{"id":2059,"date":"2025-03-24T08:48:26","date_gmt":"2025-03-23T23:48:26","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2059"},"modified":"2025-03-24T08:48:51","modified_gmt":"2025-03-23T23:48:51","slug":"%e3%80%90%e4%bf%9d%e5%ad%98%e7%89%88%e3%80%91c%e3%82%b9%e3%83%9e%e3%83%bc%e3%83%88%e3%83%9d%e3%82%a4%e3%83%b3%e3%82%bf%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e3%83%a1%e3%83%a2","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2059","title":{"rendered":"\u3010\u4fdd\u5b58\u7248\u3011C++\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u64b2\u6ec5\u3078\u306e5\u3064\u306e\u5177\u4f53\u7b56"},"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\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3068\u306f\uff1f\u73fe\u4ee3\u306eC++\u958b\u767a\u306b\u304a\u3051\u308b\u91cd\u8981\u6027<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u5f93\u6765\u306e\u30dd\u30a4\u30f3\u30bf\u7ba1\u7406\u304c\u62b1\u3048\u308b3\u3064\u306e\u6df1\u523b\u306a\u554f\u984c<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306b\u3088\u308b\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u9032\u6b69\u7684\u30a2\u30d7\u30ed\u30fc\u30c1<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u57fa\u672c\uff1a\u7a2e\u985e\u3068\u4f7f\u3044\u9053<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">unique_ptr\u3067\u5b9f\u73fe\u3059\u308b\u6392\u4ed6\u7684\u6240\u6709\u6a29\u306e\u7ba1\u7406<\/a>      <\/li>      <li>        <a href=\"#i-5\">shared_ptr\u306b\u3088\u308b\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u65b9\u5f0f\u306e\u30e1\u30ea\u30c3\u30c8<\/a>      <\/li>      <li>        <a href=\"#i-6\">weak_ptr\u3067\u89e3\u6c7a\u3059\u308b\u5faa\u74b0\u53c2\u7167\u306e\u554f\u984c<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-7\">\u4f7f\u3044\u5206\u3051\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-8\">\u5b9f\u8df5\u7684\u306a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u5b9f\u88c5\u624b\u9806<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-9\">\u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u304b\u3089\u306e\u6bb5\u968e\u7684\u306a\u79fb\u884c\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-10\">STL\u30b3\u30f3\u30c6\u30ca\u3068\u52b9\u679c\u7684\u306a\u7d44\u307f\u5408\u308f\u305b\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-11\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u8a2d\u8a08<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u6d3b\u7528\u3057\u305f\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30d1\u30bf\u30fc\u30f3\u306b\u304a\u3051\u308b\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u6d3b\u7528<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u30d1\u30bf\u30fc\u30f3\u3067\u306e\u53c2\u7167\u7ba1\u7406\u306e\u6700\u9069\u5316<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-15\">\u3088\u304f\u3042\u308b\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u843d\u3068\u3057\u7a74\u3068\u5bfe\u7b56<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-16\">\u30c7\u30ea\u30fc\u30bf\u30fc\u6307\u5b9a\u6642\u306e\u6ce8\u610f\u70b9\u3068\u6700\u9069\u306a\u4f7f\u7528\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-17\">\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u306e\u5b89\u5168\u306a\u5229\u7528\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306e\u6700\u5c0f\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\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3068\u306f\uff1f\u73fe\u4ee3\u306eC++\u958b\u767a\u306b\u304a\u3051\u308b\u91cd\u8981\u6027<\/h2>\n\n\n\n<p>\u30e1\u30e2\u30ea\u7ba1\u7406\u306f\u73fe\u4ee3\u306eC++\u958b\u767a\u306b\u304a\u3044\u3066\u6700\u3082\u91cd\u8981\u306a\u8ab2\u984c\u306e\u4e00\u3064\u3067\u3059\u3002\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306f\u3001\u3053\u306e\u8ab2\u984c\u306b\u5bfe\u3059\u308b\u5f37\u529b\u306a\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u3001C++11\u4ee5\u964d\u3067\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4e00\u90e8\u3068\u3057\u3066\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u5f93\u6765\u306e\u30dd\u30a4\u30f3\u30bf\u7ba1\u7406\u304c\u62b1\u3048\u308b3\u3064\u306e\u6df1\u523b\u306a\u554f\u984c<\/h3>\n\n\n\n<p>\u5f93\u6765\u306e\u751f\u30dd\u30a4\u30f3\u30bf\u306b\u3088\u308b\u30e1\u30e2\u30ea\u7ba1\u7406\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6df1\u523b\u306a\u554f\u984c\u304c\u983b\u7e41\u306b\u767a\u751f\u3057\u3066\u3044\u307e\u3057\u305f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u5371\u967a\u6027<\/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=\"\">void