{"id":2120,"date":"2025-03-24T08:48:15","date_gmt":"2025-03-23T23:48:15","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2120"},"modified":"2025-03-24T08:48:40","modified_gmt":"2025-03-23T23:48:40","slug":"%e3%80%90%e4%bf%9d%e5%ad%98%e7%89%88%e3%80%91c-unique_ptr%e3%81%ae%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e3%83%a1%e3%83%a2%e3%83%aa%e3%83%aa%e3%83%bc%e3%82%af%e6%92%b2%e6%bb%85","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2120","title":{"rendered":"\u3010\u4fdd\u5b58\u7248\u3011C++ unique_ptr\u306e\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\">unique_ptr\u3068\u306f\uff1a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u304c\u89e3\u6c7a\u3059\u308b3\u3064\u306e\u8ab2\u984c<\/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\u308b\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u554f\u984c<\/a>      <\/li>      <li>        <a href=\"#i-2\">RAII\u306b\u3088\u308b\u81ea\u52d5\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306e\u91cd\u8981\u6027<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-3\">unique_ptr\u306b\u3088\u308b\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u306e\u4fdd\u8a3c<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-4\">unique_ptr\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-5\">unique_ptr\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\u3068\u521d\u671f\u5316<\/a>      <\/li>      <li>        <a href=\"#i-6\">\u30b9\u30b3\u30fc\u30d7\u3092\u5229\u7528\u3057\u305f\u81ea\u52d5\u30e1\u30e2\u30ea\u89e3\u653e\u306e\u5b9f\u73fe<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-7\">\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u306b\u3088\u308b\u67d4\u8edf\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-8\">\u52b9\u679c\u7684\u306aunique_ptr\u306e\u6d3b\u7528\u30b7\u30fc\u30f3\u3068\u5177\u4f53\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-9\">\u30af\u30e9\u30b9\u30e1\u30f3\u30d0\u3068\u3057\u3066\u306eunique_ptr\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3<\/a>      <\/li>      <li>        <a href=\"#i-10\">\u95a2\u6570\u623b\u308a\u5024\u3068\u3057\u3066\u306eunique_ptr\u6d3b\u7528\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-11\">\u30b3\u30f3\u30c6\u30ca\u3067\u306eunique_ptr\u7ba1\u7406\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">unique_ptr\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">\u30e0\u30fc\u30d6\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u3092\u6d3b\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u6240\u6709\u6a29\u79fb\u8ee2<\/a>      <\/li>      <li>        <a href=\"#i-14\">make_unique\u3092\u4f7f\u7528\u3057\u305f\u4f8b\u5916\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-15\">\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u306b\u3088\u308b\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u524a\u6e1b<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-16\">unique_ptr\u3068shared_ptr\u306e\u6bd4\u8f03\u6226\u7565<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-17\">\u30ea\u30bd\u30fc\u30b9\u5171\u6709\u306e\u5fc5\u8981\u6027\u306b\u3088\u308b\u9078\u629e\u57fa\u6e96<\/a>      <\/li>      <li>        <a