{"id":1747,"date":"2025-03-24T08:50:00","date_gmt":"2025-03-23T23:50:00","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1747"},"modified":"2025-03-24T08:50:00","modified_gmt":"2025-03-23T23:50:00","slug":"c%e3%83%9d%e3%82%a4%e3%83%b3%e3%83%88%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e5%88%9d%e5%bf%83%e8%80%85%e3%81%a7%e3%82%82%e5%88%86%e3%81%8b%e3%82%8b%e5%9f%ba%e7%a4%8e%e3%81%8b","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1747","title":{"rendered":"C++\u30dd\u30a4\u30f3\u30c8\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a\u521d\u5fc3\u8005\u3067\u3082\u5206\u304b\u308b\u57fa\u790e\u304b\u3089\u5b9f\u8df5\u307e\u30677\u3064\u306e\u30b9\u30c6\u30c3\u30d7"},"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++\u30dd\u30a4\u30f3\u30bf\u306e\u57fa\u790e\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u3068\u306f\u4f55\u304b\uff1a\u5b9f\u4f8b\u3067\u7406\u89e3\u3059\u308b\u30dd\u30a4\u30f3\u30bf\u306e\u672c\u8cea<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">\u30dd\u30a4\u30f3\u30bf\u5909\u6570\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316\uff1a\u6b63\u3057\u3044\u66f8\u304d\u65b9\u3068\u521d\u5fc3\u8005\u306e\u9665\u308a\u3084\u3059\u3044\u7f60<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">\u30dd\u30a4\u30f3\u30bf\u306e\u7a2e\u985e\u3068\u4f7f\u3044\u9053<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u751f\u30dd\u30a4\u30f3\u30bf vs \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\uff1a\u30e2\u30c0\u30f3C++\u3067\u306e\u9078\u629e\u57fa\u6e96<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-5\">\u914d\u5217\u3068\u30dd\u30a4\u30f3\u30bf\u306e\u95a2\u4fc2\uff1a\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u79d8\u8a23<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-6\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u5fb9\u5e95\u89e3\u8aac<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-7\">unique_ptr\u3067\u5b9f\u73fe\u3059\u308b\u5b89\u5168\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-8\">shared_ptr\u3068weak_ptr\u306e\u4f7f\u3044\u65b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-9\">\u30dd\u30a4\u30f3\u30bf\u306e\u30e1\u30e2\u30ea\u7ba1\u7406<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-10\">\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u305f\u3081\u306e\u5177\u4f53\u7684\u306a\u5bfe\u7b56\u3068\u6ce8\u610f\u70b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-11\">\u30c7\u30d0\u30c3\u30ac\u30fc\u3092\u4f7f\u3063\u305f\u30e1\u30e2\u30ea\u554f\u984c\u306e\u7279\u5b9a\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">\u3088\u304f\u3042\u308b\u30dd\u30a4\u30f3\u30bf\u306e\u30d0\u30b0\u3068\u5bfe\u51e6\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">\u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\u3092\u9632\u6b62\u3059\u308b\u305f\u3081\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">null\u30dd\u30a4\u30f3\u30bf\u53c2\u7167\u306e\u9069\u5207\u306a\u51e6\u7406\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-15\">\u5b9f\u8df5\u7684\u306a\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-16\">\u30c7\u30fc\u30bf\u69cb\u9020\u5b9f\u88c5\u3067\u306e\u30dd\u30a4\u30f3\u30bf\u6d3b\u7528\u8853<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-17\">\u5b9f\u52d9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5b66\u3076\u30e1\u30e2\u30ea\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-18\">\u30dd\u30a4\u30f3\u30bf\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-19\">\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u3044\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-20\">\u30e1\u30e2\u30ea\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u6700\u9069\u5316\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++\u30dd\u30a4\u30f3\u30bf\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u3068\u306f\u4f55\u304b\uff1a\u5b9f\u4f8b\u3067\u7406\u89e3\u3059\u308b\u30dd\u30a4\u30f3\u30bf\u306e\u672c\u8cea<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u3068\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u30e1\u30e2\u30ea\u4e0a\u3067\u306e\u5909\u6570\u3084\u30c7\u30fc\u30bf\u306e\u683c\u7d0d\u4f4d\u7f6e\u3092\u793a\u3059\u4e00\u610f\u306e\u756a\u5730\u3067\u3059\u3002\u30dd\u30a4\u30f3\u30bf\u306f\u3001\u3053\u306e\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u3092\u683c\u7d0d\u3059\u308b\u7279\u6b8a\u306a\u5909\u6570\u3067\u3042\u308a\u3001C++\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u4f8b\u3067\u5177\u4f53\u7684\u306b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\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=\"\">int main() {\n    int number = 42;           \/\/ \u901a\u5e38\u306e\u6574\u6570\u5909\u6570\n    int* pointer = &amp;number;    \/\/ number\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u683c\u7d0d\u3059\u308b\u30dd\u30a4\u30f3\u30bf\n\n    std::cout &lt;&lt; \"\u5909\u6570\u306e\u5024: \" &lt;&lt; number &lt;&lt; std::endl;         \/\/ 42\n    std::cout &lt;&lt; \"\u5909\u6570\u306e\u30a2\u30c9\u30ec\u30b9: \" &lt;&lt; &amp;number &lt;&lt; std::endl;  \/\/ \u4f8b\uff1a0x7fff5fbff8ac\n    std::cout &lt;&lt; \"\u30dd\u30a4\u30f3\u30bf\u306e\u5024: \" &lt;&lt; pointer &lt;&lt; std::endl;    \/\/ \u4f8b\uff1a0x7fff5fbff8ac\n    std::cout &lt;&lt; \"\u30dd\u30a4\u30f3\u30bf\u306e\u53c2\u7167\u5148: \" &lt;&lt; *pointer &lt;&lt; std::endl; \/\/ 42\n\n    return 0;\n}<\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>&amp;<\/code>\u6f14\u7b97\u5b50\uff1a\u5909\u6570\u306e\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97<\/li>\n\n\n\n<li><code>*<\/code>\u6f14\u7b97\u5b50\uff1a\u30dd\u30a4\u30f3\u30bf\u304c\u6307\u3059\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u306e\u5024\u3092\u53d6\u5f97\uff08\u30c7\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\uff09<\/li>\n\n\n\n<li>\u30dd\u30a4\u30f3\u30bf\u81ea\u4f53\u3082\u30e1\u30e2\u30ea\u4e0a\u306b\u5b58\u5728\u3059\u308b\u5909\u6570<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u30dd\u30a4\u30f3\u30bf\u5909\u6570\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316\uff1a\u6b63\u3057\u3044\u66f8\u304d\u65b9\u3068\u521d\u5fc3\u8005\u306e\u9665\u308a\u3084\u3059\u3044\u7f60<\/h3>\n\n\n\n<p>\u30dd\u30a4\u30f3\u30bf\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30d1\u30bf\u30fc\u30f3\u3068\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u57fa\u672c\u7684\u306a\u5ba3\u8a00\u30d1\u30bf\u30fc\u30f3\nint* ptr1 = nullptr;     \/\/ \u63a8\u5968\uff1anullptr\u3067\u521d\u671f\u5316\nint* ptr2 = NULL;        \/\/ \u53e4\u3044\u65b9\u6cd5\uff1aC\u8a00\u8a9e\u3068\u306e\u4e92\u63db\u6027\nint* ptr3;               \/\/ \u975e\u63a8\u5968\uff1a\u672a\u521d\u671f\u5316\n\n\/\/ \u914d\u5217\u3068\u30dd\u30a4\u30f3\u30bf\nint numbers[] = {1, 2, 3, 4, 5};\nint* arrayPtr = numbers;  \/\/ \u914d\u5217\u306e\u5148\u982d\u30a2\u30c9\u30ec\u30b9\u3092\u683c\u7d0d\n\n\/\/ const\u4fee\u98fe\u5b50\u306e\u4f7f\u7528\nconst int constValue = 