riskyFunction() {\n    MyClass* ptr = new MyClass();  \/\/ \u30e1\u30e2\u30ea\u78ba\u4fdd\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406\n    if (someCondition) {\n        return;  \/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\uff01delete\u304c\u547c\u3070\u308c\u306a\u3044\n    }\n    delete ptr;  \/\/ \u6b63\u5e38\u7d4c\u8def\u3067\u306e\u307f\u89e3\u653e\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u4e8c\u91cd\u89e3\u653e\u306e\u53ef\u80fd\u6027<\/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=\"\">void problematicFunction() {\n    MyClass* ptr = new MyClass();\n    \/\/ \u51e6\u7406\n    delete ptr;\n    \/\/ ... \u4ed6\u306e\u51e6\u7406 ...\n    delete ptr;  \/\/ \u5371\u967a\u306a\u4e8c\u91cd\u89e3\u653e\uff01\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u4f8b\u5916\u767a\u751f\u6642\u306e\u30ea\u30bd\u30fc\u30b9\u6f0f\u308c<\/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=\"\">void leakyFunction() {\n    MyClass* ptr = new MyClass();\n    \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u51e6\u7406\n    riskyOperation();  \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u3068\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\n    delete ptr;\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306b\u3088\u308b\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u9032\u6b69\u7684\u30a2\u30d7\u30ed\u30fc\u30c1<\/h3>\n\n\n\n<p>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306f\u3001\u3053\u308c\u3089\u306e\u554f\u984c\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3067\u89e3\u6c7a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u81ea\u52d5\u7684\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">void safeFunction() {\n    std::unique_ptr&lt;MyClass&gt; ptr = std::make_unique&lt;MyClass&gt;();\n    \/\/ \u95a2\u6570\u3092\u629c\u3051\u308b\u3068\u81ea\u52d5\u7684\u306b\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u547c\u3070\u308c\u308b\n    \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3057\u3066\u3082\u5b89\u5168\n}  \/\/ \u3053\u3053\u3067\u30e1\u30e2\u30ea\u304c\u81ea\u52d5\u89e3\u653e<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6240\u6709\u6a29\u306e\u660e\u793a\u7684\u306a\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">std::unique_ptr&lt;MyClass&gt; createObject() {\n    return std::make_unique&lt;MyClass&gt;();  \/\/ \u6240\u6709\u6a29\u306e\u79fb\u8ee2\u304c\u660e\u78ba\n}\n\nvoid useObject() {\n    auto ptr = createObject();  \/\/ \u6240\u6709\u6a29\u306e\u7372\u5f97\n    ptr-&gt;doSomething();\n}  \/\/ \u81ea\u52d5\u7684\u306b\u89e3\u653e<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u5b89\u5168\u306a\u5171\u6709\u30ea\u30bd\u30fc\u30b9\u306e\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">std::shared_ptr&lt;MyClass&gt; sharedResource = std::make_shared&lt;MyClass&gt;();\n{\n    auto ptr2 = sharedResource;  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u5897\u52a0\n    \/\/ ptr2\u306e\u4f7f\u7528\n}  \/\/ ptr2\u306e\u30b9\u30b3\u30fc\u30d7\u3092\u629c\u3051\u308b\u3068\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u6e1b\u5c11\n\n\/\/ \u3059\u3079\u3066\u306e\u53c2\u7167\u304c\u6d88\u3048\u305f\u6642\u70b9\u3067\u81ea\u52d5\u7684\u306b\u89e3\u653e<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306f\u4ee5\u4e0b\u306e\u5229\u70b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>RAII\u539f\u5247\u306e\u9075\u5b88<\/strong>: \u30ea\u30bd\u30fc\u30b9\u306e\u78ba\u4fdd\u3068\u89e3\u653e\u304c\u78ba\u5b9f\u306b\u884c\u308f\u308c\u308b<\/li>\n\n\n\n<li><strong>\u4f8b\u5916\u5b89\u5168\u6027\u306e\u5411\u4e0a<\/strong>: \u4f8b\u5916\u767a\u751f\u6642\u3067\u3082\u30ea\u30bd\u30fc\u30b9\u30ea\u30fc\u30af\u3092\u9632\u6b62<\/li>\n\n\n\n<li><strong>\u30b3\u30fc\u30c9\u54c1\u8cea\u306e\u6539\u5584<\/strong>: \u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u30d0\u30b0\u3092\u5927\u5e45\u306b\u524a\u6e1b<\/li>\n\n\n\n<li><strong>\u4fdd\u5b88\u6027\u306e\u5411\u4e0a<\/strong>: \u6240\u6709\u6a29\u306e\u79fb\u8ee2\u304c\u660e\u793a\u7684\u3067\u8ffd\u8de1\u3057\u3084\u3059\u3044<\/li>\n<\/ul>\n\n\n\n<p>\u73fe\u4ee3\u306eC++\u958b\u767a\u3067\u306f\u3001\u751f\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\u306f\u6975\u529b\u907f\u3051\u3001\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u7a4d\u6975\u7684\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u5927\u898f\u6a21\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3084\u9577\u671f\u7684\u306a\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u5fc5\u8981\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3067\u306f\u3001\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u63a1\u7528\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u57fa\u672c\uff1a\u7a2e\u985e\u3068\u4f7f\u3044\u9053<\/h2>\n\n\n\n<p>C++11\u4ee5\u964d\u3067\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u4e3b\u8981\u306a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306b\u306f\u3001\u305d\u308c\u305e\u308c\u7279\u5fb4\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u5404\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u7279\u6027\u3068\u9069\u5207\u306a\u4f7f\u7528\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">unique_ptr\u3067\u5b9f\u73fe\u3059\u308b\u6392\u4ed6\u7684\u6240\u6709\u6a29\u306e\u7ba1\u7406<\/h3>\n\n\n\n<p><code>std::unique_ptr<\/code>\u306f\u3001\u5358\u4e00\u306e\u6240\u6709\u8005\u306b\u3088\u308b\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u3092\u5b9f\u73fe\u3059\u308b\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5<\/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=\"\">\/\/ \u63a8\u5968\u3055\u308c\u308b\u751f\u6210\u65b9\u6cd5\nstd::unique_ptr&lt;MyClass&gt; ptr = std::make_unique&lt;MyClass&gt;();\n\n\/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306b\u5f15\u6570\u3092\u6e21\u3059\u5834\u5408\nauto ptr2 = std::make_unique&lt;MyClass&gt;(\"param1\", 42);\n\n\/\/ \u914d\u5217\u306e\u5834\u5408\nauto arr = std::make_unique&lt;int[]&gt;(10);  \/\/ 10\u8981\u7d20\u306e\u914d\u5217<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6240\u6709\u6a29\u306e\u79fb\u8ee2<\/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=\"\">std::unique_ptr&lt;MyClass&gt; createInstance() {\n    return std::make_unique&lt;MyClass&gt;();  \/\/ \u81ea\u52d5\u7684\u306b\u6240\u6709\u6a29\u304c\u79fb\u8ee2\n}\n\nvoid processInstance() {\n    auto ptr = createInstance();  \/\/ \u6240\u6709\u6a29\u3092\u53d7\u3051\u53d6\u308b\n\n    \/\/ \u660e\u793a\u7684\u306a\u6240\u6709\u6a29\u306e\u79fb\u52d5\n    auto newOwner = std::move(ptr);  \/\/ ptr\u306f nullptr \u306b\u306a\u308b\n\n    \/\/ \u30b3\u30d4\u30fc\u306f\u4e0d\u53ef\u80fd\n    \/\/ auto copy = ptr;  \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">shared_ptr\u306b\u3088\u308b\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u65b9\u5f0f\u306e\u30e1\u30ea\u30c3\u30c8<\/h3>\n\n\n\n<p><code>std::shared_ptr<\/code>\u306f\u3001\u8907\u6570\u306e\u30dd\u30a4\u30f3\u30bf\u3067\u540c\u3058\u30ea\u30bd\u30fc\u30b9\u3092\u5171\u6709\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5<\/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=\"\">\/\/ \u63a8\u5968\u3055\u308c\u308b\u751f\u6210\u65b9\u6cd5\nauto shared = std::make_shared&lt;MyClass&gt;();\n\n\/\/ \u5171\u6709\u306e\u5b9f\u73fe\nauto ptr1 = shared;  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8: 2\nauto ptr2 = shared;  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8: 3\n\n\/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u306e\u78ba\u8a8d\nstd::cout &lt;&lt; \"\u53c2\u7167\u6570: \" &lt;&lt; shared.use_count() &lt;&lt; std::endl;<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30b9\u30ec\u30c3\u30c9\u5b89\u5168\u6027<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class SharedResource {\n    std::shared_ptr&lt;MyClass&gt; resource;\n    std::mutex mutex;\npublic:\n    void updateResource() {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        if (!resource) {\n            resource = std::make_shared&lt;MyClass&gt;();\n        }\n        resource-&gt;update();\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">weak_ptr\u3067\u89e3\u6c7a\u3059\u308b\u5faa\u74b0\u53c2\u7167\u306e\u554f\u984c<\/h3>\n\n\n\n<p><code>std::weak_ptr<\/code>\u306f\u3001<code>shared_ptr<\/code>\u306b\u3088\u308b\u5faa\u74b0\u53c2\u7167\u3092\u9632\u3050\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5faa\u74b0\u53c2\u7167\u306e\u4f8b\u3068\u89e3\u6c7a\u65b9\u6cd5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class Node {\n    std::shared_ptr&lt;Node&gt; next;    \/\/ \u5f37\u53c2\u7167\n    std::weak_ptr&lt;Node&gt; previous;  \/\/ \u5f31\u53c2\u7167\npublic:\n    void connect(const std::shared_ptr&lt;Node&gt;&amp; other) {\n        next = other;\n        other-&gt;previous = std::weak_ptr&lt;Node&gt;(shared_from_this());\n    }\n\n    void useNext() {\n        if (auto ptr = next) {  \/\/ \u5f37\u53c2\u7167\u306f\u76f4\u63a5\u4f7f\u7528\u53ef\u80fd\n            ptr-&gt;doSomething();\n        }\n    }\n\n    void usePrevious() {\n        if (auto ptr = previous.lock()) {  \/\/ \u5f31\u53c2\u7167\u306f