{"id":2024,"date":"2025-03-24T08:48:32","date_gmt":"2025-03-23T23:48:32","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2024"},"modified":"2025-03-24T08:48:56","modified_gmt":"2025-03-23T23:48:56","slug":"c-delete%e3%82%92%e5%ae%8c%e5%85%a8%e3%83%9e%e3%82%b9%e3%82%bf%e3%83%bc%ef%bc%81%e3%83%a1%e3%83%a2%e3%83%aa%e3%83%aa%e3%83%bc%e3%82%af0%e3%82%92%e5%ae%9f%e7%8f%be%e3%81%99%e3%82%8b7%e3%81%a4","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2024","title":{"rendered":"C++ delete\u3092\u5b8c\u5168\u30de\u30b9\u30bf\u30fc\uff01\u30e1\u30e2\u30ea\u30ea\u30fc\u30af0\u3092\u5b9f\u73fe\u3059\u308b7\u3064\u306e\u6975\u610f"},"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++\u306edelete\u304c\u5fc5\u8981\u306a\u7406\u7531\u3068\u57fa\u672c\u6982\u5ff5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u91cd\u8981\u6027\u3068delete\u306e\u5f79\u5272<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">new\u3068delete\u306e\u95a2\u4fc2\u6027\u3092\u7406\u89e3\u3059\u308b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">delete\u306e\u6b63\u3057\u3044\u4f7f\u3044\u65b9\u3068\u6ce8\u610f\u70b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u57fa\u672c\u7684\u306adelete\u306e\u69cb\u6587\u3068\u4f7f\u7528\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-5\">delete\u3068delete[]\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-6\">\u4e8c\u91cd\u89e3\u653e\u3092\u9632\u3050\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-7\">\u3088\u304f\u3042\u308bdelete\u306e\u554f\u984c\u3068\u5bfe\u51e6\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-8\">\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u539f\u56e0\u3068\u767a\u898b\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-9\">dangling pointer\u3092\u9632\u3050\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-10\">\u7d99\u627f\u968e\u5c64\u3067\u306e\u6b63\u3057\u3044delete\u4f7f\u7528\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-11\">\u30e2\u30c0\u30f3C++\u6642\u4ee3\u306e\u30e1\u30e2\u30ea\u7ba1\u7406\u624b\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-12\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306b\u3088\u308b\u81ea\u52d5\u30e1\u30e2\u30ea\u7ba1\u7406<\/a>      <\/li>      <li>        <a href=\"#i-13\">RAII\u539f\u5247\u306e\u5b9f\u8df5\u7684\u306a\u9069\u7528\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u306e\u5b9f\u88c5\u3068\u6d3b\u7528<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-15\">\u5b9f\u8df5\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u30d1\u30bf\u30fc\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-16\">\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u30af\u30e9\u30b9\u306e\u8a2d\u8a08\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-17\">\u4f8b\u5916\u5b89\u5168\u306adelete\u306e\u5b9f\u88c5\u624b\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u5927\u898f\u6a21\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u30e1\u30e2\u30ea\u7ba1\u7406\u6226\u7565<\/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++\u306edelete\u304c\u5fc5\u8981\u306a\u7406\u7531\u3068\u57fa\u672c\u6982\u5ff5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u91cd\u8981\u6027\u3068delete\u306e\u5f79\u5272<\/h3>\n\n\n\n<p>C++\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001\u30e1\u30e2\u30ea\u7ba1\u7406\u306f\u6700\u3082\u91cd\u8981\u306a\u8981\u7d20\u306e\u4e00\u3064\u3067\u3059\u3002\u9069\u5207\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u5b89\u5b9a\u6027\u3001\u305d\u3057\u3066\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u76f4\u63a5\u7684\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30e2\u30ea\u7ba1\u7406\u306b\u304a\u3044\u3066\u3001delete\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u52d5\u7684\u306b\u78ba\u4fdd\u3055\u308c\u305f\u30e1\u30e2\u30ea\u3092\u89e3\u653e\u3059\u308b\u305f\u3081\u306e\u4e0d\u53ef\u6b20\u306a\u6a5f\u80fd\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u305d\u306e\u91cd\u8981\u6027\u3092\u793a\u3059\u5177\u4f53\u4f8b\u3092\u898b\u3066\u307f\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=\"\">class