href=\"#i-18\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u30dd\u30a4\u30f3\u30bf\u8a2d\u8a08<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-19\">\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u4f7f\u7528\u4f8b\u3068\u6ce8\u610f\u70b9<\/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\">unique_ptr\u3068\u306f\uff1a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u304c\u89e3\u6c7a\u3059\u308b3\u3064\u306e\u8ab2\u984c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u5f93\u6765\u306e\u30dd\u30a4\u30f3\u30bf\u7ba1\u7406\u304c\u62b1\u3048\u308b\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u554f\u984c<\/h3>\n\n\n\n<p>C++\u3067\u306e\u52d5\u7684\u30e1\u30e2\u30ea\u7ba1\u7406\u306b\u304a\u3044\u3066\u3001\u5f93\u6765\u306e\u751f\u30dd\u30a4\u30f3\u30bf\u306b\u3088\u308b\u7ba1\u7406\u3067\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6df1\u523b\u306a\u554f\u984c\u304c\u767a\u751f\u3057\u3084\u3059\u3044\u72b6\u6cc1\u3067\u3057\u305f\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">void traditional_pointer_problems() {\n    \/\/ \u554f\u984c1: \u30e1\u30e2\u30ea\u89e3\u653e\u5fd8\u308c\n    MyClass* ptr1 = new MyClass();\n    \/\/ ... \u51e6\u7406\u4e2d\u306b\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001delete\u304c\u5b9f\u884c\u3055\u308c\u305a\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\n    \/\/ delete ptr1; \/\/ \u89e3\u653e\u5fd8\u308c\n\n    \/\/ \u554f\u984c2: \u4e8c\u91cd\u89e3\u653e\n    MyClass* ptr2 = new MyClass();\n    delete ptr2;\n    delete ptr2;  \/\/ \u8aa4\u3063\u3066\u4e8c\u56de\u89e3\u653e -&gt; \u672a\u5b9a\u7fa9\u52d5\u4f5c\n\n    \/\/ \u554f\u984c3: \u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\n    MyClass* ptr3 = new MyClass();\n    MyClass* ptr4 = ptr3;  \/\/ \u540c\u3058\u30e1\u30e2\u30ea\u3092\u6307\u3059\n    delete ptr3;\n    \/\/ ptr4\u306f\u307e\u3060\u89e3\u653e\u6e08\u307f\u306e\u30e1\u30e2\u30ea\u3092\u6307\u3057\u3066\u3044\u308b -&gt; \u5371\u967a\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u554f\u984c\u306f\u3001\u5927\u898f\u6a21\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u7279\u306b\u6df1\u523b\u3067\u3001\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3084\u30af\u30e9\u30c3\u30b7\u30e5\u306e\u4e3b\u8981\u306a\u539f\u56e0\u3068\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">RAII\u306b\u3088\u308b\u81ea\u52d5\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306e\u91cd\u8981\u6027<\/h3>\n\n\n\n<p>RAII\u306f\u300cResource Acquisition Is Initialization\u300d\u306e\u7565\u3067\u3001C++\u306e\u91cd\u8981\u306a\u8a2d\u8a08\u539f\u5247\u306e\u4e00\u3064\u3067\u3059\u3002\u3053\u306e\u539f\u5247\u306b\u57fa\u3065\u304d\u3001unique_ptr\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7279\u5fb4\u3092\u6301\u3061\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 RAIIExample {\nprivate:\n    \/\/ unique_ptr\u306b\u3088\u308bRAII\u306e\u5b9f\u8df5\n    std::unique_ptr&lt;Resource&gt; resource;\npublic:\n    RAIIExample() : resource(std::make_unique&lt;Resource&gt;()) {\n        \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u30ea\u30bd\u30fc\u30b9\u3092\u78ba\u4fdd\n    }\n    \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306e\u660e\u793a\u7684\u306a\u89e3\u653e\u304c\u4e0d\u8981\n    \/\/ resource\u306e\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u81ea\u52d5\u7684\u306b\u547c\u3070\u308c\u308b\n};<\/pre>\n\n\n\n<p>RAII\u306e\u4e3b\u306a\u5229\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30b3\u30fc\u30d7\u30d9\u30fc\u30b9\u306e\u81ea\u52d5\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406<\/li>\n\n\n\n<li>\u4f8b\u5916\u5b89\u5168\u6027\u306e\u5411\u4e0a<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u306e\u7c21\u6f54\u5316\u3068\u4fdd\u5b88\u6027\u306e\u5411\u4e0a<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-3\">unique_ptr\u306b\u3088\u308b\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u306e\u4fdd\u8a3c<\/h3>\n\n\n\n<p>unique_ptr\u306f\u3001\u4ee5\u4e0b\u306e\u7279\u5fb4\u306b\u3088\u308a\u3001\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u5b89\u5168\u6027\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">void