lock() \u3067\u78ba\u8a8d\n            ptr-&gt;doSomething();\n        }\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u6d3b\u7528\u4f8b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class Cache {\n    std::unordered_map&lt;std::string, std::weak_ptr&lt;Resource&gt;&gt; cache;\npublic:\n    std::shared_ptr&lt;Resource&gt; getResource(const std::string&amp; key) {\n        auto it = cache.find(key);\n        if (it != cache.end()) {\n            if (auto ptr = it-&gt;second.lock()) {\n                return ptr;  \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\n            }\n            cache.erase(it);  \/\/ \u671f\u9650\u5207\u308c\u30a8\u30f3\u30c8\u30ea\u306e\u524a\u9664\n        }\n        \/\/ \u65b0\u3057\u3044\u30ea\u30bd\u30fc\u30b9\u306e\u4f5c\u6210\n        auto newResource = std::make_shared&lt;Resource&gt;(key);\n        cache[key] = newResource;\n        return newResource;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u4f7f\u3044\u5206\u3051\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h3>\n\n\n\n<p>\u5404\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\u65b9\u91dd\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>std::unique_ptr<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u9078\u629e\u80a2\u3068\u3057\u3066\u8003\u3048\u308b<\/li>\n\n\n\n<li>\u5358\u4e00\u306e\u6240\u6709\u6a29\u304c\u660e\u78ba\u306a\u5834\u5408<\/li>\n\n\n\n<li>RAII\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30d5\u30a1\u30af\u30c8\u30ea\u95a2\u6570\u306e\u623b\u308a\u5024<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>std::shared_ptr<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u6570\u306e\u7b87\u6240\u3067\u30ea\u30bd\u30fc\u30b9\u3092\u5171\u6709\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u6240\u6709\u6a29\u306e\u5171\u6709\u304c\u8a2d\u8a08\u4e0a\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>std::weak_ptr<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5faa\u74b0\u53c2\u7167\u306e\u9632\u6b62<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u306a\u3044\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-8\">\u5b9f\u8df5\u7684\u306a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u5b9f\u88c5\u624b\u9806<\/h2>\n\n\n\n<p>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5c0e\u5165\u3059\u308b\u969b\u306e\u5177\u4f53\u7684\u306a\u624b\u9806\u3068\u3001\u52b9\u679c\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u304b\u3089\u306e\u6bb5\u968e\u7684\u306a\u79fb\u884c\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u3092\u5b89\u5168\u306b\u30e2\u30c0\u30f3\u306a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u30d9\u30fc\u30b9\u306e\u30b3\u30fc\u30c9\u306b\u79fb\u884c\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u304c\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u65e2\u5b58\u30b3\u30fc\u30c9\u306e\u5206\u6790\u3068\u79fb\u884c\u8a08\u753b<\/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=\"\">\/\/ \u5909\u66f4\u524d\uff1a\u751f\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3057\u305f\u5f93\u6765\u306e\u30b3\u30fc\u30c9\nclass ResourceManager {\n    Resource* resource;\npublic:\n    ResourceManager() : resource(new Resource()) {}\n    ~ResourceManager() { delete resource; }\n    \/\/ ... \u305d\u306e\u4ed6\u306e\u30e1\u30f3\u30d0\u30fc\n};\n\n\/\/ \u5909\u66f4\u5f8c\uff1a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3057\u305f\u30e2\u30c0\u30f3\u306a\u5b9f\u88c5\nclass ResourceManager {\n    std::unique_ptr&lt;Resource&gt; resource;\npublic:\n    ResourceManager() : resource(std::make_unique&lt;Resource&gt;()) {}\n    \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u81ea\u52d5\u751f\u6210\u3067 OK\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6bb5\u968e\u7684\u306a\u79fb\u884c\u306e\u305f\u3081\u306e\u30e9\u30c3\u30d1\u30fc\u4f5c\u6210<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u3068\u306e\u4e92\u63db\u6027\u3092\u4fdd\u3064\u305f\u3081\u306e\u30e9\u30c3\u30d1\u30fc\nclass SmartWrapper {\n    std::unique_ptr&lt;Resource&gt; smart_resource;\npublic:\n    \/\/ \u5f93\u6765\u306e\u751f\u30dd\u30a4\u30f3\u30bf\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u306e\u4e92\u63db\u6027\u7dad\u6301\n    Resource* get_raw() const { return smart_resource.get(); }\n\n    \/\/ \u65b0\u3057\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\n    std::shared_ptr&lt;Resource&gt; get_shared() {\n        return