ResourceHandler {\n    int* data;\npublic:\n    ResourceHandler() {\n        \/\/ \u30e1\u30e2\u30ea\u306e\u52d5\u7684\u78ba\u4fdd\n        data = new int[1000];  \/\/ 1000\u500b\u306eint\u578b\u914d\u5217\u3092\u78ba\u4fdd\n    }\n\n    ~ResourceHandler() {\n        \/\/ \u30e1\u30e2\u30ea\u306e\u89e3\u653e\n        delete[] data;  \/\/ \u78ba\u4fdd\u3057\u305f\u30e1\u30e2\u30ea\u3092\u9069\u5207\u306b\u89e3\u653e\n    }\n};<\/pre>\n\n\n\n<p>\u9069\u5207\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u304c\u884c\u308f\u308c\u306a\u3044\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6df1\u523b\u306a\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\uff1a\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u9577\u6642\u9593\u5b9f\u884c\u6642\u306b\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u5897\u52a0<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4f4e\u4e0b\uff1a\u4f7f\u7528\u53ef\u80fd\u306a\u30e1\u30e2\u30ea\u306e\u6e1b\u5c11\u306b\u3088\u308b\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u9045\u5ef6<\/li>\n\n\n\n<li>\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30af\u30e9\u30c3\u30b7\u30e5\uff1a\u30e1\u30e2\u30ea\u4e0d\u8db3\u306b\u3088\u308b\u4e88\u671f\u305b\u306c\u7d42\u4e86<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">new\u3068delete\u306e\u95a2\u4fc2\u6027\u3092\u7406\u89e3\u3059\u308b<\/h3>\n\n\n\n<p>C++\u306b\u304a\u3051\u308bnew\u3068delete\u306f\u3001\u5e38\u306b\u30da\u30a2\u3068\u3057\u3066\u8003\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5bfe\u5fdc\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>new<\/code> \u2192 <code>delete<\/code>\uff1a\u5358\u4e00\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u78ba\u4fdd\u3068\u89e3\u653e<\/li>\n\n\n\n<li><code>new[]<\/code> \u2192 <code>delete[]<\/code>\uff1a\u914d\u5217\u306e\u78ba\u4fdd\u3068\u89e3\u653e<\/li>\n<\/ul>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001\u6b63\u3057\u3044\u4f7f\u7528\u4f8b\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5358\u4e00\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5834\u5408\nint* ptr = new int(42);        \/\/ \u30e1\u30e2\u30ea\u78ba\u4fdd\ndelete ptr;                    \/\/ \u30e1\u30e2\u30ea\u89e3\u653e\nptr = nullptr;                \/\/ \u5b89\u5168\u306e\u305f\u3081null\u30dd\u30a4\u30f3\u30bf\u306b\n\n\/\/ \u914d\u5217\u306e\u5834\u5408\nint* arr = new int[100];      \/\/ \u914d\u5217\u306e\u30e1\u30e2\u30ea\u78ba\u4fdd\ndelete[] arr;                 \/\/ \u914d\u5217\u306e\u30e1\u30e2\u30ea\u89e3\u653e\narr = nullptr;               \/\/ \u5b89\u5168\u306e\u305f\u3081null\u30dd\u30a4\u30f3\u30bf\u306b<\/pre>\n\n\n\n<p>\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u306e\u78ba\u4fdd\u3068\u89e3\u653e\u306f\u5fc5\u305a\u5bfe\u5fdc\u3055\u305b\u308b<\/li>\n\n\n\n<li>\u89e3\u653e\u5f8c\u306e\u30dd\u30a4\u30f3\u30bf\u306fnullptr\u306b\u8a2d\u5b9a\u3059\u308b<\/li>\n\n\n\n<li>\u30b9\u30b3\u30fc\u30d7\u3092\u8003\u616e\u3057\u305f\u30e1\u30e2\u30ea\u7ba1\u7406\u3092\u884c\u3046<\/li>\n\n\n\n<li>\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306e\u30e1\u30e2\u30ea\u89e3\u653e\u3082\u8003\u616e\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<p>\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u57fa\u672c\u539f\u5247\u3092\u5b88\u308b\u3053\u3068\u3067\u3001\u5b89\u5168\u3067\u52b9\u7387\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u958b\u767a\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001delete\u306e\u5177\u4f53\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3068\u6ce8\u610f\u70b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">delete\u306e\u6b63\u3057\u3044\u4f7f\u3044\u65b9\u3068\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u57fa\u672c\u7684\u306adelete\u306e\u69cb\u6587\u3068\u4f7f\u7528\u4f8b<\/h3>\n\n\n\n<p>delete\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306f\u5358\u7d14\u3067\u3059\u304c\u3001\u6b63\u3057\u304f\u4f7f\u7528\u3059\u308b\u306b\u306f\u7d30\u304b\u3044\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u57fa\u672c\u7684\u306a\u69cb\u6587\u3068\u4ee3\u8868\u7684\u306a\u4f7f\u7528\u4f8b\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class