10;\nconst int* ptr4 = &amp;constValue;  \/\/ \u5024\u3092\u5909\u66f4\u3067\u304d\u306a\u3044\u30dd\u30a4\u30f3\u30bf\nint value = 20;\nint* const ptr5 = &amp;value;       \/\/ \u6307\u3059\u5148\u3092\u5909\u66f4\u3067\u304d\u306a\u3044\u30dd\u30a4\u30f3\u30bf<\/pre>\n\n\n\n<p>\u521d\u5fc3\u8005\u304c\u9665\u308a\u3084\u3059\u3044\u7f60\u3068\u5bfe\u51e6\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u672a\u521d\u671f\u5316\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">int* dangerous;          \/\/ \u672a\u521d\u671f\u5316\n*dangerous = 10;         \/\/ \u5371\u967a\uff1a\u672a\u5b9a\u7fa9\u52d5\u4f5c\n\n\/\/ \u6b63\u3057\u3044\u65b9\u6cd5\nint* safe = nullptr;\nif (safe != nullptr) {   \/\/ \u5fc5\u305anull\u30c1\u30a7\u30c3\u30af\n    *safe = 10;\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>dangling pointer\uff08\u5b99\u3076\u3089\u308a\u3093\u30dd\u30a4\u30f3\u30bf\uff09\u306e\u767a\u751f<\/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=\"\">int* createDangling() {\n    int local = 10;\n    return &amp;local;       \/\/ \u5371\u967a\uff1a\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3059\n}\n\n\/\/ \u6b63\u3057\u3044\u65b9\u6cd5\nstd::unique_ptr&lt;int&gt; createSafe() {\n    return std::make_unique&lt;int&gt;(10);\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u30dd\u30a4\u30f3\u30bf\u6f14\u7b97\u306e\u8aa4\u308a<\/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=\"\">int numbers[] = {1, 2, 3, 4, 5};\nint* ptr = numbers;\nptr = ptr + 2;          \/\/ OK\uff1a3\u756a\u76ee\u306e\u8981\u7d20\u3092\u6307\u3059\nptr = ptr - 1;          \/\/ OK\uff1a2\u756a\u76ee\u306e\u8981\u7d20\u3092\u6307\u3059\nif (ptr &gt;= numbers &amp;&amp; ptr &lt; numbers + 5) {  \/\/ \u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\u306e\u91cd\u8981\u6027\n    std::cout &lt;&lt; *ptr &lt;&lt; std::endl;\n}<\/pre>\n\n\n\n<p>\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5e38\u306bnullptr\u3067\u521d\u671f\u5316\u3059\u308b<\/li>\n\n\n\n<li>\u30dd\u30a4\u30f3\u30bf\u4f7f\u7528\u524d\u306enull\u30c1\u30a7\u30c3\u30af<\/li>\n\n\n\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u7a4d\u6975\u7684\u306a\u4f7f\u7528<\/li>\n\n\n\n<li>\u914d\u5217\u64cd\u4f5c\u6642\u306e\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af<\/li>\n\n\n\n<li>const\u4fee\u98fe\u5b50\u306e\u9069\u5207\u306a\u4f7f\u7528<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u3092\u62bc\u3055\u3048\u308b\u3053\u3068\u3067\u3001\u30dd\u30a4\u30f3\u30bf\u306b\u3088\u308b\u591a\u304f\u306e\u4e00\u822c\u7684\u306a\u30d0\u30b0\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u30dd\u30a4\u30f3\u30bf\u306e\u7a2e\u985e\u3068\u4f7f\u3044\u9053<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u751f\u30dd\u30a4\u30f3\u30bf vs \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\uff1a\u30e2\u30c0\u30f3C++\u3067\u306e\u9078\u629e\u57fa\u6e96<\/h3>\n\n\n\n<p>\u30e2\u30c0\u30f3C++\u3067\u306f\u3001\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u65b9\u6cd5\u3068\u3057\u3066\u751f\u30dd\u30a4\u30f3\u30bf\u3068\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e2\u3064\u306e\u9078\u629e\u80a2\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3068\u4f7f\u3044\u5206\u3051\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>1. \u751f\u30dd\u30a4\u30f3\u30bf\uff08Raw Pointer\uff09\u306e\u7279\u5fb4<\/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=\"\">\/\/ \u751f\u30dd\u30a4\u30f3\u30bf\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b\nclass Resource {\npublic:\n    void doSomething() { std::cout &lt;&lt; \"\u30ea\u30bd\u30fc\u30b9\u4f7f\u7528\u4e2d\\n\"; }\n};\n\nvoid rawPointerExample() {\n    Resource* ptr = new Resource();  \/\/ \u30e1\u30e2\u30ea\u78ba\u4fdd\n    ptr-&gt;doSomething();             \/\/ \u30ea\u30bd\u30fc\u30b9\u4f7f\u7528\n    delete ptr;                     \/\/ \u30e1\u30e2\u30ea\u89e3\u653e\uff08\u5fd8\u308c\u3084\u3059\u3044\uff09\n    ptr = nullptr;                  \/\/ null\u8a2d\u5b9a\uff08\u826f\u3044\u7fd2\u6163\uff09\n}<\/pre>\n\n\n\n<p>\u751f\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\u304c\u9069\u5207\u306a\u30b1\u30fc\u30b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6240\u6709\u6a29\u306e\u79fb\u8ee2\u3092\u4f34\u308f\u306a\u3044\u30dd\u30a4\u30f3\u30bf\uff08\u89b3\u6e2c\u7528\uff09<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u6975\u3081\u3066\u91cd\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u4f4e\u30ec\u30d9\u30eb\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u64cd\u4f5c<\/li>\n\n\n\n<li>\u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u3068\u306e\u4e92\u63db\u6027\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p><strong>2. \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u7279\u5fb4<\/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;memory&gt;\n\nvoid smartPointerExample() {\n    \/\/ unique_ptr\u306e\u4f8b\n    auto uniquePtr = std::make_unique&lt;Resource&gt;();\n    uniquePtr-&gt;doSomething();\n    \/\/ \u81ea\u52d5\u7684\u306b\u30e1\u30e2\u30ea\u89e3\u653e\u3055\u308c\u308b\n\n    \/\/ shared_ptr\u306e\u4f8b\n    auto sharedPtr1 = std::make_shared&lt;Resource&gt;();\n    {\n        auto sharedPtr2 = sharedPtr1;  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u5897\u52a0\n        sharedPtr2-&gt;doSomething();\n    }  \/\/ sharedPtr2\u306e\u30b9\u30b3\u30fc\u30d7\u7d42\u4e86\uff08\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u6e1b\u5c11\uff09\n}  \/\/ sharedPtr1\u306e\u30b9\u30b3\u30fc\u30d7\u7d42\u4e86\uff08\u30ea\u30bd\u30fc\u30b9\u89e3\u653e\uff09<\/pre>\n\n\n\n<p>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\u304c\u9069\u5207\u306a\u30b1\u30fc\u30b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u304c\u5fc5\u8981\u306a\u5927\u90e8\u5206\u306e\u30b1\u30fc\u30b9<\/li>\n\n\n\n<li>\u4f8b\u5916\u5b89\u5168\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u5171\u6709\u30ea\u30bd\u30fc\u30b9\u306e\u7ba1\u7406<\/li>\n\n\n\n<li>\u30e2\u30c0\u30f3\u306aC++\u30d7\u30ed\u30b8\u30a7\u30af\u30c8<\/li>\n<\/ul>\n\n\n\n<p>\u9078\u629e\u57fa\u6e96\u306e\u8868\uff1a<\/p>\n\n\n<div id=\"id-df7b8151-2059-4b74-97b2-9aa60dc6b076\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u57fa\u6e96<\/th><th>\u751f\u30dd\u30a4\u30f3\u30bf<\/th><th>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf<\/th><\/tr><\/thead><tbody><tr><td>\u30e1\u30e2\u30ea\u7ba1\u7406<\/td><td>\u624b\u52d5<\/td><td>\u81ea\u52d5<\/td><\/tr><tr><td>\u4f8b\u5916\u5b89\u5168\u6027<\/td><td>\u4f4e\u3044<\/td><td>\u9ad8\u3044<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td><td>\u6700\u9ad8<\/td><td>\u3084\u3084\u52a3\u308b<\/td><\/tr><tr><td>\u30b3\u30fc\u30c9\u5b89\u5168\u6027<\/td><td>\u4f4e\u3044<\/td><td>\u9ad8\u3044<\/td><\/tr><tr><td>\u4f7f\u7528\u63a8\u5968\u5ea6<\/td><td>\u9650\u5b9a\u7684<\/td><td>\u63a8\u5968<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u914d\u5217\u3068\u30dd\u30a4\u30f3\u30bf\u306e\u95a2\u4fc2\uff1a\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u79d8\u8a23<\/h3>\n\n\n\n<p>\u914d\u5217\u3068\u30dd\u30a4\u30f3\u30bf\u306f\u5bc6\u63a5\u306a\u95a2\u4fc2\u306b\u3042\u308a\u3001\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u305f\u3081\u306b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u914d\u5217\u304b\u3089\u30dd\u30a4\u30f3\u30bf\u3078\u306e\u6697\u9ed9\u306e\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=\"\">void