std::shared_ptr&lt;Resource&gt;(smart_resource.get());\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">STL\u30b3\u30f3\u30c6\u30ca\u3068\u52b9\u679c\u7684\u306a\u7d44\u307f\u5408\u308f\u305b\u65b9<\/h3>\n\n\n\n<p>STL\u30b3\u30f3\u30c6\u30ca\u3068\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u969b\u306e\u6700\u9069\u306a\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>vector\u3067\u306e\u4f7f\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30dd\u30a4\u30f3\u30bf\u306e\u30b3\u30f3\u30c6\u30ca\nstd::vector&lt;std::unique_ptr&lt;MyClass&gt;&gt; objects;\n\n\/\/ \u8981\u7d20\u306e\u8ffd\u52a0\nobjects.push_back(std::make_unique&lt;MyClass&gt;());\n\n\/\/ \u8981\u7d20\u306e\u79fb\u52d5\nauto ptr = std::make_unique&lt;MyClass&gt;();\nobjects.push_back(std::move(ptr));\n\n\/\/ \u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\nfor (const auto&amp; obj : objects) {\n    obj-&gt;doSomething();\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>map\u3067\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u4fdd\u6301\nstd::map&lt;std::string, std::shared_ptr&lt;Resource&gt;&gt; resource_map;\n\n\/\/ \u30ea\u30bd\u30fc\u30b9\u306e\u8ffd\u52a0\u3068\u5171\u6709\nauto resource = std::make_shared&lt;Resource&gt;();\nresource_map[\"key1\"] = resource;\nresource_map[\"key2\"] = resource;  \/\/ \u540c\u3058\u30ea\u30bd\u30fc\u30b9\u3092\u5171\u6709\n\n\/\/ \u5b89\u5168\u306a\u30ea\u30bd\u30fc\u30b9\u53d6\u5f97\nif (auto it = resource_map.find(\"key1\"); it != resource_map.end()) {\n    it-&gt;second-&gt;use();\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u8a2d\u8a08<\/h3>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class OptimizedManager {\n    \/\/ \u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\n    using CustomAllocator = MyCustomAllocator&lt;MyClass&gt;;\n    std::unique_ptr&lt;MyClass, CustomAllocator::Deleter&gt; resource;\n\npublic:\n    OptimizedManager() {\n        \/\/ \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u751f\u6210\n        CustomAllocator allocator;\n        resource.reset(allocator.allocate(1), allocator.deleter());\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30ea\u30bd\u30fc\u30b9\u30d7\u30fc\u30eb\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class ResourcePool {\n    std::vector&lt;std::unique_ptr&lt;Resource&gt;&gt; pool;\n    std::queue&lt;Resource*&gt; available;\n    std::mutex mutex;\n\npublic:\n    std::shared_ptr&lt;Resource&gt; acquire() {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        if (available.empty()) {\n            \/\/ \u65b0\u3057\u3044\u30ea\u30bd\u30fc\u30b9\u306e\u4f5c\u6210\n            pool.push_back(std::make_unique&lt;Resource&gt;());\n            available.push(pool.back().get());\n        }\n\n        Resource* resource = available.front();\n        available.pop();\n\n        \/\/ \u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u3067\u30d7\u30fc\u30eb\u306b\u8fd4\u5374\n        return std::shared_ptr&lt;Resource&gt;(resource, \n            [this](Resource* r) {\n                std::lock_guard&lt;std::mutex&gt; lock(mutex);\n                available.push(r);\n            });\n    }\n};<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>make_unique<\/code>\/<code>make_shared<\/code>\u306e\u7a4d\u6975\u7684\u306a\u4f7f\u7528<\/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=\"\">  \/\/ \u975e\u52b9\u7387\u7684\u306a\u5b9f\u88c5\n  std::shared_ptr&lt;MyClass&gt; ptr(new MyClass());\n\n  \/\/ \u52b9\u7387\u7684\u306a\u5b9f\u88c5\n  auto ptr = std::make_shared&lt;MyClass&gt;();  \/\/ \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d6\u30ed\u30c3\u30af\u30921\u56de\u306e\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u78ba\u4fdd<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e0\u30fc\u30d6\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u306e\u6d3b\u7528<\/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=\"\">  std::unique_ptr&lt;MyClass&gt; createAndProcess() {\n      auto ptr = std::make_unique&lt;MyClass&gt;();\n      ptr-&gt;process();\n      return ptr;  \/\/ \u30e0\u30fc\u30d6\u306b\u3088\u308b\u52b9\u7387\u7684\u306a\u8fd4\u5374\n  }<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\u3068\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u304c\u9ad8\u304f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u826f\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\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u6d3b\u7528\u3057\u305f\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<p>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4e00\u822c\u7684\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u3088\u308a\u5b89\u5168\u304b\u3064\u52b9\u7387\u7684\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u4ee3\u8868\u7684\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306b\u304a\u3051\u308b\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u6d3b\u7528\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30d1\u30bf\u30fc\u30f3\u306b\u304a\u3051\u308b\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u6d3b\u7528<\/h3>\n\n\n\n<p>\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u751f\u6210\u30ed\u30b8\u30c3\u30af\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306e\u5b89\u5168\u6027\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30af\u30e9\u30b9\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u88fd\u54c1\u306e\u62bd\u8c61\u57fa\u5e95\u30af\u30e9\u30b9\nclass Product {\npublic:\n    virtual ~Product() = default;\n    virtual void operation() = 0;\n};\n\n\/\/ \u5177\u4f53\u7684\u306a\u88fd\u54c1\u30af\u30e9\u30b9\nclass ConcreteProductA : public Product {\npublic:\n    void operation() override {\n        \/\/ \u88fd\u54c1\u56fa\u6709\u306e\u51e6\u7406\n    }\n};\n\n\/\/ \u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30af\u30e9\u30b9\nclass Factory {\npublic:\n    \/\/ unique_ptr\u3092\u8fd4\u3059\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30e1\u30bd\u30c3\u30c9\n    static std::unique_ptr&lt;Product&gt; createProduct(const std::string&amp; type) {\n        if (type == \"A\") {\n            return std::make_unique&lt;ConcreteProductA&gt;();\n        }\n        \/\/ \u4ed6\u306e\u88fd\u54c1\u30bf\u30a4\u30d7\u306e\u51e6\u7406...\n        return nullptr;\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u62bd\u8c61\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u3067\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class AbstractFactory {\npublic:\n    virtual std::unique_ptr&lt;Product&gt; createProductA() = 0;\n    virtual std::unique_ptr&lt;Product&gt; createProductB() = 0;\n    virtual ~AbstractFactory() = default;\n};\n\nclass ConcreteFactory1 : public AbstractFactory {\npublic:\n    std::unique_ptr&lt;Product&gt; createProductA() override {\n        return std::make_unique&lt;ConcreteProductA&gt;();\n    }\n\n    std::unique_ptr&lt;Product&gt; createProductB() override {\n        return std::make_unique&lt;ConcreteProductB&gt;();\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u30d1\u30bf\u30fc\u30f3\u3067\u306e\u53c2\u7167\u7ba1\u7406\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n<p>\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u30d1\u30bf\u30fc\u30f3\u3067\u306f\u3001weak_ptr\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5faa\u74b0\u53c2\u7167\u3092\u9632\u304e\u306a\u304c\u3089\u5b89\u5168\u306a\u53c2\u7167\u7ba1\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class Observer {\npublic:\n    virtual ~Observer() = default;\n    virtual void update(const std::string&amp; message) = 0;\n};\n\nclass Subject {\n    std::vector&lt;std::weak_ptr&lt;Observer&gt;&gt; observers;\n\npublic:\n    void addObserver(std::shared_ptr&lt;Observer&gt; observer) {\n        observers.push_back(observer);\n    }\n\n    void notify(const std::string&amp; message) {\n        \/\/ \u671f\u9650\u5207\u308c\u306e\u53c2\u7167\u3092\u81ea\u52d5\u7684\u306b\u524a\u9664\u3057\u306a\u304c\u3089\u901a\u77e5\n        observers.erase(\n            std::remove_if(observers.begin(), observers.end(),\n                [&amp;message](const std::weak_ptr&lt;Observer&gt;&amp; weakObs) {\n                    if (auto obs = weakObs.lock()) {\n                        obs-&gt;update(message);\n                        return false;  \/\/ \u6709\u52b9\u306a\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u3092\u7dad\u6301\n                    }\n                    return true;   \/\/ \u7121\u52b9\u306a\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u3092\u524a\u9664\n                }\n            ),\n            observers.end()\n        );\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30a4\u30d9\u30f3\u30c8\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u6d3b\u7528\u4f8b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class EventSystem {\n    using EventHandler = std::function&lt;void(const Event&amp;)&gt;;\n    std::unordered_map&lt;std::string, std::vector&lt;std::weak_ptr&lt;EventHandler&gt;&gt;&gt; handlers;\n\npublic:\n    void registerHandler(const std::string&amp; eventType,\n                        std::shared_ptr&lt;EventHandler&gt; handler) {\n        handlers[eventType].push_back(handler);\n    }\n\n    void fireEvent(const std::string&amp; eventType, const