Resource {\n    \/\/ \u30ea\u30bd\u30fc\u30b9\u3092\u8868\u3059\u30af\u30e9\u30b9\npublic:\n    Resource() { std::cout &lt;&lt; \"Resource created\\n\"; }\n    ~Resource() { std::cout &lt;&lt; \"Resource destroyed\\n\"; }\n};\n\nvoid basic_delete_example() {\n    \/\/ \u5358\u4e00\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5834\u5408\n    Resource* ptr = new Resource();\n    \/\/ ... \u30ea\u30bd\u30fc\u30b9\u306e\u4f7f\u7528 ...\n    delete ptr;       \/\/ \u30ea\u30bd\u30fc\u30b9\u306e\u89e3\u653e\n    ptr = nullptr;    \/\/ nullptr\u306e\u8a2d\u5b9a\uff08\u91cd\u8981\uff09\n\n    \/\/ \u6761\u4ef6\u5206\u5c90\u304c\u3042\u308b\u5834\u5408\u306e\u5b89\u5168\u306a\u89e3\u653e\n    Resource* conditional_ptr = nullptr;\n    try {\n        conditional_ptr = new Resource();\n        \/\/ ... \u51e6\u7406 ...\n    } catch (...) {\n        delete conditional_ptr;  \/\/ \u4f8b\u5916\u6642\u306e\u89e3\u653e\n        throw;  \/\/ \u4f8b\u5916\u306e\u518d\u30b9\u30ed\u30fc\n    }\n    delete conditional_ptr;  \/\/ \u901a\u5e38\u30d1\u30b9\u3067\u306e\u89e3\u653e\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">delete\u3068delete[]\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051<\/h3>\n\n\n\n<p><code>delete<\/code>\u3068<code>delete[]<\/code>\u306e\u4f7f\u3044\u5206\u3051\u306f\u3001\u30e1\u30e2\u30ea\u78ba\u4fdd\u6642\u306e\u65b9\u6cd5\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">void array_delete_example() {\n    \/\/ \u914d\u5217\u306e\u5834\u5408\n    int* number_array = new int[5]{1, 2, 3, 4, 5};\n    delete[] number_array;  \/\/ \u914d\u5217\u7528\u306edelete[]\u3092\u4f7f\u7528\n\n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u914d\u5217\u306e\u5834\u5408\n    Resource* resource_array = new Resource[3];\n    delete[] resource_array;  \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u5404\u8981\u7d20\u306b\u5bfe\u3057\u3066\u547c\u3070\u308c\u308b\n\n    \/\/ \u8aa4\u3063\u305f\u4f7f\u7528\u4f8b\uff08\u30d0\u30b0\u306e\u539f\u56e0\uff09\n    Resource* wrong_array = new Resource[3];\n    delete wrong_array;  \/\/ \u9593\u9055\u3044\uff1a\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u304c\u767a\u751f\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u4e8c\u91cd\u89e3\u653e\u3092\u9632\u3050\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u4e8c\u91cd\u89e3\u653e\u306f\u6df1\u523b\u306a\u30d0\u30b0\u306e\u539f\u56e0\u3068\u306a\u308b\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5bfe\u7b56\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class SafeResource {\nprivate:\n    Resource* ptr;\n\npublic:\n    SafeResource() : ptr(new Resource()) {}\n\n    ~SafeResource() {\n        cleanup();\n    }\n\n    void cleanup() {\n        if (ptr != nullptr) {  \/\/ null\u30c1\u30a7\u30c3\u30af\u304c\u91cd\u8981\n            delete ptr;\n            ptr = nullptr;     \/\/ \u89e3\u653e\u5f8c\u3059\u3050\u306bnullptr\u8a2d\u5b9a\n        }\n    }\n\n    \/\/ \u30e0\u30fc\u30d6\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u306e\u5b9f\u88c5\n    SafeResource(SafeResource&amp;&amp; other) noexcept : ptr(other.ptr) {\n        other.ptr = nullptr;  \/\/ \u6240\u6709\u6a29\u306e\u79fb\u8ee2\n    }\n\n    SafeResource&amp; operator=(SafeResource&amp;&amp; other) noexcept {\n        if (this != &amp;other) {\n            cleanup();        \/\/ \u65e2\u5b58\u30ea\u30bd\u30fc\u30b9\u306e\u89e3\u653e\n            ptr = other.ptr;\n            other.ptr = nullptr;\n        }\n        return *this;\n    }\n\n    \/\/ \u30b3\u30d4\u30fc\u306e\u7981\u6b62\n    SafeResource(const SafeResource&amp;) = delete;\n    SafeResource&amp; operator=(const SafeResource&amp;) = delete;\n};<\/pre>\n\n\n\n<p>\u30e1\u30e2\u30ea\u89e3\u653e\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u89e3\u653e\u5f8c\u306f\u5fc5\u305anullptr\u3092\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u89e3\u653e\u524d\u306bnull\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046<\/li>\n\n\n\n<li>RAII\u30d1\u30bf\u30fc\u30f3\u3092\u6d3b\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\u3092\u691c\u8a0e\u3059\u308b<\/li>\n\n\n\n<li>\u4f8b\u5916\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u539f\u5247\u3092\u5b88\u308b\u3053\u3068\u3067\u3001\u591a\u304f\u306e\u30e1\u30e2\u30ea\u95a2\u9023\u306e\u554f\u984c\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3088\u304f\u906d\u9047\u3059\u308bdelete\u306e\u554f\u984c\u3068\u3001\u305d\u306e\u5bfe\u51e6\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">\u3088\u304f\u3042\u308bdelete\u306e\u554f\u984c\u3068\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u539f\u56e0\u3068\u767a\u898b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306f\u591a\u304f\u306eC++\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u767a\u751f\u3059\u308b\u4e00\u822c\u7684\u306a\u554f\u984c\u3067\u3059\u3002\u4e3b\u306a\u539f\u56e0\u3068\u767a\u898b\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class MemoryLeakExample {\nprivate:\n    int* numbers;\n    Resource* resource;\n\npublic:\n    \/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u304c\u767a\u751f\u3059\u308b\u60aa\u3044\u4f8b\n    void badFunction() {\n        numbers = new int[100];    \/\/ \u30e1\u30e2\u30ea\u78ba\u4fdd\n        resource = new Resource();  \/\/ \u30ea\u30bd\u30fc\u30b9\u78ba\u4fdd\n\n        if (someCondition()) {\n            return;  \/\/ \u30ea\u30fc\u30af\uff01\u89e3\u653e\u305b\u305a\u306breturn\n        }\n\n        \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u51e6\u7406\n        processData();  \/\/ \u4f8b\u5916\u767a\u751f\u6642\u306b\u30ea\u30fc\u30af\n\n        delete[] numbers;\n        delete resource;\n    }\n\n    \/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u826f\u3044\u4f8b\n    void goodFunction() {\n        std::unique_ptr&lt;int[]&gt; numbers(new int[100]);\n        std::unique_ptr&lt;Resource&gt; resource(new Resource());\n\n        if (someCondition()) {\n            return;  \/\/ \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u304c\u81ea\u52d5\u7684\u306b\u89e3\u653e\n        }\n\n        processData();  \/\/ \u4f8b\u5916\u767a\u751f\u6642\u3082\u81ea\u52d5\u7684\u306b\u89e3\u653e\n    }\n};<\/pre>\n\n\n\n<p>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u767a\u898b\u306e\u305f\u3081\u306e\u30c4\u30fc\u30eb\u3068\u30c6\u30af\u30cb\u30c3\u30af\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Valgrind\u306e\u4f7f\u7528<\/li>\n\n\n\n<li>Visual Studio Memory Snapshot<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30e1\u30e2\u30ea\u30c8\u30e9\u30c3\u30ab\u30fc\u306e\u5b9f\u88c5<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">dangling pointer\u3092\u9632\u3050\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>dangling pointer\uff08\u5b99\u3076\u3089\u308a\u3093\u30dd\u30a4\u30f3\u30bf\uff09\u306f\u3001\u89e3\u653e\u6e08\u307f\u306e\u30e1\u30e2\u30ea\u3092\u6307\u3057\u7d9a\u3051\u308b\u30dd\u30a4\u30f3\u30bf\u3067\u3001\u6df1\u523b\u306a\u30d0\u30b0\u306e\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class DanglingPointerExample {\npublic:\n    void demonstrateDanglingPointer() {\n        \/\/ \u5371\u967a\u306a\u4f8b\n        int* ptr1 = new int(42);\n        