{"id":2057,"date":"2025-03-24T08:48:26","date_gmt":"2025-03-23T23:48:26","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2057"},"modified":"2025-03-24T08:48:51","modified_gmt":"2025-03-23T23:48:51","slug":"%e5%ae%8c%e5%85%a8%e8%a7%a3%e8%aa%ac%ef%bc%81c%e3%81%ae4%e5%a4%a7%e3%82%ad%e3%83%a3%e3%82%b9%e3%83%88%e6%93%8d%e4%bd%9c%e3%81%a8%e5%ae%9f%e8%b7%b5%e3%81%a7%e3%81%ae%e4%bd%bf%e3%81%84%e5%88%86","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2057","title":{"rendered":"\u5b8c\u5168\u89e3\u8aac\uff01C++\u306e4\u5927\u30ad\u30e3\u30b9\u30c8\u64cd\u4f5c\u3068\u5b9f\u8df5\u3067\u306e\u4f7f\u3044\u5206\u3051\u65b9"},"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++\u306e\u30ad\u30e3\u30b9\u30c8\u3068\u306f\u4f55\u304b\uff1f\u305d\u306e\u91cd\u8981\u6027\u3068\u57fa\u790e\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u578b\u5909\u63db\u64cd\u4f5c\u3068\u3057\u3066\u306e\u30ad\u30e3\u30b9\u30c8<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">C\u8a00\u8a9e\u5f62\u5f0f\u306e\u30ad\u30e3\u30b9\u30c8\u306e\u554f\u984c\u70b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">C++\u306e4\u5927\u30ad\u30e3\u30b9\u30c8\u64cd\u4f5c\u3092\u5fb9\u5e95\u89e3\u8aac<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">static_cast\u3067\u5b89\u5168\u306a\u578b\u5909\u63db\u3092\u5b9f\u73fe\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-5\">dynamic_cast\u3067\u30af\u30e9\u30b9\u968e\u5c64\u9593\u306e\u5909\u63db\u3092\u884c\u3046<\/a>      <\/li>      <li>        <a href=\"#i-6\">const_cast\u3067\u4fee\u98fe\u5b50\u3092\u64cd\u4f5c\u3059\u308b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-7\">reinterpret_cast\u3067\u30e1\u30e2\u30ea\u8868\u73fe\u3092\u518d\u89e3\u91c8\u3059\u308b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-8\">\u30ad\u30e3\u30b9\u30c8\u306e\u4f7f\u3044\u5206\u3051\u3068\u5b9f\u8df5\u7684\u306a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-9\">\u5404\u30ad\u30e3\u30b9\u30c8\u306e\u9069\u5207\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/a>      <\/li>      <li>        <a href=\"#i-10\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\u3068\u6700\u9069\u5316<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-11\">\u578b\u5b89\u5168\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">\u3088\u304f\u3042\u308b\u30ad\u30e3\u30b9\u30c8\u306e\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\u3068\u5bfe\u51e6\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">\u5371\u967a\u306a\u30ad\u30e3\u30b9\u30c8\u30d1\u30bf\u30fc\u30f3\u3068\u305d\u306e\u56de\u907f\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">\u30ad\u30e3\u30b9\u30c8\u306b\u95a2\u9023\u3059\u308b\u4e00\u822c\u7684\u306a\u30d0\u30b0\u3068\u89e3\u6c7a\u7b56<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-15\">\u30e2\u30c0\u30f3C++\u306b\u304a\u3051\u308b\u30ad\u30e3\u30b9\u30c8\u306e\u65b0\u3057\u3044\u30a2\u30d7\u30ed\u30fc\u30c1<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-16\">C++17\u4ee5\u964d\u3067\u306e\u578b\u5909\u63db\u306e\u65b0\u6a5f\u80fd<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-17\">\u578b\u5b89\u5168\u306a\u30ad\u30e3\u30b9\u30c8\u3092\u5b9f\u73fe\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/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++\u306e\u30ad\u30e3\u30b9\u30c8\u3068\u306f\u4f55\u304b\uff1f\u305d\u306e\u91cd\u8981\u6027\u3068\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u578b\u5909\u63db\u64cd\u4f5c\u3068\u3057\u3066\u306e\u30ad\u30e3\u30b9\u30c8<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001\u30c7\u30fc\u30bf\u578b\u306e\u5909\u63db\u306f\u975e\u5e38\u306b\u4e00\u822c\u7684\u306a\u64cd\u4f5c\u3067\u3059\u3002C++\u3067\u306f\u3001\u3053\u306e\u578b\u5909\u63db\u3092\u5b9f\u73fe\u3059\u308b\u624b\u6bb5\u3068\u3057\u3066\u300c\u30ad\u30e3\u30b9\u30c8\u300d\u3068\u3044\u3046\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u30ad\u30e3\u30b9\u30c8\u3068\u306f\u3001\u3042\u308b\u30c7\u30fc\u30bf\u578b\u306e\u5024\u3092\u5225\u306e\u30c7\u30fc\u30bf\u578b\u3068\u3057\u3066\u89e3\u91c8\u307e\u305f\u306f\u5909\u63db\u3059\u308b\u64cd\u4f5c\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u30ad\u30e3\u30b9\u30c8\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\uff1a<\/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=\"\">double pi = 3.14159;\nint rounded_pi = static_cast&lt;int&gt;(pi);  \/\/ \u5c0f\u6570\u304b\u3089\u6574\u6570\u3078\u306e\u5909\u63db<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ad\u30e3\u30b9\u30c8\u304c\u91cd\u8981\u3068\u306a\u308b\u4e3b\u306a\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u306e\u4e92\u63db\u6027\u306e\u78ba\u4fdd<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7570\u306a\u308b\u30c7\u30fc\u30bf\u578b\u9593\u3067\u306e\u6f14\u7b97\u3084\u4ee3\u5165\u3092\u53ef\u80fd\u306b\u3059\u308b<\/li>\n\n\n\n<li>API\u306e\u8981\u6c42\u3059\u308b\u578b\u3078\u306e\u9069\u5408<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u64cd\u4f5c\u306e\u5236\u5fa1<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5909\u63db<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u518d\u89e3\u91c8<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306e\u578b\u5909\u63db<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u57fa\u5e95\u30af\u30e9\u30b9\u3068\u6d3e\u751f\u30af\u30e9\u30b9\u9593\u306e\u578b\u5909\u63db<\/li>\n\n\n\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u9593\u306e\u5909\u63db<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">C\u8a00\u8a9e\u5f62\u5f0f\u306e\u30ad\u30e3\u30b9\u30c8\u306e\u554f\u984c\u70b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f62\u5f0f\u3067\u30ad\u30e3\u30b9\u30c8\u3092\u884c\u3063\u3066\u3044\u307e\u3057\u305f\uff1a<\/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=\"\">\/\/ C\u8a00\u8a9e\u5f62\u5f0f\u306e\u30ad\u30e3\u30b9\u30c8\nint* ptr = (int*)malloc(sizeof(int));\ndouble value = (double)42;<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u304b\u3057\u3001\u3053\u306eC\u8a00\u8a9e\u5f62\u5f0f\u306e\u30ad\u30e3\u30b9\u30c8\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u91cd\u5927\u306a\u554f\u984c\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u610f\u56f3\u304c\u4e0d\u660e\u78ba<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ad\u30e3\u30b9\u30c8\u306e\u76ee\u7684\u3084\u7a2e\u985e\u304c\u4e00\u76ee\u3067\u5206\u304b\u3089\u306a\u3044<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u3084\u4fdd\u5b88\u304c\u56f0\u96e3<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u5b89\u5168\u6027\u306e\u6b20\u5982<\/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=\"\">   \/\/ \u5371\u967a\u306a\u30ad\u30e3\u30b9\u30c8\u306e\u4f8b\n   const char* str = \"Hello\";\n   char* mutable_str = (char*)str;  \/\/ const\u306e\u524a\u9664\u304c\u6697\u9ed9\u7684\u306b\u884c\u308f\u308c\u308b<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u306e\u767a\u898b\u304c\u56f0\u96e3<\/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\u304c\u7de9\u3044<\/li>\n\n\n\n<li>\u5b9f\u884c\u6642\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u7279\u5b9a\u304c\u96e3\u3057\u3044<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u3001C++\u3067\u306f4\u3064\u306e\u660e\u793a\u7684\u306a\u30ad\u30e3\u30b9\u30c8\u6f14\u7b97\u5b50\u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>static_cast<\/code><\/li>\n\n\n\n<li><code>dynamic_cast<\/code><\/li>\n\n\n\n<li><code>const_cast<\/code><\/li>\n\n\n\n<li><code>reinterpret_cast<\/code><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u6f14\u7b97\u5b50\u306f\u3001\u30ad\u30e3\u30b9\u30c8\u306e\u610f\u56f3\u3092\u660e\u78ba\u306b\u3057\u3001\u578b\u5b89\u5168\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\uff1a<\/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=\"\">\/\/ \u30e2\u30c0\u30f3\u306aC++\u3067\u306e\u30ad\u30e3\u30b9\u30c8\ndouble pi = 3.14159;\nint rounded_pi = static_cast&lt;int&gt;(pi);  \/\/ \u610f\u56f3\u304c\u660e\u78ba\nvoid* raw_ptr = malloc(sizeof(int));\nint* typed_ptr = static_cast&lt;int*&gt;(raw_ptr);  \/\/ \u578b\u5b89\u5168\u306a\u5909\u63db<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306a\u660e\u793a\u7684\u306a\u30ad\u30e3\u30b9\u30c8\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30c9\u306e\u610f\u56f3\u304c\u660e\u78ba\u306b\u306a\u308b<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u304c\u5f37\u5316\u3055\u308c\u308b<\/li>\n\n\n\n<li>\u4fdd\u5b88\u6027\u304c\u5411\u4e0a\u3059\u308b<\/li>\n\n\n\n<li>\u30d0\u30b0\u306e\u65e9\u671f\u767a\u898b\u304c\u53ef\u80fd\u306b\u306a\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e4\u3064\u306e\u30ad\u30e3\u30b9\u30c8\u6f14\u7b97\u5b50\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">C++\u306e4\u5927\u30ad\u30e3\u30b9\u30c8\u64cd\u4f5c\u3092\u5fb9\u5e95\u89e3\u8aac<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">static_cast\u3067\u5b89\u5168\u306a\u578b\u5909\u63db\u3092\u5b9f\u73fe\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>static_cast<\/code>\u306f\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u578b\u5909\u63db\u6f14\u7b97