Event&amp; event) {\n        auto&amp; eventHandlers = handlers[eventType];\n\n        \/\/ \u7121\u52b9\u306a\u30cf\u30f3\u30c9\u30e9\u3092\u524a\u9664\u3057\u306a\u304c\u3089\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u706b\n        eventHandlers.erase(\n            std::remove_if(eventHandlers.begin(), eventHandlers.end(),\n                [&amp;event](const std::weak_ptr&lt;EventHandler&gt;&amp; weakHandler) {\n                    if (auto handler = weakHandler.lock()) {\n                        (*handler)(event);\n                        return false;\n                    }\n                    return true;\n                }\n            ),\n            eventHandlers.end()\n        );\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6240\u6709\u6a29\u306e\u660e\u78ba\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>unique_ptr<\/code>: \u5358\u4e00\u306e\u6240\u6709\u8005\u304c\u5fc5\u8981\u306a\u5834\u5408\uff08\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u306a\u3069\uff09<\/li>\n\n\n\n<li><code>shared_ptr<\/code>: \u8907\u6570\u306e\u5834\u6240\u3067\u5171\u6709\u304c\u5fc5\u8981\u306a\u5834\u5408\uff08\u5171\u6709\u30ea\u30bd\u30fc\u30b9\u306a\u3069\uff09<\/li>\n\n\n\n<li><code>weak_ptr<\/code>: \u5faa\u74b0\u53c2\u7167\u3092\u9632\u3050\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\uff08\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u30d1\u30bf\u30fc\u30f3\u306a\u3069\uff09<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u8003\u616e<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0d\u5fc5\u8981\u306a<code>shared_ptr<\/code>\u306e\u4f7f\u7528\u3092\u907f\u3051\u308b<\/li>\n\n\n\n<li><code>weak_ptr<\/code>\u306b\u3088\u308b\u53c2\u7167\u306e\u81ea\u52d5\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3092\u6d3b\u7528<\/li>\n\n\n\n<li>\u30e0\u30fc\u30d6\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u3092\u7a4d\u6975\u7684\u306b\u6d3b\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4f8b\u5916\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306b\u3088\u308b\u81ea\u52d5\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u3092\u6d3b\u7528<\/li>\n\n\n\n<li>RAII\u30d1\u30bf\u30fc\u30f3\u3068\u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n\n\n\n<li>\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u5207\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u304c\u9ad8\u304f\u3001\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u306a\u3044\u5805\u7262\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">\u3088\u304f\u3042\u308b\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u843d\u3068\u3057\u7a74\u3068\u5bfe\u7b56<\/h2>\n\n\n\n<p>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306f\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u304c\u3001\u9069\u5207\u306b\u4f7f\u7528\u3057\u306a\u3044\u3068\u4e88\u671f\u305b\u306c\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u3088\u304f\u3042\u308b\u843d\u3068\u3057\u7a74\u3068\u305d\u306e\u5bfe\u7b56\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u30c7\u30ea\u30fc\u30bf\u30fc\u6307\u5b9a\u6642\u306e\u6ce8\u610f\u70b9\u3068\u6700\u9069\u306a\u4f7f\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u30fc\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e9\u30e0\u30c0\u5f0f\u306b\u3088\u308b\u30c7\u30ea\u30fc\u30bf\u30fc\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5371\u967a\u306a\u5b9f\u88c5\nclass FileManager {\n    std::unique_ptr&lt;FILE, void(*)(FILE*)&gt; file{\n        fopen(\"test.txt\", \"r\"), \n        [](FILE* f) { fclose(f); }  \/\/ \u30e9\u30e0\u30c0\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u4e0d\u53ef\n    };\n};\n\n\/\/ \u5b89\u5168\u306a\u5b9f\u88c5\nclass FileManager {\n    struct FileDeleter {\n        void operator()(FILE* f) const {\n            if (f) fclose(f);\n        }\n    };\n    std::unique_ptr&lt;FILE, FileDeleter&gt; file{fopen(\"test.txt\", \"r\")};\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u5171\u6709\u30ea\u30bd\u30fc\u30b9\u306e\u30ab\u30b9\u30bf\u30e0\u89e3\u653e<\/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=\"\">\/\/ \u30ea\u30bd\u30fc\u30b9\u30d7\u30fc\u30eb\u7528\u306e\u30c7\u30ea\u30fc\u30bf\u30fc\nclass ResourcePool {\n    std::queue&lt;Resource*&gt; available;\n    std::mutex mutex;\n\npublic:\n    auto acquireResource() {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        auto resource = available.front();\n        available.pop();\n\n        return std::shared_ptr&lt;Resource&gt;(resource,\n            [this](Resource* r) {\n                