int* ptr2 = ptr1;  \/\/ \u540c\u3058\u30e1\u30e2\u30ea\u3092\u6307\u3059\n\n        delete ptr1;       \/\/ \u30e1\u30e2\u30ea\u3092\u89e3\u653e\n        ptr1 = nullptr;    \/\/ ptr1\u306fnullptr\u306b\n\n        \/\/ ptr2\u306f\u307e\u3060\u89e3\u653e\u6e08\u307f\u306e\u30e1\u30e2\u30ea\u3092\u6307\u3057\u3066\u3044\u308b\uff08dangling pointer\uff09\n        *ptr2 = 100;       \/\/ \u672a\u5b9a\u7fa9\u52d5\u4f5c\uff01\n\n        \/\/ \u5b89\u5168\u306a\u5b9f\u88c5\n        std::shared_ptr&lt;int&gt; safe_ptr1(new int(42));\n        std::shared_ptr&lt;int&gt; safe_ptr2 = safe_ptr1;  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u5897\u52a0\n\n        safe_ptr1.reset();  \/\/ ptr1\u3092\u89e3\u653e\u3057\u3066\u3082\n        \/\/ safe_ptr2\u306f\u4f9d\u7136\u3068\u3057\u3066\u6709\u52b9\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u7d99\u627f\u968e\u5c64\u3067\u306e\u6b63\u3057\u3044delete\u4f7f\u7528\u6cd5<\/h3>\n\n\n\n<p>\u7d99\u627f\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u4eee\u60f3\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u6b63\u3057\u3044\u5b9f\u88c5\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class Base {\npublic:\n    Base() { std::cout &lt;&lt; \"Base constructed\\n\"; }\n    \/\/ \u4eee\u60f3\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u306a\u3044\u5834\u5408\u3001\u6d3e\u751f\u30af\u30e9\u30b9\u306e\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u547c\u3070\u308c\u306a\u3044\n    virtual ~Base() { std::cout &lt;&lt; \"Base destroyed\\n\"; }\n};\n\nclass Derived : public Base {\nprivate:\n    int* data;\npublic:\n    Derived() : data(new int[100]) {\n        std::cout &lt;&lt; \"Derived constructed\\n\";\n    }\n    ~Derived() override {\n        delete[] data;\n        std::cout &lt;&lt; \"Derived destroyed\\n\";\n    }\n};\n\nvoid inheritance_example() {\n    \/\/ \u6b63\u3057\u3044\u4f7f\u7528\u4f8b\n    Base* ptr = new Derived();\n    delete ptr;  \/\/ \u4e21\u65b9\u306e\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u6b63\u3057\u304f\u547c\u3070\u308c\u308b\n\n    \/\/ \u3088\u308a\u5b89\u5168\u306a\u5b9f\u88c5\n    std::unique_ptr&lt;Base&gt; safe_ptr = std::make_unique&lt;Derived&gt;();\n    \/\/ \u30b9\u30b3\u30fc\u30d7\u3092\u629c\u3051\u308b\u3068\u81ea\u52d5\u7684\u306b\u6b63\u3057\u304f\u89e3\u653e\u3055\u308c\u308b\n}<\/pre>\n\n\n\n<p>\u7d99\u627f\u968e\u5c64\u3067\u306e\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>\u57fa\u5e95\u30af\u30e9\u30b9\u306e\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u5e38\u306b virtual \u3067\u5ba3\u8a00<\/li>\n\n\n\n<li>override \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u660e\u793a\u7684\u306b\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9<\/li>\n\n\n\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u6d3b\u7528\u3057\u305f\u6240\u6709\u6a29\u306e\u660e\u78ba\u5316<\/li>\n\n\n\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u306e\u5b9f\u88c5<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u5bfe\u3059\u308b\u9069\u5207\u306a\u5bfe\u51e6\u306b\u3088\u308a\u3001\u3088\u308a\u5b89\u5168\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30e2\u30c0\u30f3C++\u306b\u304a\u3051\u308b\u3088\u308a\u9032\u5316\u3057\u305f\u30e1\u30e2\u30ea\u7ba1\u7406\u624b\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-11\">\u30e2\u30c0\u30f3C++\u6642\u4ee3\u306e\u30e1\u30e2\u30ea\u7ba1\u7406\u624b\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306b\u3088\u308b\u81ea\u52d5\u30e1\u30e2\u30ea\u7ba1\u7406<\/h3>\n\n\n\n<p>\u30e2\u30c0\u30f3C++\u3067\u306f\u3001\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u591a\u304f\u306e\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;memory&gt;\n#include &lt;vector&gt;\n\nclass ModernMemoryManagement {\npublic:\n    \/\/ unique_ptr\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b\n    void unique_ptr_example() {\n        \/\/ \u5358\u4e00\u6240\u6709\u6a29\u306e\u8868\u73fe\n        std::unique_ptr&lt;Resource&gt; resource = std::make_unique&lt;Resource&gt;();\n        \/\/ \u81ea\u52d5\u7684\u306b\u30ea\u30bd\u30fc\u30b9\u304c\u89e3\u653e\u3055\u308c\u308b\n\n        \/\/ \u914d\u5217\u306e\u7ba1\u7406\n        std::unique_ptr&lt;Resource[]&gt; resources = std::make_unique&lt;Resource[]&gt;(10);\n        \/\/ \u914d\u5217\u3082\u81ea\u52d5\u7684\u306b\u89e3\u653e\u3055\u308c\u308b\n    }\n\n    \/\/ shared_ptr\u306e\u4f7f\u7528\u4f8b\n    void shared_ptr_example() {\n        \/\/ \u5171\u6709\u6240\u6709\u6a29\u306e\u8868\u73fe\n        std::shared_ptr&lt;Resource&gt; shared1 = std::make_shared&lt;Resource&gt;();\n        {\n            auto shared2 = shared1;  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8: 2\n            auto shared3 = shared1;  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8: 3\n            std::cout &lt;&lt; \"\u4f7f\u7528\u6570: \" &lt;&lt; shared1.use_count() &lt;&lt; \"\\n\";\n        }  \/\/ \u53c2\u7167\u30ab\u30a6\u30f3\u30c8: 1\u306b\u6e1b\u5c11\n\n        \/\/ \u5faa\u74b0\u53c2\u7167\u306e\u9632\u6b62\u306bweak_ptr\u3092\u4f7f\u7528\n        std::weak_ptr&lt;Resource&gt; weak = shared1;\n        if (auto locked = weak.lock()) {\n            \/\/ \u30ea\u30bd\u30fc\u30b9\u304c\u6709\u52b9\u306a\u5834\u5408\u306e\u51e6\u7406\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">RAII\u539f\u5247\u306e\u5b9f\u8df5\u7684\u306a\u9069\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>RAII\u306f\u300cResource Acquisition Is Initialization\u300d\u306e\u7565\u3067\u3001\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u3092\u78ba\u5b9f\u306b\u884c\u3046\u305f\u3081\u306e\u91cd\u8981\u306a\u539f\u5247\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class RAIIExample {\nprivate:\n    class FileHandler {\n        FILE* file;\n    public:\n        FileHandler(const char* filename, const char* mode) {\n            file = fopen(filename, mode);\n            if (!file) throw std::runtime_error(\"File open failed\");\n        }\n\n        ~FileHandler() {\n            if (file) fclose(file);\n        }\n\n        \/\/ \u30e0\u30fc\u30d6\u64cd\u4f5c\u306e\u5b9f\u88c5\n        FileHandler(FileHandler&amp;&amp; other) noexcept : file(other.file) {\n            other.file = nullptr;\n        }\n\n        FileHandler&amp; operator=(FileHandler&amp;&amp; other) noexcept {\n            if (this != &amp;other) {\n                if (file) fclose(file);\n                file = other.file;\n                other.file = nullptr;\n            }\n            return *this;\n        }\n\n        \/\/ \u30b3\u30d4\u30fc\u306e\u7981\u6b62\n        FileHandler(const FileHandler&amp;) = delete;\n        FileHandler&amp; operator=(const FileHandler&amp;) = delete;\n\n        \/\/ \u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u30e1\u30bd\u30c3\u30c9\n        void write(const std::string&amp; data) {\n            if (file) fprintf(file, \"%s\", data.c_str());\n        }\n    };\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u306e\u5b9f\u88c5\u3068\u6d3b\u7528<\/h3>\n\n\n\n<p>\u7279\u6b8a\u306a\u30ea\u30bd\u30fc\u30b9\u89e3\u653e\u304c\u5fc5\u8981\u306a\u5834\u5408\u3001\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u3092\u5b9f\u88c5\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class CustomDeleterExample {\npublic:\n    \/\/ \u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u306e\u5b9a\u7fa9\n    struct NetworkResourceDeleter {\n        void operator()(NetworkResource* p) const {\n            p-&gt;disconnect();  \/\/ \u5207\u65ad\u51e6\u7406\n            delete p;         \/\/ \u30e1\u30e2\u30ea\u89e3\u653e\n        }\n    };\n\n    void custom_deleter_usage() {\n        \/\/ \u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305funique_ptr\n        