arrayPointerRelationship() {\n    int numbers[] = {1, 2, 3, 4, 5};\n    int* ptr = numbers;  \/\/ \u914d\u5217\u306f\u81ea\u52d5\u7684\u306b\u30dd\u30a4\u30f3\u30bf\u306b\u5909\u63db\u3055\u308c\u308b\n\n    \/\/ \u914d\u5217\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\n    std::cout &lt;&lt; numbers[2] &lt;&lt; std::endl;  \/\/ \u914d\u5217\u8868\u8a18\n    std::cout &lt;&lt; *(ptr + 2) &lt;&lt; std::endl;  \/\/ \u30dd\u30a4\u30f3\u30bf\u6f14\u7b97\n\n    \/\/ \u7bc4\u56f2\u30d9\u30fc\u30b9\u306efor\u30eb\u30fc\u30d7\uff08\u914d\u5217\u306e\u5834\u5408\u306e\u307f\u53ef\u80fd\uff09\n    for (const auto&amp; num : numbers) {\n        std::cout &lt;&lt; num &lt;&lt; \" \";\n    }\n}<\/pre>\n\n\n\n<p><strong>2. \u52d5\u7684\u914d\u5217\u306e\u7ba1\u7406<\/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=\"\">void dynamicArrayManagement() {\n    \/\/ \u5f93\u6765\u306e\u65b9\u6cd5\uff08\u975e\u63a8\u5968\uff09\n    int* oldArray = new int[5];\n    delete[] oldArray;  \/\/ \u914d\u5217\u306e\u524a\u9664\u306b\u306f[]\u304c\u5fc5\u8981\n\n    \/\/ \u30e2\u30c0\u30f3\u306a\u65b9\u6cd5\n    std::vector&lt;int&gt; modernArray = {1, 2, 3, 4, 5};  \/\/ \u63a8\u5968\n\n    \/\/ \u5927\u304d\u306a\u914d\u5217\u304c\u5fc5\u8981\u306a\u5834\u5408\n    std::unique_ptr&lt;int[]&gt; largeArray(new int[1000]);\n    \/\/ \u307e\u305f\u306f\n    auto smartArray = std::make_unique&lt;int[]&gt;(1000);\n}<\/pre>\n\n\n\n<p>\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u56fa\u5b9a\u30b5\u30a4\u30ba\u306e\u914d\u5217<\/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=\"\">\/\/ \u30b9\u30bf\u30c3\u30af\u914d\u5217\uff08\u30b5\u30a4\u30ba\u304c\u5c0f\u3055\u304f\u3001\u56fa\u5b9a\u306e\u5834\u5408\uff09\nstd::array&lt;int, 5&gt; stackArray = {1, 2, 3, 4, 5};\n\n\/\/ \u5927\u304d\u306a\u56fa\u5b9a\u30b5\u30a4\u30ba\u914d\u5217\uff08\u30d2\u30fc\u30d7\u4e0a\uff09\nauto heapArray = std::make_unique&lt;std::array&lt;int, 1000&gt;&gt;();<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u53ef\u5909\u30b5\u30a4\u30ba\u306e\u914d\u5217<\/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=\"\">\/\/ \u6a19\u6e96\u7684\u306a\u52d5\u7684\u914d\u5217\nstd::vector&lt;int&gt; dynamicArray;\ndynamicArray.reserve(1000);  \/\/ \u30e1\u30e2\u30ea\u306e\u4e8b\u524d\u78ba\u4fdd\n\n\/\/ \u30ab\u30b9\u30bf\u30e0\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30bf\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\nstd::vector&lt;int, CustomAllocator&lt;int&gt;&gt; customArray;<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u8003\u616e\u3057\u305f\u914d\u5217<\/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=\"\">\/\/ \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u6307\u5b9a\u3057\u305f\u914d\u5217\nalignas(32) int alignedArray[8];  \/\/ SSE\/AVX\u64cd\u4f5c\u306b\u6700\u9069\u5316\n\n\/\/ \u52d5\u7684\u78ba\u4fdd\u306e\u5834\u5408\nvoid* aligned = std::aligned_alloc(32, 8 * sizeof(int));\nint* alignedInts = static_cast&lt;int*&gt;(aligned);\nstd::free(aligned);  \/\/ \u5fd8\u308c\u305a\u306b\u89e3\u653e<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6982\u5ff5\u3092\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u52b9\u7387\u304c\u9ad8\u304f\u3001\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-6\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u5fb9\u5e95\u89e3\u8aac<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">unique_ptr\u3067\u5b9f\u73fe\u3059\u308b\u5b89\u5168\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406<\/h3>\n\n\n\n<p><code>std::unique_ptr<\/code>\u306f\u3001\u5358\u4e00\u306e\u6240\u6709\u6a29\u3092\u8868\u73fe\u3059\u308b\u6700\u3082\u57fa\u672c\u7684\u306a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3067\u3059\u3002\u30ea\u30bd\u30fc\u30b9\u306e\u6392\u4ed6\u7684\u306a\u6240\u6709\u6a29\u3092\u4fdd\u8a3c\u3057\u3001\u30b9\u30b3\u30fc\u30d7\u3092\u629c\u3051\u308b\u3068\u81ea\u52d5\u7684\u306b\u30ea\u30bd\u30fc\u30b9\u3092\u89e3\u653e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u57fa\u672c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5<\/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;memory&gt;\n#include &lt;iostream&gt;\n\nclass Resource {\npublic:\n    Resource() { std::cout &lt;&lt; \"\u30ea\u30bd\u30fc\u30b9\u4f5c\u6210\\n\"; }\n    ~Resource() { std::cout &lt;&lt; \"\u30ea\u30bd\u30fc\u30b9\u7834\u68c4\\n\"; }\n    void doWork() { std::cout &lt;&lt; \"\u4f5c\u696d\u5b9f\u884c\u4e2d\\n\"; }\n};\n\nvoid uniquePtrBasics() {\n    \/\/ \u63a8\u5968\u3055\u308c\u308b\u4f5c\u6210\u65b9\u6cd5\n    auto resource = std::make_unique&lt;Resource&gt;();\n    resource-&gt;doWork();\n\n    \/\/ \u660e\u793a\u7684\u306a\u89e3\u653e\uff08\u901a\u5e38\u306f\u4e0d\u8981\uff09\n    resource.reset();\n\n    \/\/ \u5225\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u5272\u308a\u5f53\u3066\n    resource = std::make_unique&lt;Resource&gt;();\n}  \/\/ \u30b9\u30b3\u30fc\u30d7\u3092\u629c\u3051\u308b\u3068\u81ea\u52d5\u7684\u306b\u89e3\u653e<\/pre>\n\n\n\n<p><strong>2. \u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u306e\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=\"\">struct FileDeleter {\n    void operator()(FILE* file) {\n        if (file) {\n            fclose(file);\n            std::cout &lt;&lt; \"\u30d5\u30a1\u30a4\u30eb\u3092\u30af\u30ed\u30fc\u30ba\u3057\u307e\u3057\u305f\\n\";\n        }\n    }\n};\n\nvoid customDeleterExample() {\n    \/\/ \u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u30cf\u30f3\u30c9\u30eb\u7ba1\u7406\n    {\n        std::unique_ptr&lt;FILE, FileDeleter&gt; file(fopen(\"test.txt\", \"w\"));\n        if (file) {\n            fputs(\"\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\", file.get());\n        }\n    }  \/\/ FileDeleter\u304c\u81ea\u52d5\u7684\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\n}<\/pre>\n\n\n\n<p><strong>3. \u914d\u5217\u306e\u7ba1\u7406<\/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=\"\">void arrayManagement() {\n    \/\/ \u914d\u5217\u306e\u52d5\u7684\u78ba\u4fdd\n    auto numbers = std::make_unique&lt;int[]&gt;(10);\n    for (int i = 0; i &lt; 10; ++i) {\n        numbers[i] = i * i;\n    }\n\n    \/\/ \u4e8c\u6b21\u5143\u914d\u5217\u306e\u7ba1\u7406\n    auto matrix = std::make_unique&lt;int[]&gt;(100);  \/\/ 10x10\n    auto access = [&amp;matrix](int i, int j) -&gt; int&amp; {\n        return matrix[i * 10 + j];\n    };\n    access(5, 5) = 25;  \/\/ \u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">shared_ptr\u3068weak_ptr\u306e\u4f7f\u3044\u65b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p><code>std::shared_ptr<\/code>\u306f\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u306b\u3088\u308b\u5171\u6709\u6240\u6709\u6a29\u3092\u5b9f\u73fe\u3057\u3001<code>std::weak_ptr<\/code>\u306f\u5faa\u74b0\u53c2\u7167\u3092\u9632\u3050\u305f\u3081\u306e\u88dc\u52a9\u7684\u306a\u30dd\u30a4\u30f3\u30bf\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. shared_ptr\u306e\u57fa\u672c<\/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 SharedResource {\npublic:\n    SharedResource(const std::string&amp; data) : data_(data) {\n        std::cout &lt;&lt; \"\u30ea\u30bd\u30fc\u30b9\u4f5c\u6210: \" &lt;&lt; data_ &lt;&lt; \"\\n\";\n    }\n    ~SharedResource() {\n        std::cout &lt;&lt; \"\u30ea\u30bd\u30fc\u30b9\u7834\u68c4: \" &lt;&lt; data_ &lt;&lt; \"\\n\";\n    }\n    std::string getData() const { return data_; }\nprivate:\n    std::string data_;\n};\n\nvoid sharedPtrBasics() {\n    \/\/ \u5171\u6709\u30ea\u30bd\u30fc\u30b9\u306e\u4f5c\u6210\n    auto resource1 = std::make_shared&lt;SharedResource&gt;(\"\u5171\u6709\u30c7\u30fc\u30bf\");\n    std::cout &lt;&lt; \"\u53c2\u7167\u30ab\u30a6\u30f3\u30c8: \" &lt;&lt; resource1.use_count() &lt;&lt; \"\\n\";  \/\/ 1\n\n    {\n        auto resource2 = resource1;  \/\/ \u5171\u6709\n        std::cout &lt;&lt; \"\u53c2\u7167\u30ab\u30a6\u30f3\u30c8: \" &lt;&lt; resource1.use_count() &lt;&lt; \"\\n\";  \/\/ 2\n        std::cout &lt;&lt; \"\u30c7\u30fc\u30bf: \" &lt;&lt; resource2-&gt;getData() &lt;&lt; \"\\n\";\n    }  \/\/ resource2\u306e\u30b9\u30b3\u30fc\u30d7\u7d42\u4e86\n\n    std::cout &lt;&lt; \"\u53c2\u7167\u30ab\u30a6\u30f3\u30c8: \" &lt;&lt; resource1.use_count() &lt;&lt; \"\\n\";  \/\/ 1\n}<\/pre>\n\n\n\n<p><strong>2. \u5faa\u74b0\u53c2\u7167\u306e\u554f\u984c\u3068\u89e3\u6c7a\u7b56<\/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 Node {\npublic:\n    Node(const std::string&amp; value) : value_(value) {}\n    ~Node() { std::cout &lt;&lt; value_ &lt;&lt; \"\u306e\u30ce\u30fc\u30c9\u3092\u7834\u68c4\\n\"; }\n\n    \/\/ \u5faa\u74b0\u53c2\u7167\u3092\u5f15\u304d\u8d77\u3053\u3059\u60aa\u3044\u4f8b\n    void setNext(const std::shared_ptr&lt;Node&gt;&amp; next) {\n        next_ = next;\n    }\n\n    \/\/ weak_ptr\u3092\u4f7f\u7528\u3057\u305f\u6b63\u3057\u3044\u4f8b\n    void setNextWeak(const std::shared_ptr&lt;Node&gt;&amp; next) {\n        nextWeak_ = next;\n    }\n\nprivate:\n    std::string value_;\n    std::shared_ptr&lt;Node&gt; next_;      \/\/ \u5faa\u74b0\u53c2\u7167\u306e\u53ef\u80fd\u6027\n    std::weak_ptr&lt;Node&gt; nextWeak_;    \/\/ \u5b89\u5168\u306a\u53c2\u7167\n};\n\nvoid circularReferenceExample() {\n    \/\/ \u5faa\u74b0\u53c2\u7167\u306e\u4f8b\n    {\n        auto node1 = std::make_shared&lt;Node&gt;(\"Node1\");\n        auto node2 = std::make_shared&lt;Node&gt;(\"Node2\");\n\n        node1-&gt;setNext(node2);\n        node2-&gt;setNext(node1);  \/\/ \u5faa\u74b0\u53c2\u7167\u767a\u751f\uff01\n    }  \/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\n\n    \/\/ weak_ptr\u3092\u4f7f\u7528\u3057\u305f\u89e3\u6c7a\u7b56\n    {\n        auto node3 = std::make_shared&lt;Node&gt;(\"Node3\");\n        auto node4 = std::make_shared&lt;Node&gt;(\"Node4\");\n\n        node3-&gt;setNextWeak(node4);\n        node4-&gt;setNextWeak(node3);  \/\/ \u5b89\u5168\uff01\n    }  \/\/ \u6b63\u3057\u304f\u89e3\u653e\u3055\u308c\u308b\n}<\/pre>\n\n\n\n<p>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u4f7f\u7528\u6642\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5e38\u306b<code>std::make_unique<\/code>\/<code>std::make_shared<\/code>\u3092\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u306e\u6240\u6709\u6a29\u304c\u5358\u4e00\u306e\u5834\u5408\u306f<code>unique_ptr<\/code>\u3092\u512a\u5148\u3059\u308b<\/li>\n\n\n\n<li>\u5171\u6709\u304c\u5fc5\u8981\u306a\u5834\u5408\u306e\u307f<code>shared_ptr<\/code>\u3092\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u5faa\u74b0\u53c2\u7167\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306f<code>weak_ptr<\/code>\u3092\u691c\u8a0e\u3059\u308b<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u9069\u5207\u306b\u5b9f\u88c5\u3059\u308b<\/li>\n\n\n\n<li>\u30dd\u30a4\u30f3\u30bf\u306e\u578b\u5909\u63db\u306b\u306f\u5c02\u7528\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\uff08<code>static_pointer_cast<\/code>\u306a\u3069\uff09<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u539f\u5247\u306b\u5f93\u3046\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u306a\u3044\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-9\">\u30dd\u30a4\u30f3\u30bf\u306e\u30e1\u30e2\u30ea\u7ba1\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u305f\u3081\u306e\u5177\u4f53\u7684\u306a\u5bfe\u7b56\u3068\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306f\u3001\u52d5\u7684\u306b\u78ba\u4fdd\u3057\u305f\u30e1\u30e2\u30ea\u304c\u9069\u5207\u306b\u89e3\u653e\u3055\u308c\u306a\u3044\u72b6\u614b\u3092\u6307\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u3067\u306f\u3001\u4e00\u822c\u7684\u306a\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u30d1\u30bf\u30fc\u30f3\u3068\u3001\u305d\u306e\u9632\u6b62\u7b56\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. RAII\uff08Resource Acquisition Is Initialization\uff09\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5<\/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;memory&gt;\n#include &lt;vector&gt;\n\n\/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u304c\u8d77\u304d\u3084\u3059\u3044\u5f93\u6765\u306e\u5b9f\u88c5\nclass ResourceManager_Bad {\nprivate:\n    int* data;\npublic:\n    ResourceManager_Bad() : data(new int[100]) {}\n    ~ResourceManager_Bad() {} \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067delete\u3092\u5fd8\u308c\u3066\u3044\u308b\n};\n\n\/\/ RAII\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u305f\u5b89\u5168\u306a\u5b9f\u88c5\nclass ResourceManager_Good {\nprivate:\n    std::unique_ptr&lt;int[]&gt; data;\npublic:\n    ResourceManager_Good() : data(std::make_unique&lt;int[]&gt;(100)) {}\n    \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u81ea\u52d5\u7684\u306b\u547c\u3070\u308c\u3001\u30e1\u30e2\u30ea\u306f\u89e3\u653e\u3055\u308c\u308b\n};<\/pre>\n\n\n\n<p><strong>2. \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u6d3b\u7528\u3057\u305f\u30e1\u30e2\u30ea\u8ffd\u8de1<\/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 MemoryTracker {\npublic:\n    template&lt;typename T&gt;\n    static std::shared_ptr&lt;T&gt; allocate() {\n        return std::shared_ptr&lt;T&gt;(new T(), [](T* ptr) {\n            std::cout &lt;&lt; \"\u30e1\u30e2\u30ea\u89e3\u653e: \" &lt;&lt; typeid(T).name() &lt;&lt; std::endl;\n            delete ptr;\n        });\n    }\n};\n\nvoid memoryTrackingExample() {\n    auto resource = MemoryTracker::allocate&lt;int&gt;();\n    \/\/ \u30ea\u30bd\u30fc\u30b9\u306e\u4f7f\u7528\n    *resource = 42;\n    \/\/ \u30b9\u30b3\u30fc\u30d7\u3092\u629c\u3051\u308b\u3068\u81ea\u52d5\u7684\u306b\u89e3\u653e\u3055\u308c\u3001\u30ed\u30b0\u304c\u51fa\u529b\u3055\u308c\u308b\n}<\/pre>\n\n\n\n<p><strong>3. \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u4e00\u822c\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3068\u5bfe\u7b56<\/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=\"\">void commonMemoryLeaks() {\n    \/\/ 1. \u4f8b\u5916\u767a\u751f\u6642\u306e\u30ea\u30fc\u30af\n    try {\n        int* data = new int[1000];\n        \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u51e6\u7406\n        throw std::runtime_error(\"\u30a8\u30e9\u30fc\u767a\u751f\");\n        delete[] data;  \/\/ \u3053\u306e\u884c\u306f\u5b9f\u884c\u3055\u308c\u306a\u3044\n    } catch (...) {\n        \/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u767a\u751f\n    }\n\n    \/\/ \u5bfe\u7b56: \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\n    try {\n        auto data = std::make_unique&lt;int[]&gt;(1000);\n        throw std::runtime_error(\"\u30a8\u30e9\u30fc\u767a\u751f\");\n    } catch (...) {\n        \/\/ \u30e1\u30e2\u30ea\u306f\u81ea\u52d5\u7684\u306b\u89e3\u653e\u3055\u308c\u308b\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u30c7\u30d0\u30c3\u30ac\u30fc\u3092\u4f7f\u3063\u305f\u30e1\u30e2\u30ea\u554f\u984c\u306e\u7279\u5b9a\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u554f\u984c\u3092\u52b9\u679c\u7684\u306b\u30c7\u30d0\u30c3\u30b0\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u9069\u5207\u306a\u30c4\u30fc\u30eb\u3068\u624b\u6cd5\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. Valgrind\u3092\u4f7f\u7528\u3057\u305f\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u691c\u51fa<\/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=\"\">\/\/ \u30b3\u30f3\u30d1\u30a4\u30eb: g++ -g memory_test.cpp -o memory_test\n\/\/ \u5b9f\u884c: valgrind --leak-check=full .\/memory_test\n\nint main() {\n    int* leakedMemory = new int[10];  \/\/ \u30ea\u30fc\u30af\u767a\u751f\n    \/\/ delete[] leakedMemory\u3092\u5fd8\u308c\u3066\u3044\u308b\n    return 0;\n}\n\n\/* Valgrind\u306e\u51fa\u529b\u4f8b:\n==12345== HEAP SUMMARY:\n==12345==     in use at exit: 40 bytes in 1 blocks\n==12345==   total heap usage: 1 allocs, 0 frees, 40 bytes allocated\n==12345== LEAK SUMMARY:\n==12345==    definitely lost: 40 bytes in 1 blocks\n*\/<\/pre>\n\n\n\n<p><strong>2. AddressSanitizer\u3092\u4f7f\u7528\u3057\u305f\u30e1\u30e2\u30ea\u30a8\u30e9\u30fc\u691c\u51fa<\/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=\"\">\/\/ \u30b3\u30f3\u30d1\u30a4\u30eb: g++ -fsanitize=address -g memory_test.cpp -o memory_test\n\nvoid memoryErrorExample() {\n    int* array = new int[100];\n    array[100] = 0;  \/\/ \u914d\u5217\u5916\u30a2\u30af\u30bb\u30b9\n    delete[] array;\n}\n\n\/* ASAN\u306e\u51fa\u529b\u4f8b:\n==12345==ERROR: AddressSanitizer: heap-buffer-overflow on address...\n*\/<\/pre>\n\n\n\n<p><strong>3. \u30ab\u30b9\u30bf\u30e0\u30e1\u30e2\u30ea\u30c8\u30e9\u30c3\u30ab\u30fc\u306e\u5b9f\u88c5<\/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 MemoryDebugger {\nprivate:\n    static std::unordered_map&lt;void*, size_t&gt; allocations;\n    static std::mutex mutex;\n\npublic:\n    static void* trackAllocation(size_t size) {\n        void* ptr = malloc(size);\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        allocations[ptr] = size;\n        return ptr;\n    }\n\n    static void trackDeallocation(void* ptr) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        allocations.erase(ptr);\n        free(ptr);\n    }\n\n    static void printLeaks() {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        for (const auto&amp; [ptr, size] : allocations) {\n            std::cout &lt;&lt; \"\u30ea\u30fc\u30af\u691c\u51fa: \" &lt;&lt; ptr &lt;&lt; \" (\" &lt;&lt; size &lt;&lt; \" bytes)\\n\";\n        }\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid* operator new(size_t size) {\n    return MemoryDebugger::trackAllocation(size);\n}\n\nvoid operator delete(void* ptr) noexcept {\n    MemoryDebugger::trackDeallocation(ptr);\n}<\/pre>\n\n\n\n<p>\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u512a\u5148\u7684\u306b\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u751f\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306fRAII\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u7528<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u78ba\u4fdd\u30fb\u89e3\u653e\u306e\u30da\u30a2\u3092\u78ba\u5b9f\u306b\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30c7\u30d0\u30c3\u30b0\u30c4\u30fc\u30eb\u3092\u5b9a\u671f\u7684\u306b\u4f7f\u7528<\/li>\n\n\n\n<li>\u4f8b\u5916\u5b89\u5168\u6027\u3092\u8003\u616e\u3057\u305f\u30b3\u30fc\u30c9\u8a2d\u8a08<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u5b9f\u88c5<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u539f\u5247\u3068\u624b\u6cd5\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u95a2\u9023\u306e\u554f\u984c\u3092\u52b9\u679c\u7684\u306b\u9632\u304e\u3001\u767a\u898b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-12\">\u3088\u304f\u3042\u308b\u30dd\u30a4\u30f3\u30bf\u306e\u30d0\u30b0\u3068\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\u3092\u9632\u6b62\u3059\u308b\u305f\u3081\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\u306f\u3001\u65e2\u306b\u89e3\u653e\u3055\u308c\u305f\u30e1\u30e2\u30ea\u3092\u6307\u3057\u793a\u3059\u30dd\u30a4\u30f3\u30bf\u3067\u3001\u6df1\u523b\u306a\u30d0\u30b0\u306e\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\u304c\u767a\u751f\u3059\u308b\u5178\u578b\u7684\u306a\u30b1\u30fc\u30b9<\/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. \u95a2\u6570\u7d42\u4e86\u5f8c\u306e\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u53c2\u7167\nint* getDanglingPointer() {\n    int localVar = 42;\n    return &amp;localVar;  \/\/ \u5371\u967a\uff1a\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3059\n}\n\n\/\/ 2. \u89e3\u653e\u6e08\u307f\u30e1\u30e2\u30ea\u306e\u53c2\u7167\nvoid useAfterFree() {\n    int* ptr = new int(42);\n    delete ptr;        \/\/ \u30e1\u30e2\u30ea\u89e3\u653e\n    *ptr = 100;       \/\/ \u5371\u967a\uff1a\u89e3\u653e\u6e08\u307f\u30e1\u30e2\u30ea\u3078\u306e\u30a2\u30af\u30bb\u30b9\n}\n\n\/\/ 3. \u7121\u52b9\u306b\u306a\u3063\u305f\u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u4f7f\u7528\nvoid invalidIterator() {\n    std::vector&lt;int&gt; numbers{1, 2, 3};\n    auto it = numbers.begin();\n    numbers.push_back(4);  \/\/ \u518d\u5272\u308a\u5f53\u3066\u306e\u53ef\u80fd\u6027\n    *it = 10;             \/\/ \u5371\u967a\uff1a\u7121\u52b9\u5316\u3055\u308c\u305f\u30a4\u30c6\u30ec\u30fc\u30bf\n}<\/pre>\n\n\n\n<p><strong>\u5bfe\u7b56\u3068\u9632\u6b62\u7b56<\/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. \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\nstd::unique_ptr&lt;int&gt; getSafePointer() {\n    return std::make_unique&lt;int&gt;(42);\n}\n\n\/\/ 2. \u30dd\u30a4\u30f3\u30bf\u306enull\u30ea\u30bb\u30c3\u30c8\nvoid