert(\n        std::is_same_v&lt;T, int&gt; ||\n        std::is_same_v&lt;T, float&gt; ||\n        std::is_same_v&lt;T, double&gt;,\n        \"Only numeric types are supported\"\n    );\n\n    std::vector&lt;T&gt; data;\n\npublic:\n    \/\/ \u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3092\u4fc3\u9032\n    void add(T value) {\n        if constexpr (std::is_floating_point_v&lt;T&gt;) {\n            \/\/ \u6d6e\u52d5\u5c0f\u6570\u70b9\u578b\u7279\u6709\u306e\u6700\u9069\u5316\n            data.push_back(std::round(value * 100.0) \/ 100.0);\n        } else {\n            \/\/ \u6574\u6570\u578b\u306e\u51e6\u7406\n            data.push_back(value);\n        }\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\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=\"\">\/\/ \u30e1\u30e2\u30ea\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u6700\u9069\u5316\ntemplate&lt;typename T&gt;\nclass OptimizedStorage {\n    \/\/ \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u8abf\u6574\u306b\u3088\u308b\u6700\u9069\u5316\n    alignas(T) std::byte storage[sizeof(T)];\n\npublic:\n    template&lt;typename... Args&gt;\n    void construct(Args&amp;&amp;... args) {\n        new (storage) T(std::forward&lt;Args&gt;(args)...);\n    }\n\n    void destroy() {\n        reinterpret_cast&lt;T*&gt;(storage)-&gt;~T();\n    }\n};<\/pre>\n\n\n\n<p>\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6bb5\u968e\u7684\u306a\u30c7\u30d0\u30c3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5358\u7d14\u306a\u578b\u304b\u3089\u59cb\u3081\u3066\u30c6\u30b9\u30c8<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u578b\u3078\u306e\u6bb5\u968e\u7684\u306a\u79fb\u884c<\/li>\n\n\n\n<li>\u5404\u6bb5\u968e\u3067\u306e\u578b\u60c5\u5831\u306e\u78ba\u8a8d<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30f3\u30d1\u30a4\u30e9\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u89e3\u6790<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e careful \u306a\u8aad\u307f\u53d6\u308a<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u5c65\u6b74\u306e\u78ba\u8a8d<\/li>\n\n\n\n<li>\u578b\u306e\u4e0d\u4e00\u81f4\u7b87\u6240\u306e\u7279\u5b9a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5206\u6790<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9593\u306e\u6e2c\u5b9a<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30d0\u30c3\u30b0\u652f\u63f4\u30c4\u30fc\u30eb<\/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\u60c5\u5831\u51fa\u529b\u7528\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\ntemplate&lt;typename T&gt;\nstruct TypeDebugInfo {\n    static void print() {\n        std::cout &lt;&lt; \"Type properties:\\n\"\n                  &lt;&lt; \"- Name: \" &lt;&lt; typeid(T).name() &lt;&lt; \"\\n\"\n                  &lt;&lt; \"- Size: \" &lt;&lt; sizeof(T) &lt;&lt; \" bytes\\n\"\n                  &lt;&lt; \"- Is POD: \" &lt;&lt; std::is_pod_v&lt;T&gt; &lt;&lt; \"\\n\"\n                  &lt;&lt; \"- Is class: \" &lt;&lt; std::is_class_v&lt;T&gt; &lt;&lt; \"\\n\"\n                  &lt;&lt; \"- Is arithmetic: \" &lt;&lt; std::is_arithmetic_v&lt;T&gt; &lt;&lt; \"\\n\";\n    }\n};<\/pre>\n\n\n\n<p>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30c7\u30d0\u30c3\u30b0\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u8df5\u7684\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-14\">\u5b9f\u8df5\u7684\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">CRTP\u30d1\u30bf\u30fc\u30f3\u306b\u3088\u308b\u9759\u7684\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0<\/h3>\n\n\n\n<p>Curiously Recurring Template