std::unique_ptr&lt;NetworkResource, NetworkResourceDeleter&gt; \n            net_resource(new NetworkResource());\n\n        \/\/ \u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u7528\u3057\u305f\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\n        auto lambda_deleter = [](Database* db) {\n            db-&gt;close();\n            delete db;\n        };\n        std::unique_ptr&lt;Database, decltype(lambda_deleter)&gt; \n            db(new Database(), lambda_deleter);\n    }\n\n    \/\/ \u5171\u6709\u30ea\u30bd\u30fc\u30b9\u3067\u306e\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\n    void shared_custom_deleter() {\n        auto shared_resource = std::shared_ptr&lt;Resource&gt;(\n            new Resource(),\n            [](Resource* p) {\n                p-&gt;cleanup();\n                delete p;\n            }\n        );\n    }\n};<\/pre>\n\n\n\n<p>\u30e2\u30c0\u30f3C++\u3067\u306e\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>\u751f\u30dd\u30a4\u30f3\u30bf\u306e\u4ee3\u308f\u308a\u306b\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>make_unique\/make_shared\u3092\u512a\u5148\u7684\u306b\u4f7f\u7528<\/li>\n\n\n\n<li>RAII\u539f\u5247\u306b\u5f93\u3063\u305f\u30af\u30e9\u30b9\u8a2d\u8a08<\/li>\n\n\n\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u3092\u5b9f\u88c5<\/li>\n\n\n\n<li>\u5faa\u74b0\u53c2\u7167\u3092\u9632\u3050\u305f\u3081\u306eweak_ptr\u306e\u6d3b\u7528<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30e2\u30c0\u30f3\u306a\u624b\u6cd5\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u30e1\u30e2\u30ea\u7ba1\u7406\u30d1\u30bf\u30fc\u30f3\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">\u5b9f\u8df5\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u30af\u30e9\u30b9\u306e\u8a2d\u8a08\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u4e00\u8cab\u6027\u306e\u3042\u308b\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u304c\u91cd\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u5b9f\u8df5\u7684\u306a\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306e\u57fa\u5e95\u30af\u30e9\u30b9\ntemplate&lt;typename T&gt;\nclass ResourceManager {\nprotected:\n    std::unique_ptr&lt;T&gt; resource;\n    std::mutex mutex;  \/\/ \u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u64cd\u4f5c\u306e\u305f\u3081\n\npublic:\n    ResourceManager() = default;\n    virtual ~ResourceManager() = default;\n\n    \/\/ \u30ea\u30bd\u30fc\u30b9\u306e\u5b89\u5168\u306a\u53d6\u5f97\n    T* get() {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        return resource.get();\n    }\n\n    \/\/ \u30ea\u30bd\u30fc\u30b9\u306e\u5b89\u5168\u306a\u7f6e\u304d\u63db\u3048\n    void reset(T* new_resource) {\n        std::unique_ptr&lt;T&gt; temp(new_resource);\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        resource = std::move(temp);\n    }\n\n    \/\/ \u30b3\u30d4\u30fc\u7981\u6b62\n    ResourceManager(const ResourceManager&amp;) = delete;\n    ResourceManager&amp; operator=(const ResourceManager&amp;) = delete;\n\n    \/\/ \u30e0\u30fc\u30d6\u53ef\u80fd\n    ResourceManager(ResourceManager&amp;&amp;) noexcept = default;\n    ResourceManager&amp; operator=(ResourceManager&amp;&amp;) noexcept = default;\n};\n\n\/\/ \u5177\u4f53\u7684\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u30af\u30e9\u30b9\nclass DatabaseConnection : public ResourceManager&lt;Connection&gt; {\npublic:\n    DatabaseConnection(const std::string&amp; connection_string) {\n        try {\n            resource = std::make_unique&lt;Connection&gt;(connection_string);\n        } catch (const std::exception&amp; e) {\n            std::cerr &lt;&lt; \"Connection failed: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n            throw;\n        }\n    }\n\n    void executeQuery(const std::string&amp; query) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex);\n        if (resource) {\n            