safeDelete() {\n    int* ptr = new int(42);\n    delete ptr;\n    ptr = nullptr;    \/\/ \u660e\u793a\u7684\u306bnull\u306b\u8a2d\u5b9a\n    if (ptr) {        \/\/ \u4ee5\u5f8c\u306e\u4f7f\u7528\u3092\u9632\u6b62\n        *ptr = 100;\n    }\n}\n\n\/\/ 3. \u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u9069\u5207\u306a\u66f4\u65b0\nvoid safeIterator() {\n    std::vector&lt;int&gt; numbers{1, 2, 3};\n    numbers.reserve(10);  \/\/ \u518d\u5272\u308a\u5f53\u3066\u3092\u9632\u6b62\n    auto it = numbers.begin();\n    numbers.push_back(4);\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">null\u30dd\u30a4\u30f3\u30bf\u53c2\u7167\u306e\u9069\u5207\u306a\u51e6\u7406\u65b9\u6cd5<\/h3>\n\n\n\n<p>null\u30dd\u30a4\u30f3\u30bf\u306e\u4e0d\u9069\u5207\u306a\u51e6\u7406\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30af\u30e9\u30c3\u30b7\u30e5\u3092\u5f15\u304d\u8d77\u3053\u3059\u4e3b\u306a\u539f\u56e0\u306e\u4e00\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. null\u30c1\u30a7\u30c3\u30af\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/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 SafeResource {\nprivate:\n    int* data;\n\npublic:\n    SafeResource() : data(nullptr) {}\n\n    \/\/ \u660e\u793a\u7684\u306anull\u30c1\u30a7\u30c3\u30af\n    bool initializeData() {\n        data = new(std::nothrow) int[1000];\n        return data != nullptr;\n    }\n\n    \/\/ \u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\n    bool getData(size_t index, int&amp; value) const {\n        if (!data || index &gt;= 1000) {\n            return false;\n        }\n        value = data[index];\n        return true;\n    }\n\n    ~SafeResource() {\n        delete[] data;\n    }\n};<\/pre>\n\n\n\n<p><strong>2. \u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u5024\u3092\u4f7f\u7528\u3057\u305f\u5b89\u5168\u306a\u5b9f\u88c5<\/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\nclass ModernResource {\npublic:\n    static std::optional&lt;int&gt; getValue(const int* ptr) {\n        if (!ptr) {\n            return std::nullopt;\n        }\n        return *ptr;\n    }\n\n    static void processValue(const std::optional&lt;int&gt;&amp; value) {\n        if (value) {\n            std::cout &lt;&lt; \"\u5024: \" &lt;&lt; *value &lt;&lt; std::endl;\n        } else {\n            std::cout &lt;&lt; \"\u5024\u304c\u5b58\u5728\u3057\u307e\u305b\u3093\" &lt;&lt; std::endl;\n        }\n    }\n};\n\nvoid optionalExample() {\n    int* ptr = nullptr;\n    auto value = ModernResource::getValue(ptr);\n    ModernResource::processValue(value);\n}<\/pre>\n\n\n\n<p><strong>3. \u30a8\u30e9\u30fc\u51e6\u7406\u3068\u30ed\u30ae\u30f3\u30b0<\/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 PointerLogger {\npublic:\n    static void logNullError(const char* functionName) {\n        std::cerr &lt;&lt; \"Null pointer error in \" &lt;&lt; functionName &lt;&lt; std::endl;\n        \/\/ \u30a8\u30e9\u30fc\u30ed\u30b0\u306e\u8a18\u9332\u3084\u30a8\u30e9\u30fc\u8ffd\u8de1\u306e\u5b9f\u88c5\n    }\n};\n\ntemplate&lt;typename T&gt;\nclass SafePointer {\nprivate:\n    T* ptr;\n\npublic:\n    SafePointer(T* p) : ptr(p) {}\n\n    bool isValid() const { return ptr != nullptr; }\n\n    bool access(std::function&lt;void(T*)&gt; operation) {\n        if (!ptr) {\n            PointerLogger::logNullError(__FUNCTION__);\n            return false;\n        }\n        operation(ptr);\n        return true;\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid safePointerExample() {\n    SafePointer&lt;int&gt; sp(new int(42));\n    sp.access([](int* p) {\n        std::cout &lt;&lt; \"\u5024: \" &lt;&lt; *p &lt;&lt; std::endl;\n    });\n}<\/pre>\n\n\n\n<p>\u30d0\u30b0\u9632\u6b62\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30dd\u30a4\u30f3\u30bf\u306e\u521d\u671f\u5316<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5e38\u306bnullptr\u3067\u521d\u671f\u5316<\/li>\n\n\n\n<li>\u521d\u671f\u5316\u76f4\u5f8c\u306e\u6709\u52b9\u6027\u30c1\u30a7\u30c3\u30af<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u78ba\u4fdd\u306e\u6210\u529f\u78ba\u8a8d<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u7ba1\u7406<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528<\/li>\n\n\n\n<li>RAII\u30d1\u30bf\u30fc\u30f3\u306e\u9069\u7528<\/li>\n\n\n\n<li>\u89e3\u653e\u5f8c\u306enull\u30ea\u30bb\u30c3\u30c8<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30a2\u30af\u30bb\u30b9\u5236\u5fa1<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>null \u30c1\u30a7\u30c3\u30af\u306e\u5fb9\u5e95<\/li>\n\n\n\n<li>\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b5\u30e1\u30bd\u30c3\u30c9\u306e\u63d0\u4f9b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30a8\u30e9\u30fc\u51e6\u7406<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f8b\u5916\u51e6\u7406\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30ed\u30b0\u306e\u8a18\u9332<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30ea\u30ab\u30d0\u30ea\u30fc\u306e\u624b\u9806\u78ba\u7acb<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5bfe\u7b56\u3092\u9069\u5207\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u30dd\u30a4\u30f3\u30bf\u95a2\u9023\u306e\u30d0\u30b0\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">\u5b9f\u8df5\u7684\u306a\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u30c7\u30fc\u30bf\u69cb\u9020\u5b9f\u88c5\u3067\u306e\u30dd\u30a4\u30f3\u30bf\u6d3b\u7528\u8853<\/h3>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u5b9f\u88c5\u3092\u901a\u3058\u3066\u3001\u30dd\u30a4\u30f3\u30bf\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u9023\u7d50\u30ea\u30b9\u30c8\u306e\u5b9f\u88c5<\/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 T&gt;\nclass LinkedList {\nprivate:\n    struct Node {\n        T data;\n        std::unique_ptr&lt;Node&gt; next;\n        Node(const T&amp; value) : data(value), next(nullptr) {}\n    };\n\n    std::unique_ptr&lt;Node&gt; head;\n    size_t size_{0};\n\npublic:\n    void pushFront(const T&amp; value) {\n        auto newNode = std::make_unique&lt;Node&gt;(value);\n        newNode-&gt;next = std::move(head);\n        head = std::move(newNode);\n        ++size_;\n    }\n\n    bool popFront() {\n        if (!head) return false;\n        head = std::move(head-&gt;next);\n        --size_;\n        return true;\n    }\n\n    size_t size() const { return size_; }\n\n    \/\/ \u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u5b9f\u88c5\n    class Iterator {\n        Node* current;\n    public:\n        Iterator(Node* node) : current(node) {}\n        T&amp; operator*() { return current-&gt;data; }\n        Iterator&amp; operator++() {\n            current = current-&gt;next.get();\n            return *this;\n        }\n        bool operator!