\u5b50\u3067\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u578b\u30c1\u30a7\u30c3\u30af\u304c\u884c\u308f\u308c\u308b\u5b89\u5168\u306a\u5909\u63db\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u306a\u7528\u9014\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6570\u5024\u578b\u9593\u306e\u5909\u63db<\/li>\n\n\n\n<li>\u30dd\u30a4\u30f3\u30bf\u306e\u4e0a\u65b9\u5909\u63db\uff08\u6d3e\u751f\u30af\u30e9\u30b9\u2192\u57fa\u5e95\u30af\u30e9\u30b9\uff09<\/li>\n\n\n\n<li>void*\u304b\u3089\u306e\u578b\u5909\u63db<\/li>\n\n\n\n<li>\u5217\u6319\u578b\u3068\u6574\u6570\u578b\u306e\u5909\u63db<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6570\u5024\u578b\u9593\u306e\u5909\u63db\ndouble pi = 3.14159;\nint rounded = static_cast&lt;int&gt;(pi);  \/\/ 3\u304c\u683c\u7d0d\u3055\u308c\u308b\n\n\/\/ \u30af\u30e9\u30b9\u968e\u5c64\u3067\u306e\u4f7f\u7528\u4f8b\nclass Base {};\nclass Derived : public Base {};\n\nDerived* d = new Derived();\nBase* b = static_cast&lt;Base*&gt;(d);     \/\/ \u4e0a\u65b9\u5909\u63db\uff1a\u5b89\u5168<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">dynamic_cast\u3067\u30af\u30e9\u30b9\u968e\u5c64\u9593\u306e\u5909\u63db\u3092\u884c\u3046<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>dynamic_cast<\/code>\u306f\u5b9f\u884c\u6642\u306e\u578b\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3044\u3001\u4e3b\u306b\u30af\u30e9\u30b9\u968e\u5c64\u9593\u3067\u306e\u5b89\u5168\u306a\u4e0b\u65b9\u5909\u63db\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u5fb4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9f\u884c\u6642\u578b\u60c5\u5831\uff08RTTI\uff09\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u5931\u6557\u6642\u306bnullptr\u307e\u305f\u306f\u4f8b\u5916\u3092\u8fd4\u3059<\/li>\n\n\n\n<li>\u4eee\u60f3\u95a2\u6570\u3092\u6301\u3064\u30af\u30e9\u30b9\u3067\u306e\u307f\u4f7f\u7528\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=\"\">class Base {\n    virtual ~Base() {}  \/\/ \u4eee\u60f3\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u5fc5\u8981\n};\nclass Derived : public Base {\n    void specificMethod() {}\n};\n\nvoid processObject(Base* ptr) {\n    \/\/ \u5b89\u5168\u306a\u4e0b\u65b9\u5909\u63db\n    if (Derived* derived = dynamic_cast&lt;Derived*&gt;(ptr)) {\n        derived-&gt;specificMethod();\n    } else {\n        \/\/ \u5909\u63db\u5931\u6557\u6642\u306e\u51e6\u7406\n        std::cout &lt;&lt; \"\u5909\u63db\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\" &lt;&lt; std::endl;\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">const_cast\u3067\u4fee\u98fe\u5b50\u3092\u64cd\u4f5c\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>const_cast<\/code>\u306f\u3001const\u3084volatile\u4fee\u98fe\u5b50\u3092\u9664\u53bb\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ef\u80fd\u306a\u9650\u308a\u4f7f\u7528\u3092\u907f\u3051\u308b<\/li>\n\n\n\n<li>\u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u3068\u306e\u7d71\u5408\u6642\u306b\u306e\u307f\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u63a8\u5968<\/li>\n\n\n\n<li>const\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5909\u66f4\u306f\u672a\u5b9a\u7fa9\u52d5\u4f5c<\/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=\"\">void legacy_function(char* str) {\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406\n}\n\nvoid modern_function(const char* const_str) {\n    \/\/ \u30ec\u30ac\u30b7\u30fc\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\n    char* mutable_str = const_cast&lt;char*&gt;(const_str);\n    legacy_function(mutable_str);\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">reinterpret_cast\u3067\u30e1\u30e2\u30ea\u8868\u73fe\u3092\u518d\u89e3\u91c8\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>reinterpret_cast<\/code>\u306f\u6700\u3082\u5371\u967a\u306a\u578b\u5909\u63db\u6f14\u7b97\u5b50\u3067\u3001\u30d3\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u306e\u76f4\u63a5\u7684\u306a\u518d\u89e3\u91c8\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u306a\u7528\u9014\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30dd\u30a4\u30f3\u30bf\u3068\u6574\u6570\u578b\u306e\u76f8\u4e92\u5909\u63db<\/li>\n\n\n\n<li>\u7570\u306a\u308b\u30dd\u30a4\u30f3\u30bf\u578b\u9593\u306e\u5909\u63db<\/li>\n\n\n\n<li>\u4f4e\u30ec\u30d9\u30eb\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30b0\u30e9\u30df\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=\"\">\/\/ \u30dd\u30a4\u30f3\u30bf\u3068integer\u9593\u306e\u5909\u63db\nint* ptr = new int(42);\nuintptr_t addr = reinterpret_cast&lt;uintptr_t&gt;(ptr);\nint* recovered = reinterpret_cast&lt;int*&gt;(addr);\n\n\/\/ \u7570\u306a\u308b\u30dd\u30a4\u30f3\u30bf\u578b\u9593\u306e\u5909\u63db\uff08\u5371\u967a\u306a\u4f8b\uff09\nstruct Data { int x; };\nData* data = new Data{42};\nchar* raw = reinterpret_cast&lt;char*&gt;(data);  \/\/ \u30e1\u30e2\u30ea\u306e\u76f4\u63a5\u64cd\u4f5c<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528\u6642\u306e\u6ce8\u610f\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u8981\u4ef6\u306e\u9055\u53cd\u306b\u6ce8\u610f<\/li>\n\n\n\n<li>\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u4f9d\u5b58\u306e\u554f\u984c\u306b\u6ce8\u610f<\/li>\n\n\n\n<li>\u578b\u306e\u6574\u5408\u6027\u306f\u958b\u767a\u8005\u306e\u8cac\u4efb<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u30ad\u30e3\u30b9\u30c8\u306e\u7279\u5fb4\u6bd4\u8f03\uff1a<\/p>\n\n\n<div id=\"id-465067ea-6bfb-4289-a142-4189b06a0ae0\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30ad\u30e3\u30b9\u30c8\u6f14\u7b97\u5b50<\/th><th>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u30c1\u30a7\u30c3\u30af<\/th><th>\u5b9f\u884c\u6642\u30c1\u30a7\u30c3\u30af<\/th><th>\u4e3b\u306a\u7528\u9014<\/th><th>\u5b89\u5168\u6027<\/th><\/tr><\/thead><tbody><tr><td>static_cast<\/td><td>\u3042\u308a<\/td><td>\u306a\u3057<\/td><td>\u57fa\u672c\u7684\u306a\u578b\u5909\u63db<\/td><td>\u4e2d<\/td><\/tr><tr><td>dynamic_cast<\/td><td>\u3042\u308a<\/td><td>\u3042\u308a<\/td><td>\u30af\u30e9\u30b9\u968e\u5c64\u9593\u306e\u5909\u63db<\/td><td>\u9ad8<\/td><\/tr><tr><td>const_cast<\/td><td>\u3042\u308a<\/td><td>\u306a\u3057<\/td><td>const\u4fee\u98fe\u5b50\u306e\u9664\u53bb<\/td><td>\u4f4e<\/td><\/tr><tr><td>reinterpret_cast<\/td><td>\u6700\u5c0f\u9650<\/td><td>\u306a\u3057<\/td><td>\u30d3\u30c3\u30c8\u5217\u306e\u518d\u89e3\u91c8<\/td><td>\u6700\u4f4e<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u30ad\u30e3\u30b9\u30c8\u6f14\u7b97\u5b50\u3092\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u578b\u5b89\u5168\u6027\u306e\u9ad8\u3044\u5805\u7262\u306aC++\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-8\">\u30ad\u30e3\u30b9\u30c8\u306e\u4f7f\u3044\u5206\u3051\u3068\u5b9f\u8df5\u7684\u306a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u5404\u30ad\u30e3\u30b9\u30c8\u306e\u9069\u5207\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u8df5\u7684\u306a\u958b\u767a\u3067\u306f\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u30ad\u30e3\u30b9\u30c8\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u5404\u30ad\u30e3\u30b9\u30c8\u306e\u6700\u9069\u306a\u4f7f\u7528\u30b7\u30fc\u30f3\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. static_cast\u306e\u9069\u5207\u306a\u4f7f\u7528\u30b7\u30fc\u30f3<\/strong><\/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=\"\">\/\/ 1. \u6570\u5024\u578b\u9593\u306e\u5909\u63db\ndouble price = 99.99;\nint rounded_price = static_cast&lt;int&gt;(price);\n\n\/\/ 2. \u660e\u793a\u7684\u306a\u4e0a\u65b9\u5909\u63db\uff08\u30a2\u30c3\u30d7\u30ad\u30e3\u30b9\u30c8\uff09\nclass Animal { \/*...*\/ };\nclass Dog : public Animal { \/*...*\/ };\nDog* dog = new Dog();\nAnimal* animal = static_cast&lt;Animal*&gt;(dog);  \/\/ \u660e\u793a\u7684\u306a\u4e0a\u65b9\u5909\u63db\n\n\/\/ 3. void*\u304b\u3089\u306e\u578b\u5909\u63db\nvoid* raw_memory = malloc(sizeof(int));\nint* typed_ptr = static_cast&lt;int*&gt;(raw_memory);<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. dynamic_cast\u306e\u9069\u5207\u306a\u4f7f\u7528\u30b7\u30fc\u30f3<\/strong><\/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 Base {\n    virtual ~Base() {}\n};\nclass Derived1 : public Base {\n    void specific_method() {}\n};\nclass Derived2 : public Base {\n    void other_method() {}\n};\n\nvoid process_object(Base* ptr) {\n    \/\/ 1. \u578b\u306e\u5b89\u5168\u306a\u8b58\u5225\u3068\u5909\u63db\n    if (auto* d1 = dynamic_cast&lt;Derived1*&gt;(ptr)) {\n        d1-&gt;specific_method();\n    }\n    \/\/ 2. \u8907\u6570\u306e\u578b\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\n    else if (auto* d2 = dynamic_cast&lt;Derived2*&gt;(ptr)) {\n        d2-&gt;other_method();\n    }\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. const_cast\u306e\u9650\u5b9a\u7684\u306a\u4f7f\u7528\u30b7\u30fc\u30f3<\/strong><\/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=\"\">\/\/ \u30ec\u30ac\u30b7\u30fcAPI\u3068\u306e\u9023\u643a\nextern \"C\" void c_api_function(char* buffer);\n\nvoid modern_wrapper(const std::string&amp; data) {\n    char* mutable_buffer = const_cast&lt;char*&gt;(data.c_str());\n    