Pattern\uff08CRTP\uff09\u306f\u3001\u6d3e\u751f\u30af\u30e9\u30b9\u3092\u57fa\u5e95\u30af\u30e9\u30b9\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3059\u3053\u3068\u3067\u3001\u9759\u7684\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3092\u5b9f\u73fe\u3059\u308b\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\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=\"\">\/\/ CRTP\u306e\u57fa\u672c\u5b9f\u88c5\ntemplate&lt;typename Derived&gt;\nclass Base {\npublic:\n    void interface() {\n        \/\/ \u6d3e\u751f\u30af\u30e9\u30b9\u306e\u5b9f\u88c5\u3092\u9759\u7684\u306b\u547c\u3073\u51fa\u3057\n        static_cast&lt;Derived*&gt;(this)-&gt;implementation();\n    }\n\nprotected:\n    \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5b9f\u88c5\n    void implementation() {\n        std::cout &lt;&lt; \"Default implementation\" &lt;&lt; std::endl;\n    }\n};\n\n\/\/ \u6d3e\u751f\u30af\u30e9\u30b9\u306e\u5b9f\u88c5\nclass Derived : public Base&lt;Derived&gt; {\npublic:\n    void implementation() {\n        std::cout &lt;&lt; \"Derived implementation\" &lt;&lt; std::endl;\n    }\n};\n\n\/\/ CRTP\u3092\u4f7f\u7528\u3057\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30ab\u30a6\u30f3\u30bf\ntemplate&lt;typename T&gt;\nclass ObjectCounter {\n    static inline size_t count = 0;\nprotected:\n    ObjectCounter() { ++count; }\n    ObjectCounter(const ObjectCounter&amp;) { ++count; }\n    ~ObjectCounter() { --count; }\npublic:\n    static size_t getCount() { return count; }\n};\n\n\/\/ \u30ab\u30a6\u30f3\u30bf\u306e\u4f7f\u7528\u4f8b\nclass MyClass : public ObjectCounter&lt;MyClass&gt; {\n    \/\/ \u30af\u30e9\u30b9\u306e\u5b9f\u88c5\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">Policy-based design \u306e\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p>Policy-based design\u306f\u3001\u30af\u30e9\u30b9\u306e\u632f\u308b\u821e\u3044\u3092\u500b\u5225\u306e\u30dd\u30ea\u30b7\u30fc\u30af\u30e9\u30b9\u3068\u3057\u3066\u5206\u96e2\u3057\u3001\u67d4\u8edf\u306a\u7d44\u307f\u5408\u308f\u305b\u3092\u53ef\u80fd\u306b\u3059\u308b\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\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=\"\">\/\/ \u30ed\u30ae\u30f3\u30b0\u30dd\u30ea\u30b7\u30fc\nclass ConsoleLogging {\npublic:\n    template&lt;typename Message&gt;\n    static void log(const Message&amp; msg) {\n        std::cout &lt;&lt; \"Log: \" &lt;&lt; msg &lt;&lt; std::endl;\n    }\n};\n\nclass FileLogging {\n    std::ofstream file;\npublic:\n    FileLogging() : file(\"log.txt\") {}\n\n    template&lt;typename Message&gt;\n    void log(const Message&amp; msg) {\n        file &lt;&lt; \"Log: \" &lt;&lt; msg &lt;&lt; std::endl;\n    }\n};\n\n\/\/ \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u30dd\u30ea\u30b7\u30fc\nclass ThrowingError {\npublic:\n    static void handleError(const std::string&amp; error) {\n        throw std::runtime_error(error);\n    }\n};\n\nclass LoggingError {\npublic:\n    static void handleError(const std::string&amp; error) {\n        std::cerr &lt;&lt; \"Error: \" &lt;&lt; error &lt;&lt; std::endl;\n    }\n};\n\n\/\/ \u30dd\u30ea\u30b7\u30fc\u30d9\u30fc\u30b9\u306e\u30af\u30e9\u30b9\u8a2d\u8a08\ntemplate&lt;\n    typename LoggingPolicy = ConsoleLogging,\n    typename ErrorPolicy = ThrowingError\n&gt;\nclass DataProcessor : private LoggingPolicy, private ErrorPolicy {\npublic:\n    template&lt;typename Data&gt;\n    void process(const Data&amp; data) {\n        try {\n            this-&gt;log(\"Processing data...