=(const Iterator&amp; other) {\n            return current != other.current;\n        }\n    };\n\n    Iterator begin() { return Iterator(head.get()); }\n    Iterator end() { return Iterator(nullptr); }\n};<\/pre>\n\n\n\n<p><strong>2. \u4e8c\u5206\u63a2\u7d22\u6728\u306e\u5b9f\u88c5<\/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 T&gt;\nclass BinarySearchTree {\nprivate:\n    struct Node {\n        T data;\n        std::unique_ptr&lt;Node&gt; left;\n        std::unique_ptr&lt;Node&gt; right;\n        Node* parent;  \/\/ \u89b3\u6e2c\u7528\u30dd\u30a4\u30f3\u30bf\n\n        Node(const T&amp; value) \n            : data(value), left(nullptr), right(nullptr), parent(nullptr) {}\n    };\n\n    std::unique_ptr&lt;Node&gt; root;\n\n    void insertNode(std::unique_ptr&lt;Node&gt;&amp; node, Node* parent, const T&amp; value) {\n        if (!node) {\n            node = std::make_unique&lt;Node&gt;(value);\n            node-&gt;parent = parent;\n            return;\n        }\n\n        if (value &lt; node-&gt;data) {\n            insertNode(node-&gt;left, node.get(), value);\n        } else if (value &gt; node-&gt;data) {\n            insertNode(node-&gt;right, node.get(), value);\n        }\n    }\n\npublic:\n    void insert(const T&amp; value) {\n        insertNode(root, nullptr, value);\n    }\n\n    Node* find(const T&amp; value) {\n        Node* current = root.get();\n        while (current) {\n            if (value == current-&gt;data) return current;\n            current = (value &lt; current-&gt;data) ? \n                     current-&gt;left.get() : current-&gt;right.get();\n        }\n        return nullptr;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u5b9f\u52d9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5b66\u3076\u30e1\u30e2\u30ea\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b\u30e1\u30e2\u30ea\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u5b9f\u88c5<\/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 T, size_t PoolSize = 1000&gt;\nclass MemoryPool {\nprivate:\n    struct Block {\n        T data;\n        bool used{false};\n    };\n\n    std::array&lt;Block, PoolSize&gt; pool;\n    std::vector&lt;size_t&gt; freeIndices;\n\npublic:\n    MemoryPool() {\n        freeIndices.reserve(PoolSize);\n        for (size_t i = 0; i &lt; PoolSize; ++i) {\n            freeIndices.push_back(i);\n        }\n    }\n\n    T* allocate() {\n        if (freeIndices.empty()) return nullptr;\n\n        size_t index = freeIndices.back();\n        freeIndices.pop_back();\n        pool[index].used = true;\n        return &amp;pool[index].data;\n    }\n\n    void deallocate(T* ptr) {\n        if (!ptr) return;\n\n        auto index = static_cast&lt;size_t&gt;(\n            ptr - &amp;pool[0].data\n        );\n\n        if (index &lt; PoolSize &amp;&amp; pool[index].used) {\n            pool[index].used = false;\n            freeIndices.push_back(index);\n        }\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nclass GameObject {\n    int x, y;\n    std::string name;\npublic:\n    GameObject() = default;\n    void initialize(int x_, int y_, const std::string&amp; name_) {\n        x = x_; y = y_; name = name_;\n    }\n};\n\nvoid memoryPoolExample() {\n    MemoryPool&lt;GameObject&gt; pool;\n    std::vector&lt;GameObject*&gt; objects;\n\n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u78ba\u4fdd\n    for (int i = 0; i &lt; 100; ++i) {\n        if (auto obj = pool.allocate()) {\n            obj-&gt;initialize(i, i, \"Object\" + std::to_string(i));\n            objects.push_back(obj);\n        }\n    }\n\n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u89e3\u653e\n    for (auto obj : objects) {\n        pool.deallocate(obj);\n    }\n}<\/pre>\n\n\n\n<p><strong>2. \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u5b9f\u88c5<\/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 T&gt;\nclass CustomAllocator {\nprivate:\n    static constexpr size_t BlockSize = 4096;\n    std::vector&lt;std::unique_ptr&lt;T[]&gt;&gt; blocks;\n    std::vector&lt;T*&gt; freeList;\n\npublic:\n    T* allocate(size_t n) {\n        if (n == 1 &amp;&amp; !freeList.empty()) {\n            T* ptr = freeList.back();\n            freeList.pop_back();\n            return ptr;\n        }\n\n        auto newBlock = std::make_unique&lt;T[]&gt;(BlockSize);\n        T* blockPtr = newBlock.get();\n        blocks.push_back(std::move(newBlock));\n\n        \/\/ \u6b8b\u308a\u3092\u30d5\u30ea\u30fc\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\n        for (size_t i = 1; i &lt; BlockSize; ++i) {\n            freeList.push_back(&amp;blockPtr[i]);\n        }\n\n        return blockPtr;\n    }\n\n    void deallocate(T* ptr) {\n        if (ptr) freeList.push_back(ptr);\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nstruct LargeObject {\n    std::array&lt;char, 1024&gt; data;\n};\n\nvoid customAllocatorExample() {\n    CustomAllocator&lt;LargeObject&gt; allocator;\n    std::vector&lt;LargeObject*, CustomAllocator&lt;LargeObject*&gt;&gt; objects;\n\n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u78ba\u4fdd\u3068\u89e3\u653e\n    for (int i = 0; i &lt; 10; ++i) {\n        objects.push_back(allocator.allocate(1));\n    }\n\n    for (auto obj : objects) {\n        allocator.deallocate(obj);\n    }\n}<\/pre>\n\n\n\n<p>\u5b9f\u88c5\u6642\u306e\u6ce8\u610f\u70b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u9078\u629e<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7528\u9014\u306b\u5fdc\u3058\u305f\u9069\u5207\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u9078\u629e<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u52b9\u7387\u3068\u30a2\u30af\u30bb\u30b9\u52b9\u7387\u306e\u30d0\u30e9\u30f3\u30b9\u8003\u616e<\/li>\n\n\n\n<li>\u30b9\u30ec\u30c3\u30c9\u5b89\u5168\u6027\u306e\u8003\u616e<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u7ba1\u7406<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u9069\u5207\u306a\u4f7f\u7528<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u9632\u6b62<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u8003\u616e<\/li>\n\n\n\n<li>\u4e0d\u8981\u306a\u30e1\u30e2\u30ea\u30b3\u30d4\u30fc\u306e\u524a\u6e1b<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u8df5\u7684\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u3068\u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-18\">\u30dd\u30a4\u30f3\u30bf\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>CPU\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u52b9\u7387\u7684\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30c7\u30fc\u30bf\u5c40\u6240\u6027\u306e\u6700\u9069\u5316<\/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;chrono&gt;\n#include &lt;vector&gt;\n#include &lt;memory&gt;\n\n\/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u975e\u52b9\u7387\u306a\u5b9f\u88c5\nclass CacheUnfriendly {\n    struct Node {\n        int data;\n        std::unique_ptr&lt;Node&gt; next;\n    };\n    std::unique_ptr&lt;Node&gt; head;\n\npublic:\n    void insert(int value) {\n        auto newNode = std::make_unique&lt;Node&gt;();\n        newNode-&gt;data = value;\n        newNode-&gt;next = std::move(head);\n        