c_api_function(mutable_buffer);\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. reinterpret_cast\u306e\u7279\u6b8a\u306a\u4f7f\u7528\u30b7\u30fc\u30f3<\/strong><\/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=\"\">\/\/ \u30c7\u30d0\u30a4\u30b9\u30c9\u30e9\u30a4\u30d0\u3067\u306e\u30e1\u30e2\u30ea\u30de\u30c3\u30d4\u30f3\u30b0\nstruct DeviceRegisters {\n    uint32_t control;\n    uint32_t status;\n};\n\nuintptr_t device_address = 0x1000;\nDeviceRegisters* registers = \n    reinterpret_cast&lt;DeviceRegisters*&gt;(device_address);<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\u3068\u6700\u9069\u5316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ad\u30e3\u30b9\u30c8\u306e\u9078\u629e\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n<div id=\"id-966dfb28-5ae7-4f0a-9bcb-a8d55098ba2a\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30ad\u30e3\u30b9\u30c8\u7a2e\u985e<\/th><th>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u30b3\u30b9\u30c8<\/th><th>\u5b9f\u884c\u6642\u30b3\u30b9\u30c8<\/th><th>\u30e1\u30e2\u30ea\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/th><\/tr><\/thead><tbody><tr><td>static_cast<\/td><td>\u4f4e<\/td><td>\u306a\u3057<\/td><td>\u306a\u3057<\/td><\/tr><tr><td>dynamic_cast<\/td><td>\u4f4e<\/td><td>\u9ad8<\/td><td>RTTI\u60c5\u5831\u5206<\/td><\/tr><tr><td>const_cast<\/td><td>\u4f4e<\/td><td>\u306a\u3057<\/td><td>\u306a\u3057<\/td><\/tr><tr><td>reinterpret_cast<\/td><td>\u4f4e<\/td><td>\u306a\u3057<\/td><td>\u306a\u3057<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u305f\u3081\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>dynamic_cast\u306e\u4f7f\u7528\u3092\u6700\u5c0f\u9650\u306b<\/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=\"\">   \/\/ \u975e\u52b9\u7387\u306a\u5b9f\u88c5\n   void process_all(std::vector&lt;Base*&gt;&amp; objects) {\n       for (auto* obj : objects) {\n           if (auto* derived = dynamic_cast&lt;Derived*&gt;(obj)) {\n               \/\/ \u51e6\u7406\n           }\n       }\n   }\n\n   \/\/ \u6700\u9069\u5316\u3055\u308c\u305f\u5b9f\u88c5\n   class Base {\n       virtual void process() = 0;\n   };\n   void process_all(std::vector&lt;Base*&gt;&amp; objects) {\n       for (auto* obj : objects) {\n           obj-&gt;process();  \/\/ \u4eee\u60f3\u95a2\u6570\u3092\u4f7f\u7528\n       }\n   }<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u4e0d\u5fc5\u8981\u306a\u30ad\u30e3\u30b9\u30c8\u306e\u6392\u9664<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ \u60aa\u3044\u4f8b\n   int value = static_cast&lt;int&gt;(42);  \/\/ \u4e0d\u5fc5\u8981\u306a\u30ad\u30e3\u30b9\u30c8\n\n   \/\/ \u826f\u3044\u4f8b\n   int value = 42;  \/\/ \u6697\u9ed9\u306e\u578b\u5909\u63db\u3067\u5341\u5206<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u578b\u5b89\u5168\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8a2d\u8a08\u6bb5\u968e\u3067\u306e\u8003\u616e<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30af\u30e9\u30b9\u968e\u5c64\u3092\u9069\u5207\u306b\u8a2d\u8a08\u3057\u3001\u4e0d\u5fc5\u8981\u306a\u30ad\u30e3\u30b9\u30c8\u3092\u907f\u3051\u308b<\/li>\n\n\n\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u578b\u5b89\u5168\u306b\u8a2d\u8a08\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5b89\u5168\u6027\u306e\u305f\u3081\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ 1. \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u6d3b\u7528\n   std::shared_ptr&lt;Base&gt; base = std::make_shared&lt;Derived&gt;();\n   if (auto derived = std::dynamic_pointer_cast&lt;Derived&gt;(base)) {\n       \/\/ \u5b89\u5168\u306a\u51e6\u7406\n   }\n\n   \/\/ 2. \u4f8b\u5916\u5b89\u5168\u6027\u306e\u78ba\u4fdd\n   try {\n       Derived&amp; derived = dynamic_cast&lt;Derived&amp;&gt;(base_ref);\n   } catch (const std::bad_cast&amp; e) {\n       \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n   }<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u578b\u5909\u63db\u306e\u5fc5\u8981\u6027\u3092\u6e1b\u3089\u3059\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ \u30d3\u30b8\u30bf\u30fc\u30d1\u30bf\u30fc\u30f3\u306e\u6d3b\u7528\u4f8b\n   class Visitor {\n   public:\n       virtual void visit(Derived1*) = 0;\n       virtual void visit(Derived2*) = 0;\n   };\n\n   class Base {\n   public:\n       virtual void accept(Visitor* v) = 0;\n   };<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3046\u3053\u3068\u3067\u3001\u578b\u5b89\u5168\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-12\">\u3088\u304f\u3042\u308b\u30ad\u30e3\u30b9\u30c8\u306e\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\u3068\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u5371\u967a\u306a\u30ad\u30e3\u30b9\u30c8\u30d1\u30bf\u30fc\u30f3\u3068\u305d\u306e\u56de\u907f\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ad\u30e3\u30b9\u30c8\u306f\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3059\u304c\u3001\u8aa4\u7528\u3059\u308b\u3068\u6df1\u523b\u306a\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4ee3\u8868\u7684\u306a\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\u3068\u305d\u306e\u5bfe\u51e6\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. \u578b\u5b89\u5168\u6027\u3092\u7121\u8996\u3057\u305f\u5371\u967a\u306a\u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8<\/strong><\/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=\"\">\/\/ \u5371\u967a\u306a\u30b3\u30fc\u30c9\nclass Base { \/*...*\/ };\nclass Derived : public Base { \/*...*\/ };\n\nBase* base = new Base();\nDerived* derived = static_cast&lt;Derived*&gt;(base);  \/\/ \u672a\u5b9a\u7fa9\u52d5\u4f5c\uff01\n\n\/\/ \u5b89\u5168\u306a\u5b9f\u88c5\nBase* base = new Base();\nif (Derived* derived = dynamic_cast&lt;Derived*&gt;(base)) {\n    \/\/ \u5909\u63db\u6210\u529f\u6642\u306e\u51e6\u7406\n} else {\n    \/\/ \u5909\u63db\u5931\u6557\u6642\u306e\u9069\u5207\u306a\u51e6\u7406\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. const_cast\u306e\u904e\u5270\u306a\u4f7f\u7528<\/strong><\/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=\"\">\/\/ \u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\nvoid process_data(const std::string&amp; data) {\n    std::string&amp; mutable_data = \n        const_cast&lt;std::string&amp;&gt;(data);  \/\/ const\u306e\u610f\u56f3\u3092\u7834\u58ca\n    mutable_data += \"modified\";  \/\/ \u5371\u967a\u306a\u5909\u66f4\n}\n\n\/\/ \u9069\u5207\u306a\u5b9f\u88c5\nvoid process_data(const std::string&amp; data) {\n    std::string result = data;  \/\/ \u65b0\u3057\u3044\u30b3\u30d4\u30fc\u3092\u4f5c\u6210\n    result += \"modified\";  \/\/ \u5b89\u5168\u306a\u5909\u66f4\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. \u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3092\u7121\u8996\u3057\u305freinterpret_cast<\/strong><\/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=\"\">\/\/ \u5371\u967a\u306a\u30b3\u30fc\u30c9\nstruct A { int x; };\nstruct B { double y; };\n\nA* a = new A{42};\nB* b = reinterpret_cast&lt;B*&gt;(a);  \/\/ \u578b\u306e\u4e0d\u4e00\u81f4\uff01\n\n\/\/ \u5b89\u5168\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\n\/\/ \u660e\u793a\u7684\u306a\u5909\u63db\u95a2\u6570\u3092\u4f7f\u7528\nstruct A {\n    int x;\n    B to_B() const {\n        return B{static_cast&lt;double&gt;(x)};\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30ad\u30e3\u30b9\u30c8\u306b\u95a2\u9023\u3059\u308b\u4e00\u822c\u7684\u306a\u30d0\u30b0\u3068\u89e3\u6c7a\u7b56<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u5f15\u304d\u8d77\u3053\u3059\u30ad\u30e3\u30b9\u30c8<\/strong><\/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=\"\">\/\/ \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\nBase* create_object() {\n    Derived* d = new Derived();\n    return static_cast&lt;Base*&gt;(d);  \/\/ \u6240\u6709\u6a29\u304c\u4e0d\u660e\u78ba\n}\n\n\/\/ \u89e3\u6c7a\u7b56\uff1a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\nstd::unique_ptr&lt;Base&gt; create_object() {\n    return std::make_unique&lt;Derived&gt;();\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. \u578b\u306e\u4e0d\u4e00\u81f4\u306b\u3088\u308b\u672a\u5b9a\u7fa9\u52d5\u4f5c<\/strong><\/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=\"\">\/\/ \u5371\u967a\u306a\u30d1\u30bf\u30fc\u30f3\nvoid* raw_memory = malloc(sizeof(int));\ndouble* dp = static_cast&lt;double*&gt;(raw_memory);  \/\/ \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u9055\u53cd\u306e\u53ef\u80fd\u6027\n\n\/\/ \u5b89\u5168\u306a\u5b9f\u88c5\nvoid* raw_memory = malloc(sizeof(double));\ndouble* dp = static_cast&lt;double*&gt;(raw_memory);\nalignas(double) char buffer[sizeof(double)];  \/\/ \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u4fdd\u8a3c<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. \u591a\u91cd\u7d99\u627f\u3067\u306e\u8aa4\u3063\u305f\u30ad\u30e3\u30b9\u30c8<\/strong><\/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=\"\">\/\/ \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\nclass A { \/*...*\/ };\nclass B { \/*...*\/ };\nclass C : public A, public B { \/*...