\");\n            \/\/ \u30c7\u30fc\u30bf\u51e6\u7406\u30ed\u30b8\u30c3\u30af\n            if (\/* \u30a8\u30e9\u30fc\u6761\u4ef6 *\/) {\n                this-&gt;handleError(\"Processing failed\");\n            }\n            this-&gt;log(\"Processing completed\");\n        } catch (const std::exception&amp; e) {\n            this-&gt;handleError(e.what());\n        }\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nusing SafeProcessor = DataProcessor&lt;FileLogging, LoggingError&gt;;\nusing FastProcessor = DataProcessor&lt;ConsoleLogging, ThrowingError&gt;;<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u5b9f\u88c5\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u6700\u9069\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=\"\">\/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30c1\u30a7\u30c3\u30af\ntemplate&lt;typename Policy&gt;\nconcept LoggingPolicyRequirement = requires(Policy p) {\n    { p.log(std::string{}) } -&gt; std::same_as&lt;void&gt;;\n};\n\ntemplate&lt;typename Policy&gt;\nconcept ErrorPolicyRequirement = requires(Policy p) {\n    { p.handleError(std::string{}) } -&gt; std::same_as&lt;void&gt;;\n};\n\n\/\/ \u6539\u826f\u3055\u308c\u305fDataProcessor\ntemplate&lt;\n    typename LoggingPolicy,\n    typename ErrorPolicy\n&gt;\nrequires LoggingPolicyRequirement&lt;LoggingPolicy&gt; &amp;&amp;\n         ErrorPolicyRequirement&lt;ErrorPolicy&gt;\nclass ImprovedDataProcessor {\n    \/\/ \u5b9f\u88c5\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\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=\"\">\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u3055\u308c\u305fCRTP\ntemplate&lt;typename Derived&gt;\nclass OptimizedBase {\npublic:\n    void interface() noexcept {\n        \/\/ final\u4fee\u98fe\u5b50\u306b\u3088\u308b\u6700\u9069\u5316\u306e\u4fc3\u9032\n        static_cast&lt;Derived*&gt;(this)-&gt;implementation();\n    }\n};\n\nclass OptimizedDerived final : public OptimizedBase&lt;OptimizedDerived&gt; {\npublic:\n    void implementation() noexcept {\n        \/\/ \u6700\u9069\u5316\u3055\u308c\u305f\u5b9f\u88c5\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u3092\u6d3b\u7528\u3059\u308b\u969b\u306e\u4e3b\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8a2d\u8a08\u306e\u67d4\u8edf\u6027<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30dd\u30ea\u30b7\u30fc\u306e\u72ec\u7acb\u3057\u305f\u5909\u66f4\u304c\u53ef\u80fd<\/li>\n\n\n\n<li>\u65b0\u3057\u3044\u6a5f\u80fd\u306e\u8ffd\u52a0\u304c\u5bb9\u6613<\/li>\n\n\n\n<li>\u65e2\u5b58\u30b3\u30fc\u30c9\u3078\u306e\u5f71\u97ff\u3092\u6700\u5c0f\u9650\u306b\u6291\u5236<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u8003\u616e<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4eee\u60f3\u95a2\u6570\u306e\u56de\u907f\u306b\u3088\u308b\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30a4\u30f3\u30e9\u30a4\u30f3\u5c55\u958b\u306e\u4fc3\u9032<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u578b\u30c1\u30a7\u30c3\u30af<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8cac\u4efb\u306e\u660e\u78ba\u306a\u5206\u96e2<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u306e\u5bb9\u6613\u3055<\/li>\n\n\n\n<li>\u30c7\u30d0\u30c3\u30b0\u306e\u3057\u3084\u3059\u3055<\/li>\n<\/ul>\n\n\n\n<p>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u3092\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4f7f\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-17\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u547d\u540d\u898f\u5247<\/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=\"\">\/\/ \u826f\u3044\u4f8b\uff1a\u610f\u56f3\u304c\u660e\u78ba\u306a\u547d\u540d\ntemplate&lt;typename ElementType, size_t MaxSize&gt;\nclass Buffer {\n    ElementType elements[MaxSize];\n    \/\/ ...