head = std::move(newNode);\n    }\n};\n\n\/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u5b9f\u88c5\nclass CacheFriendly {\n    std::vector&lt;int&gt; data;\n\npublic:\n    void insert(int value) {\n        data.push_back(value);\n    }\n};\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\nvoid comparePerformance() {\n    constexpr int iterations = 1000000;\n\n    auto start = std::chrono::high_resolution_clock::now();\n    {\n        CacheUnfriendly list;\n        for (int i = 0; i &lt; iterations; ++i) {\n            list.insert(i);\n        }\n    }\n    auto end = std::chrono::high_resolution_clock::now();\n    auto unfriendlyTime = std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;(end - start);\n\n    start = std::chrono::high_resolution_clock::now();\n    {\n        CacheFriendly list;\n        list.data.reserve(iterations);  \/\/ \u30e1\u30e2\u30ea\u306e\u4e8b\u524d\u78ba\u4fdd\n        for (int i = 0; i &lt; iterations; ++i) {\n            list.insert(i);\n        }\n    }\n    end = std::chrono::high_resolution_clock::now();\n    auto friendlyTime = std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;(end - start);\n\n    std::cout &lt;&lt; \"\u30ad\u30e3\u30c3\u30b7\u30e5\u975e\u52b9\u7387\u306a\u5b9f\u88c5: \" &lt;&lt; unfriendlyTime.count() &lt;&lt; \"ms\\n\";\n    std::cout &lt;&lt; \"\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u5b9f\u88c5: \" &lt;&lt; friendlyTime.count() &lt;&lt; \"ms\\n\";\n}<\/pre>\n\n\n\n<p><strong>2. \u30c7\u30fc\u30bf\u914d\u7f6e\u306e\u6700\u9069\u5316<\/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=\"\">\/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u8003\u616e\u306e\u69cb\u9020\u4f53\u8a2d\u8a08\nstruct CacheOptimizedStruct {\n    \/\/ \u983b\u7e41\u306b\u30a2\u30af\u30bb\u30b9\u3055\u308c\u308b\u30e1\u30f3\u30d0\u30fc\u3092\u30b0\u30eb\u30fc\u30d7\u5316\n    struct HotData {\n        int frequently_accessed_1;\n        int frequently_accessed_2;\n        double frequently_accessed_3;\n    } hot;\n\n    \/\/ \u3081\u3063\u305f\u306b\u30a2\u30af\u30bb\u30b9\u3055\u308c\u306a\u3044\u30e1\u30f3\u30d0\u30fc\u3092\u5206\u96e2\n    struct ColdData {\n        char rarely_accessed_1[1000];\n        int rarely_accessed_2;\n    } cold;\n};\n\n\/\/ SIMD\u64cd\u4f5c\u306e\u305f\u3081\u306e\u914d\u5217\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\nalignas(32) float aligned_array[8];  \/\/ AVX\u7528\u306b32\u30d0\u30a4\u30c8\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u30e1\u30e2\u30ea\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u306e\u52b9\u7387\u3068SIMD\u64cd\u4f5c\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u5236\u5fa1<\/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;memory&gt;\n\n\/\/ \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u6307\u5b9a\u306e\u69cb\u9020\u4f53\nstruct alignas(64) AlignedStruct {\n    double x, y, z, w;  \/\/ 32\u30d0\u30a4\u30c8\n    int data[8];        \/\/ 32\u30d0\u30a4\u30c8\n};\n\n\/\/ \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u5236\u5fa1\ntemplate&lt;typename T, size_t Alignment&gt;\nclass AlignedAllocator {\npublic:\n    using value_type = T;\n\n    T* allocate(size_t n) {\n        if (void* ptr = std::aligned_alloc(Alignment, n * sizeof(T))) {\n            return static_cast&lt;T*&gt;(ptr);\n        }\n        throw std::bad_alloc();\n    }\n\n    void deallocate(T* ptr, size_t) {\n        std::free(ptr);\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nstd::vector&lt;double, AlignedAllocator&lt;double, 32&gt;&gt; aligned_vector;<\/pre>\n\n\n\n<p><strong>2. SIMD\u6700\u9069\u5316<\/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;immintrin.h&gt;  \/\/ AVX\u547d\u4ee4\u7528\n\nclass SIMDOptimized {\nprivate:\n    alignas(32) float data[8];\n\npublic:\n    void vectorAdd(const float* a, const float* b) {\n        __m256 va = _mm256_load_ps(a);\n        __m256 vb = _mm256_load_ps(b);\n        __m256 result = _mm256_add_ps(va, vb);\n        _mm256_store_ps(data, result);\n    }\n};\n\n\/\/ \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u30c1\u30a7\u30c3\u30af\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\ntemplate&lt;typename T&gt;\nbool isAligned(const void* ptr, size_t alignment) {\n    return reinterpret_cast&lt;std::uintptr_t&gt;(ptr) % alignment == 0;\n}<\/pre>\n\n\n\n<p><strong>3. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/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 PerformanceOptimizer {\nprivate:\n    static constexpr size_t CacheLineSize = 64;\n    std::vector&lt;std::byte, AlignedAllocator&lt;std::byte, CacheLineSize&gt;&gt; buffer;\n\npublic:\n    \/\/ \u30d1\u30c7\u30a3\u30f3\u30b0\u3092\u8003\u616e\u3057\u305f\u30c7\u30fc\u30bf\u30ec\u30a4\u30a2\u30a6\u30c8\n    template&lt;typename T&gt;\n    struct PaddedData {\n        T data;\n        std::byte padding[CacheLineSize - (sizeof(T) % CacheLineSize)];\n    };\n\n    \/\/ \u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3092\u6d3b\u7528\u3057\u305f\u30a2\u30af\u30bb\u30b9\n    template&lt;typename T&gt;\n    void prefetchData(const T* ptr, size_t count) {\n        for (size_t i = 0; i &lt; count; ++i) {\n            __builtin_prefetch(&amp;ptr[i], 0, 3);\n        }\n    }\n\n    \/\/ \u30d5\u30a9\u30fc\u30eb\u30b9\u30b7\u30a7\u30a2\u30ea\u30f3\u30b0\u9632\u6b62\n    template&lt;typename T&gt;\n    class ThreadSafeCounter {\n        alignas(CacheLineSize) std::atomic&lt;T&gt; counter;\n    };\n};<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u6700\u9069\u5316<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u306e\u9023\u7d9a\u6027\u3092\u7dad\u6301<\/li>\n\n\n\n<li>\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u5883\u754c\u306e\u8003\u616e<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SIMD\u64cd\u4f5c\u306b\u9069\u3057\u305f\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u5883\u754c\u3067\u306e\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8<\/li>\n\n\n\n<li>\u30d1\u30c7\u30a3\u30f3\u30b0\u306e\u9069\u5207\u306a\u4f7f\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u69cb\u9020\u8a2d\u8a08<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u3068\u30b3\u30fc\u30eb\u30c9\u30c7\u30fc\u30bf\u306e\u5206\u96e2<\/li>\n\n\n\n<li>\u30d5\u30a9\u30fc\u30eb\u30b9\u30b7\u30a7\u30a2\u30ea\u30f3\u30b0\u306e\u9632\u6b62<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u30d1\u30bf\u30fc\u30f3\u306e\u6700\u9069\u5316<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u3068\u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5b9f\u73fe\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-1747","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\/1747","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=1747"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1747\/revisions"}],"predecessor-version":[{"id":1750,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1747\/revisions\/1750"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}