*\/ };\n\nC* c = new C();\nA* a = static_cast&lt;A*&gt;(c);\nB* b = reinterpret_cast&lt;B*&gt;(a);  \/\/ \u6df1\u523b\u306a\u8aa4\u308a\uff01\n\n\/\/ \u6b63\u3057\u3044\u5b9f\u88c5\nC* c = new C();\nA* a = static_cast&lt;A*&gt;(c);\nB* b = dynamic_cast&lt;B*&gt;(c);  \/\/ \u5b89\u5168\u306a\u5909\u63db<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3088\u304f\u3042\u308b\u554f\u984c\u3092\u9632\u3050\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u5b89\u5168\u6027\u306e\u78ba\u8a8d<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>dynamic_cast\u306e\u4f7f\u7528\u3092\u691c\u8a0e\u3059\u308b<\/li>\n\n\n\n<li>\u578b\u5909\u63db\u306e\u5fc5\u8981\u6027\u3092\u518d\u691c\u8a0e\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u8981\u4ef6\u306e\u78ba\u8a8d<\/li>\n\n\n\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u6240\u6709\u6a29\u306e\u660e\u78ba\u5316<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4fdd\u5b88\u6027\u306e\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ad\u30e3\u30b9\u30c8\u306e\u7406\u7531\u3092\u30b3\u30e1\u30f3\u30c8\u3067\u660e\u8a18<\/li>\n\n\n\n<li>\u578b\u5909\u63db\u30ed\u30b8\u30c3\u30af\u306e\u30ab\u30d7\u30bb\u30eb\u5316<\/li>\n\n\n\n<li>\u5358\u4f53\u30c6\u30b9\u30c8\u3067\u306e\u5909\u63db\u306e\u691c\u8a3c<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4ee3\u66ff\u624b\u6bb5\u306e\u691c\u8a0e<\/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=\"\">   \/\/ \u30ad\u30e3\u30b9\u30c8\u3092\u4f7f\u7528\u3059\u308b\u4ee3\u308f\u308a\u306b\n   class Shape {\n   public:\n       virtual double area() = 0;\n       virtual ~Shape() = default;\n   };\n\n   class Circle : public Shape {\n   public:\n       double area() override { \/*...*\/ }\n   };<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\u3092\u8a8d\u8b58\u3057\u3001\u9069\u5207\u306a\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">\u30e2\u30c0\u30f3C++\u306b\u304a\u3051\u308b\u30ad\u30e3\u30b9\u30c8\u306e\u65b0\u3057\u3044\u30a2\u30d7\u30ed\u30fc\u30c1<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">C++17\u4ee5\u964d\u3067\u306e\u578b\u5909\u63db\u306e\u65b0\u6a5f\u80fd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e2\u30c0\u30f3C++\u3067\u306f\u3001\u3088\u308a\u5b89\u5168\u3067\u8868\u73fe\u529b\u8c4a\u304b\u306a\u578b\u5909\u63db\u306e\u624b\u6cd5\u304c\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. std::any_cast\u306e\u6d3b\u7528<\/strong><\/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=\"\">#include &lt;any&gt;\n\nstd::any value = 42;\ntry {\n    int n = std::any_cast&lt;int&gt;(value);  \/\/ \u5b89\u5168\u306a\u578b\u5909\u63db\n    std::cout &lt;&lt; \"\u5024: \" &lt;&lt; n &lt;&lt; std::endl;\n} catch (const std::bad_any_cast&amp; e) {\n    std::cerr &lt;&lt; \"\u578b\u5909\u63db\u30a8\u30e9\u30fc: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. std::variant\u3092\u4f7f\u7528\u3057\u305f\u578b\u5b89\u5168\u306a\u591a\u614b\u6027<\/strong><\/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=\"\">#include &lt;variant&gt;\n\n\/\/ \u8907\u6570\u306e\u578b\u3092\u5b89\u5168\u306b\u6271\u3046\nstd::variant&lt;int, double, std::string&gt; var = \"Hello\";\n\n\/\/ \u8a2a\u554f\u8005\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u305f\u578b\u5b89\u5168\u306a\u51e6\u7406\nstd::visit([](auto&amp;&amp; arg) {\n    using T = std::decay_t&lt;decltype(arg)&gt;;\n    if constexpr (std::is_same_v&lt;T, int&gt;)\n        std::cout &lt;&lt; \"\u6574\u6570: \" &lt;&lt; arg &lt;&lt; std::endl;\n    else if constexpr (std::is_same_v&lt;T, double&gt;)\n        std::cout &lt;&lt; \"\u6d6e\u52d5\u5c0f\u6570\u70b9: \" &lt;&lt; arg &lt;&lt; std::endl;\n    else if constexpr (std::is_same_v&lt;T, std::string&gt;)\n        std::cout &lt;&lt; \"\u6587\u5b57\u5217: \" &lt;&lt; arg &lt;&lt; std::endl;\n}, var);<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. std::optional\u3092\u4f7f\u7528\u3057\u305fnull\u30c1\u30a7\u30c3\u30af\u306e\u56de\u907f<\/strong><\/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=\"\">#include &lt;optional&gt;\n\nstd::optional&lt;int&gt; try_parse(const std::string&amp; str) {\n    try {\n        return std::stoi(str);\n    } catch (...) {\n        return std::nullopt;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nif (auto value = try_parse(\"42\")) {\n    std::cout &lt;&lt; \"\u30d1\u30fc\u30b9\u6210\u529f: \" &lt;&lt; *value &lt;&lt; std::endl;\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u578b\u5b89\u5168\u306a\u30ad\u30e3\u30b9\u30c8\u3092\u5b9f\u73fe\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u6d3b\u7528\u3057\u305f\u5b89\u5168\u306a\u578b\u5909\u63db<\/strong><\/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=\"\">template&lt;typename