\n};\n\n\/\/ \u60aa\u3044\u4f8b\uff1a\u610f\u56f3\u304c\u4e0d\u660e\u78ba\u306a\u547d\u540d\ntemplate&lt;typename T, size_t N&gt;\nclass Buffer {\n    T e[N];\n    \/\/ ...\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u9069\u5207\u306a\u30b3\u30e1\u30f3\u30c8\u3068\u30c9\u30ad\u30e5\u30e1\u30f3\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=\"\">\/\/ \u826f\u3044\u4f8b\uff1a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u4f7f\u7528\u65b9\u6cd5\u3068\u5236\u7d04\u3092\u660e\u78ba\u306b\u8aac\u660e\n\/\/\/ @brief \u56fa\u5b9a\u30b5\u30a4\u30ba\u306e\u578b\u5b89\u5168\u306a\u30d0\u30c3\u30d5\u30a1\u30af\u30e9\u30b9\n\/\/\/ @tparam ElementType \u8981\u7d20\u306e\u578b\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u5fc5\u9808\uff09\n\/\/\/ @tparam MaxSize \u30d0\u30c3\u30d5\u30a1\u306e\u6700\u5927\u30b5\u30a4\u30ba\ntemplate&lt;typename ElementType, size_t MaxSize&gt;\nclass SafeBuffer {\npublic:\n    static_assert(std::is_default_constructible_v&lt;ElementType&gt;,\n        \"ElementType must be default constructible\");\n    \/\/ ...\n};<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u578b\u5236\u7d04\u306e\u660e\u793a<\/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=\"\">\/\/ \u826f\u3044\u4f8b\uff1a\u578b\u306e\u8981\u4ef6\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\ntemplate&lt;typename Numeric&gt;\nrequires std::is_arithmetic_v&lt;Numeric&gt;\nclass Statistics {\npublic:\n    Numeric average(const std::vector&lt;Numeric&gt;&amp; data) {\n        \/\/ ...\n    }\n};\n\n\/\/ \u3055\u3089\u306b\u826f\u3044\u4f8b\uff1aC++20\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3092\u4f7f\u7528\ntemplate&lt;typename T&gt;\nconcept Sortable = requires(T a, T b) {\n    { a &lt; b } -&gt; std::convertible_to&lt;bool&gt;;\n    { a = b } -&gt; std::same_as&lt;T&amp;&gt;;\n};\n\ntemplate&lt;Sortable T&gt;\nvoid sort(std::vector&lt;T&gt;&amp; data) {\n    \/\/ ...\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u904e\u5270\u4f7f\u7528\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8907\u96d1\u6027\u306e\u8a55\u4fa1<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u304c\u89e3\u6c7a\u3059\u308b\u554f\u984c\u306f\u672c\u5f53\u306b\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u306a\u89e3\u6c7a\u304c\u5fc5\u8981\u304b<\/li>\n\n\n\n<li>\u901a\u5e38\u306e\u7d99\u627f\u3084\u95a2\u6570\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3067\u5341\u5206\u3067\u306f\u306a\u3044\u304b<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u3068\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u5229\u70b9\u306e\u30d0\u30e9\u30f3\u30b9<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff<\/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=\"\">\/\/ \u904e\u5270\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5316\u306e\u4f8b\ntemplate&lt;typename T, typename U, typename V&gt;\nclass OverTemplated {\n    T value1;\n    U value2;\n    V value3;\npublic:\n    \/\/ \u591a\u6570\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u3088\u308a\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9593\u304c\u5897\u52a0\u3057\u3001\u30b3\u30fc\u30c9\u304c\u8907\u96d1\u5316\n};\n\n\/\/ \u9069\u5207\u306a\u8a2d\u8a08\u306e\u4f8b\nclass SimpleYetFlexible {\n    std::variant&lt;int, double, std::string&gt; value;\npublic:\n    \/\/ \u9650\u5b9a\u3055\u308c\u305f\u578b\u306e\u30bb\u30c3\u30c8\u3067\u5341\u5206\u306a\u5834\u5408\u306f\n    \/\/ variant\u3084union\u306e\u4f7f\u7528\u3092\u691c\u8a0e\n};<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u5b9f\u88c5\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[x] \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u610f\u56f3\u304c\u660e\u78ba\u304b<\/li>\n\n\n\n<li>[x] \u578b\u5236\u7d04\u304c\u9069\u5207\u306b\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>[x] \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u7406\u89e3\u3057\u3084\u3059\u3044\u304b<\/li>\n\n\n\n<li>[x] \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9593\u3078\u306e\u5f71\u97ff\u306f\u8a31\u5bb9\u7bc4\u56f2\u304b<\/li>\n\n\n\n<li>[x] \u30c6\u30b9\u30c8\u304c\u5341\u5206\u306b\u30ab\u30d0\u30fc\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u8003\u616e<\/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\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u56f0\u96e3\u306a\u4f8b\ntemplate&lt;typename T, typename U, typename V,\n         template&lt;typename&gt; class Container = std::vector&gt;\nclass HardToMaintain {\n    Container&lt;T&gt; data1;\n    Container&lt;U&gt; data2;\n    Container&lt;V&gt; data3;\n    \/\/ \u8907\u96d1\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u5165\u308c\u5b50\u306b\u3088\u308a\n    \/\/ \u30b3\u30fc\u30c9\u306e\u7406\u89e3\u3068\u4fee\u6b63\u304c\u56f0\u96e3\n};\n\n\/\/ \u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u5bb9\u6613\u306a\u4f8b\ntemplate&lt;typename T&gt;\nclass EasyToMaintain {\n    using DataContainer = std::vector&lt;T&gt;;\n    DataContainer data;\n    \/\/ \u30b7\u30f3\u30d7\u30eb\u306a\u8a2d\u8a08\u306b\u3088\u308a\n    \/\/ \u30b3\u30fc\u30c9\u306e\u7406\u89e3\u3068\u4fee\u6b63\u304c\u5bb9\u6613\n};<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6bb5\u968e\u7684\u306a\u62bd\u8c61\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5177\u4f53\u7684\u306a\u5b9f\u88c5\u304b\u3089\u958b\u59cb<\/li>\n\n\n\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5f90\u3005\u306b\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5316<\/li>\n\n\n\n<li>\u904e\u5ea6\u306a\u4e00\u822c\u5316\u3092\u907f\u3051\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u660e\u78ba\u306a\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u63d0\u4f9b<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u30c1\u30a7\u30c3\u30af\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u9069\u5207\u306a\u578b\u5236\u7d04\u306e\u6307\u5b9a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c9\u30ad\u30e5\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u65b9\u6cd5\u306e\u660e\u78ba\u306a\u8aac\u660e<\/li>\n\n\n\n<li>\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u8981\u4ef6\u306e\u8a18\u8ff0<\/li>\n\n\n\n<li>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306e\u63d0\u4f9b<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u6ce8\u610f\u70b9\u3092\u610f\u8b58\u3059\u308b\u3053\u3068\u3067\u3001\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u3001\u52b9\u7387\u7684\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d9\u30fc\u30b9\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u88c5\u3059\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":[5],"tags":[],"class_list":{"0":"post-1898","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-cpp","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1898","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=1898"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1898\/revisions"}],"predecessor-version":[{"id":1899,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1898\/revisions\/1899"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}