resource-&gt;execute(query);\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u4f8b\u5916\u5b89\u5168\u306adelete\u306e\u5b9f\u88c5\u624b\u6cd5<\/h3>\n\n\n\n<p>\u4f8b\u5916\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3057\u306a\u304c\u3089\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u3092\u5b9f\u73fe\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class ExceptionSafeResource {\nprivate:\n    class ScopedLock {\n        std::mutex&amp; mtx;\n    public:\n        explicit ScopedLock(std::mutex&amp; m) : mtx(m) { mtx.lock(); }\n        ~ScopedLock() { mtx.unlock(); }\n    };\n\n    std::mutex resource_mutex;\n    std::vector&lt;std::unique_ptr&lt;Resource&gt;&gt; resources;\n\npublic:\n    void addResource(std::unique_ptr&lt;Resource&gt; resource) {\n        ScopedLock lock(resource_mutex);\n        resources.push_back(std::move(resource));\n    }\n\n    void processResources() noexcept {\n        try {\n            ScopedLock lock(resource_mutex);\n            for (auto&amp; resource : resources) {\n                try {\n                    resource-&gt;process();\n                } catch (...) {\n                    \/\/ \u30ea\u30bd\u30fc\u30b9\u500b\u5225\u306e\u4f8b\u5916\u3092\u8a18\u9332\u3057\u3066\u7d9a\u884c\n                    std::cerr &lt;&lt; \"Resource processing failed\" &lt;&lt; std::endl;\n                }\n            }\n        } catch (...) {\n            \/\/ \u81f4\u547d\u7684\u306a\u30a8\u30e9\u30fc\u306e\u5834\u5408\u306e\u51e6\u7406\n            std::cerr &lt;&lt; \"Critical error in resource processing\" &lt;&lt; std::endl;\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u5927\u898f\u6a21\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u30e1\u30e2\u30ea\u7ba1\u7406\u6226\u7565<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u30d1\u30bf\u30fc\u30f3\u304c\u6709\u52b9\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">template&lt;typename T, size_t PoolSize = 1024&gt;\nclass MemoryPool {\nprivate:\n    struct Block {\n        std::array&lt;T, PoolSize&gt; data;\n        std::bitset&lt;PoolSize&gt; used;\n        std::unique_ptr&lt;Block&gt; next;\n    };\n\n    std::unique_ptr&lt;Block&gt; head;\n    std::mutex pool_mutex;\n\npublic:\n    MemoryPool() : head(std::make_unique&lt;Block&gt;()) {}\n\n    T* allocate() {\n        std::lock_guard&lt;std::mutex&gt; lock(pool_mutex);\n        Block* current = head.get();\n\n        while (current) {\n            \/\/ \u7a7a\u304d\u30b9\u30ed\u30c3\u30c8\u3092\u63a2\u3059\n            for (size_t i = 0; i &lt; PoolSize; ++i) {\n                if (!current-&gt;used[i]) {\n                    current-&gt;used[i] = true;\n                    return &amp;current-&gt;data[i];\n                }\n            }\n\n            \/\/ \u65b0\u3057\u3044\u30d6\u30ed\u30c3\u30af\u304c\u5fc5\u8981\u306a\u5834\u5408\n            if (!current-&gt;next) {\n                current-&gt;next = std::make_unique&lt;Block&gt;();\n            }\n            current = current-&gt;next.get();\n        }\n\n        throw std::runtime_error(\"Memory pool exhausted\");\n    }\n\n    void deallocate(T* ptr) {\n        std::lock_guard&lt;std::mutex&gt; lock(pool_mutex);\n        Block* current = head.get();\n\n        while (current) {\n            \/\/ \u30dd\u30a4\u30f3\u30bf\u304c\u73fe\u5728\u306e\u30d6\u30ed\u30c3\u30af\u306e\u7bc4\u56f2\u5185\u304b\u30c1\u30a7\u30c3\u30af\n            if (ptr &gt;= &amp;current-&gt;data[0] &amp;&amp; \n                ptr &lt;= &amp;current-&gt;data[PoolSize - 1]) {\n                size_t index = ptr - &amp;current-&gt;data[0];\n                current-&gt;used[index] = false;\n                return;\n            }\n            current = current-&gt;next.get();\n        }\n    }\n};<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol 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