To, typename From&gt;\nstd::optional&lt;To&gt; safe_cast(const From&amp; value) {\n    try {\n        if constexpr (std::is_constructible_v&lt;To, From&gt;) {\n            return To(value);\n        } else if constexpr (std::is_convertible_v&lt;From, To&gt;) {\n            return static_cast&lt;To&gt;(value);\n        }\n    } catch (...) {}\n    return std::nullopt;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nauto result = safe_cast&lt;int&gt;(3.14);\nif (result) {\n    std::cout &lt;&lt; \"\u5909\u63db\u6210\u529f: \" &lt;&lt; *result &lt;&lt; std::endl;\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. CRTP\uff08Curiously Recurring Template Pattern\uff09\u3092\u4f7f\u7528\u3057\u305f\u9759\u7684\u591a\u614b\u6027<\/strong><\/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=\"\">template&lt;typename Derived&gt;\nclass Base {\npublic:\n    void interface() {\n        static_cast&lt;Derived*&gt;(this)-&gt;implementation();\n    }\nprotected:\n    ~Base() = default;\n};\n\nclass Derived : public Base&lt;Derived&gt; {\npublic:\n    void implementation() {\n        \/\/ \u5b9f\u88c5\n    }\n};<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. \u30b3\u30f3\u30bb\u30d7\u30c8\u3092\u6d3b\u7528\u3057\u305f\u578b\u5236\u7d04<\/strong><\/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=\"\">#include &lt;concepts&gt;\n\ntemplate&lt;typename T&gt;\nconcept Numeric = std::is_arithmetic_v&lt;T&gt;;\n\ntemplate&lt;Numeric T, Numeric U&gt;\nauto safe_numeric_cast(U value) {\n    if constexpr (sizeof(T) &gt;= sizeof(U)) {\n        return static_cast&lt;T&gt;(value);\n    } else {\n        if (value &gt; std::numeric_limits&lt;T&gt;::max() ||\n            value &lt; std::numeric_limits&lt;T&gt;::min()) {\n            throw std::overflow_error(\"\u6570\u5024\u304c\u7bc4\u56f2\u5916\u3067\u3059\");\n        }\n        return static_cast&lt;T&gt;(value);\n    }\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e2\u30c0\u30f3C++\u3067\u306e\u578b\u5909\u63db\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u5b89\u5168\u6027\u306e\u5f37\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>std::variant\u3001std::any\u3001std::optional\u306e\u7a4d\u6975\u7684\u306a\u6d3b\u7528<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u578b\u30c1\u30a7\u30c3\u30af\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d9\u30fc\u30b9\u306e\u578b\u5236\u7d04\u306e\u5c0e\u5165<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u6539\u5584<\/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=\"\">   \/\/ \u5f93\u6765\u306e\u65b9\u6cd5\n   if (derived* d = dynamic_cast&lt;derived*&gt;(base)) {\n       \/\/ \u51e6\u7406\n   }\n\n   \/\/ \u30e2\u30c0\u30f3\u306a\u65b9\u6cd5\n   auto process = [](auto ptr) -&gt; std::expected&lt;void, std::string&gt; {\n       if (!ptr) return std::unexpected(\"null\u30dd\u30a4\u30f3\u30bf\");\n       try {\n           ptr-&gt;process();\n           return {};\n       } catch (const std::exception&amp; e) {\n           return std::unexpected(e.what());\n       }\n   };<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u578b\u306e\u62bd\u8c61\u5316\u30ec\u30d9\u30eb\u306e\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u578b\u6d88\u53bb\uff08Type Erasure\uff09\u30d1\u30bf\u30fc\u30f3\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30dd\u30ea\u30b7\u30fc\u30d9\u30fc\u30b9\u30c7\u30b6\u30a4\u30f3\u306e\u63a1\u7528<\/li>\n\n\n\n<li>\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u6280\u8853\u306e\u6d3b\u7528<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u65b0\u3057\u3044\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u3001std::variant\u3001std::any\u3001std::optional\u306a\u3069\u306e\u65b0\u6a5f\u80fd\u306f\u3001\u5f93\u6765\u306e\u30ad\u30e3\u30b9\u30c8\u306b\u6bd4\u3079\u3066\u3088\u308a\u8868\u73fe\u529b\u304c\u9ad8\u304f\u3001\u578b\u5b89\u5168\u6027\u3082\u512a\u308c\u3066\u3044\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":["post-2057","post","type-post","status-publish","format-standard","category-cpp","nothumb"],"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2057","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=2057"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2057\/revisions"}],"predecessor-version":[{"id":2058,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2057\/revisions\/2058"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}