std::lock_guard&lt;std::mutex&gt; lock(mutex);\n                r-&gt;reset();  \/\/ \u30ea\u30bd\u30fc\u30b9\u306e\u72b6\u614b\u3092\u30ea\u30bb\u30c3\u30c8\n                available.push(r);  \/\/ \u30d7\u30fc\u30eb\u306b\u8fd4\u5374\n            });\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u306e\u5b89\u5168\u306a\u5229\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>shared_ptr\u306e\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u64cd\u4f5c\u306e\u4fdd\u8b77<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class ThreadSafeCache {\n    std::mutex mutex;\n    std::map&lt;std::string, std::shared_ptr&lt;Resource&gt;&gt; cache;\n\npublic:\n    std::shared_ptr&lt;Resource&gt; getResource(const std::string&amp; key) {\n        std::shared_ptr&lt;Resource&gt; result;\n        {\n            std::lock_guard&lt;std::mutex&gt; lock(mutex);\n            result = cache[key];  \/\/ \u30de\u30c3\u30d7\u30a2\u30af\u30bb\u30b9\u3092\u4fdd\u8b77\n        }\n        return result;  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u306e\u5897\u52a0\u306f\u81ea\u52d5\u7684\u306b\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\n    }\n\n    void updateResource(const std::string&amp; key, std::shared_ptr&lt;Resource&gt; newResource) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        cache[key] = newResource;\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>weak_ptr\u306e\u5b89\u5168\u306a\u4f7f\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class EventListener {\n    std::weak_ptr&lt;EventSource&gt; source;\n\npublic:\n    void processEvents() {\n        \/\/ weak_ptr\u306elock()\u306f\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\n        if (auto ptr = source.lock()) {\n            ptr-&gt;processNextEvent();\n        } else {\n            \/\/ \u30bd\u30fc\u30b9\u304c\u65e2\u306b\u89e3\u653e\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306e\u51e6\u7406\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306e\u6700\u5c0f\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class PerformanceOptimizedClass {\n    \/\/ \u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u6e1b\u3089\u3059\u305f\u3081\u306e\u5de5\u592b\n    std::shared_ptr&lt;LargeObject&gt; shared;\n\npublic:\n    void initialize() {\n        \/\/ make_shared\u3092\u4f7f\u7528\u3057\u30661\u56de\u306e\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u6e08\u307e\u305b\u308b\n        shared = std::make_shared&lt;LargeObject&gt;();\n\n        \/\/ \u975e\u63a8\u5968: 2\u56de\u306e\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u767a\u751f\n        \/\/ shared = std::shared_ptr&lt;LargeObject&gt;(new LargeObject());\n    }\n\n    void process() {\n        \/\/ \u30ed\u30fc\u30ab\u30eb\u3067\u306e\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u64cd\u4f5c\u3092\u6700\u5c0f\u9650\u306b\n        auto local = shared;  \/\/ 1\u56de\u306e\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u5897\u52a0\n        for (int i = 0; i &lt; 1000; ++i) {\n            local-&gt;process(i);  \/\/ shared-&gt;process(i) \u3088\u308a\u52b9\u7387\u7684\n        }\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u9078\u629e\u57fa\u6e96<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class OptimizedDesign {\n    \/\/ \u5358\u4e00\u6240\u6709\u6a29\u306e\u5834\u5408\u306funique_ptr\u3092\u4f7f\u7528\n    std::unique_ptr&lt;Resource&gt; exclusive;\n\n    \/\/ \u5171\u6709\u304c\u5fc5\u8981\u306a\u5834\u5408\u306e\u307fshared_ptr\u3092\u4f7f\u7528\n    std::shared_ptr&lt;SharedResource&gt; shared;\n\n    \/\/ \u5faa\u74b0\u53c2\u7167\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306fweak_ptr\u3092\u4f7f\u7528\n    std::weak_ptr&lt;Observer&gt; observer;\n\npublic:\n    void performOperation() {\n        \/\/ \u30ed\u30fc\u30ab\u30eb\u30b9\u30b3\u30fc\u30d7\u3067\u306e\u4e00\u6642\u7684\u306a\u4f7f\u7528\u306f\u751f\u30dd\u30a4\u30f3\u30bf\u3067\u5341\u5206\n        Resource* raw = exclusive.get();\n        raw-&gt;quickOperation();  \/\/ \u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u6700\u5c0f\u5316\n    }\n};<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\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><strong>\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>make_shared<\/code>\/<code>make_unique<\/code>\u306e\u4f7f\u7528<\/li>\n\n\n\n<li>\u4e0d\u5fc5\u8981\u306a\u4e00\u6642\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u56de\u907f<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u306e\u6d3b\u7528<\/li>\n<\/ul>\n\n\n\n<ol 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