unique_ptr_safety_features() {\n    \/\/ \u7279\u5fb41: \u6240\u6709\u6a29\u306e\u660e\u78ba\u5316\n    std::unique_ptr&lt;MyClass&gt; ptr1 = std::make_unique&lt;MyClass&gt;();\n    \/\/ std::unique_ptr&lt;MyClass&gt; ptr2 = ptr1; \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\uff1a\u30b3\u30d4\u30fc\u7981\u6b62\n\n    \/\/ \u7279\u5fb42: \u30e0\u30fc\u30d6\u306b\u3088\u308b\u6240\u6709\u6a29\u8ee2\u9001\n    std::unique_ptr&lt;MyClass&gt; ptr3 = std::move(ptr1);\n    \/\/ \u3053\u306e\u6642\u70b9\u3067ptr1\u306fnullptr\n\n    \/\/ \u7279\u5fb43: \u30b9\u30b3\u30fc\u30d7\u7d42\u4e86\u6642\u306e\u81ea\u52d5\u89e3\u653e\n    if (true) {\n        std::unique_ptr&lt;MyClass&gt; temp = std::make_unique&lt;MyClass&gt;();\n        \/\/ \u30b9\u30b3\u30fc\u30d7\u3092\u629c\u3051\u308b\u3068\u81ea\u52d5\u7684\u306bdelete\u3055\u308c\u308b\n    }\n\n    \/\/ \u7279\u5fb44: null\u30c1\u30a7\u30c3\u30af\u306e\u5bb9\u6613\u3055\n    std::unique_ptr&lt;MyClass&gt; ptr4;\n    if (ptr4) {\n        \/\/ nullptr \u3067\u306a\u3044\u5834\u5408\u306e\u51e6\u7406\n    }\n}<\/pre>\n\n\n\n<p>unique_ptr\u304c\u3082\u305f\u3089\u3059\u4e3b\u306a\u5229\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u9632\u6b62<\/li>\n\n\n\n<li>\u6240\u6709\u6a29\u306e\u660e\u78ba\u306a\u8868\u73fe<\/li>\n\n\n\n<li>\u4f8b\u5916\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306e\u6700\u5c0f\u5316<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u7279\u5fb4\u306b\u3088\u308a\u3001unique_ptr\u306f\u73fe\u4ee3\u306eC++\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u6a19\u6e96\u7684\u306a\u9078\u629e\u80a2\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u3001\u5358\u4e00\u306e\u6240\u6709\u6a29\u3092\u6301\u3064\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306b\u304a\u3044\u3066\u3001\u305d\u306e\u771f\u4fa1\u3092\u767a\u63ee\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">unique_ptr\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">unique_ptr\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\u3068\u521d\u671f\u5316<\/h3>\n\n\n\n<p>unique_ptr\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u306b\u306f\u3001\u4e3b\u306b\u4ee5\u4e0b\u306e\u30d1\u30bf\u30fc\u30f3\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=\"\">#include &lt;memory&gt;\n#include &lt;iostream&gt;\n\nclass MyResource {\npublic:\n    MyResource() { std::cout &lt;&lt; \"Resource acquired\\n\"; }\n    ~MyResource() { std::cout &lt;&lt; \"Resource destroyed\\n\"; }\n    void doWork() { std::cout &lt;&lt; \"Doing work\\n\"; }\n};\n\nvoid initialization_patterns() {\n    \/\/ \u30d1\u30bf\u30fc\u30f31: make_unique\u3092\u4f7f\u7528\uff08\u63a8\u5968\uff09\n    std::unique_ptr&lt;MyResource&gt; ptr1 = std::make_unique&lt;MyResource&gt;();\n\n    \/\/ \u30d1\u30bf\u30fc\u30f32: \u76f4\u63a5\u69cb\u7bc9\uff08\u975e\u63a8\u5968\uff09\n    std::unique_ptr&lt;MyResource&gt; ptr2(new MyResource());\n\n    \/\/ \u30d1\u30bf\u30fc\u30f33: \u30c7\u30d5\u30a9\u30eb\u30c8\u521d\u671f\u5316\uff08nullptr\uff09\n    std::unique_ptr&lt;MyResource&gt; ptr3;\n\n    \/\/ \u30d1\u30bf\u30fc\u30f34: \u914d\u5217\u306e\u521d\u671f\u5316\n    std::unique_ptr&lt;MyResource[]&gt; array_ptr = std::make_unique&lt;MyResource[]&gt;(3);\n\n    \/\/ \u57fa\u672c\u7684\u306a\u64cd\u4f5c\n    ptr1-&gt;doWork();               \/\/ \u30e1\u30f3\u30d0\u30a2\u30af\u30bb\u30b9\n    MyResource* raw = ptr1.get(); \/\/ \u751f\u30dd\u30a4\u30f3\u30bf\u306e\u53d6\u5f97\n    if (ptr1) {                   \/\/ null \u30c1\u30a7\u30c3\u30af\n        std::cout &lt;&lt; \"ptr1 is not null\\n\";\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u30b9\u30b3\u30fc\u30d7\u3092\u5229\u7528\u3057\u305f\u81ea\u52d5\u30e1\u30e2\u30ea\u89e3\u653e\u306e\u5b9f\u73fe<\/h3>\n\n\n\n<p>\u30b9\u30b3\u30fc\u30d7\u30d9\u30fc\u30b9\u306e\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306f\u3001unique_ptr\u306e\u91cd\u8981\u306a\u7279\u5fb4\u306e\u4e00\u3064\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 ResourceManager {\nprivate:\n    std::unique_ptr&lt;MyResource&gt; resource;\n\npublic:\n    void process_data() {\n        \/\/ \u30ed\u30fc\u30ab\u30eb\u30b9\u30b3\u30fc\u30d7\u3067\u306e\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\n        {\n            std::unique_ptr&lt;MyResource&gt; temp = std::make_unique&lt;MyResource&gt;();\n            \/\/ temp\u306f\u81ea\u52d5\u7684\u306b\u89e3\u653e\u3055\u308c\u308b\n        } \/\/ \u2190 \u3053\u3053\u3067temp\u306e\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u547c\u3070\u308c\u308b\n\n        \/\/ \u6761\u4ef6\u4ed8\u304d\u30ea\u30bd\u30fc\u30b9\u78ba\u4fdd\n        if (need_resource()) {\n            resource = std::make_unique&lt;MyResource&gt;();\n        }\n        \/\/ resource\u306f\u30af\u30e9\u30b9\u306e\u30b9\u30b3\u30fc\u30d7\u3067\u7ba1\u7406\u3055\u308c\u308b\n    }\n\n    void transfer_ownership(std::unique_ptr&lt;MyResource&gt; new_resource) {\n        resource = std::move(new_resource);\n        \/\/ new_resource\u306f\u79fb\u52d5\u5f8c\u306bnullptr\u3068\u306a\u308b\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u306b\u3088\u308b\u67d4\u8edf\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406<\/h3>\n\n\n\n<p>unique_ptr\u306f\u3001\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u6b8a\u306a\u30ea\u30bd\u30fc\u30b9\u89e3\u653e\u30d1\u30bf\u30fc\u30f3\u3092\u5b9f\u73fe\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=\"\">\/\/ \u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u306e\u5b9a\u7fa9\nstruct FileDeleter {\n    void operator()(FILE* file) {\n        if (file) {\n            fclose(file);\n            std::cout &lt;&lt; \"File closed\\n\";\n        }\n    }\n};\n\nvoid custom_deleter_example() {\n    \/\/ \u30d5\u30a1\u30a4\u30eb\u30cf\u30f3\u30c9\u30eb\u7528\u306eunique_ptr\n    {\n        std::unique_ptr&lt;FILE, FileDeleter&gt; file(fopen(\"test.txt\", \"r\"));\n        if (file) {\n            \/\/ \u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\n            char buffer[100];\n            fgets(buffer, sizeof(buffer), file.get());\n        }\n    } \/\/ \u2190 \u3053\u3053\u3067FileDeleter\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\n\n    \/\/ \u30e9\u30e0\u30c0\u5f0f\u306b\u3088\u308b\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\n    auto lambda_deleter = [](MyResource* p) {\n        std::cout &lt;&lt; \"Custom cleanup\\n\";\n        delete p;\n    };\n    std::unique_ptr&lt;MyResource, decltype(lambda_deleter)&gt; \n        ptr(new MyResource(), lambda_deleter);\n}<\/pre>\n\n\n\n<p>\u5b9f\u88c5\u6642\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u521d\u671f\u5316<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5e38\u306bmake_unique\u3092\u512a\u5148\u4f7f\u7528<\/li>\n\n\n\n<li>\u4f8b\u5916\u5b89\u5168\u6027\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5<\/li>\n\n\n\n<li>\u914d\u5217\u306e\u5834\u5408\u306f\u5c02\u7528\u306e\u69cb\u6587\u3092\u4f7f\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b9\u30b3\u30fc\u30d7\u7ba1\u7406<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30af\u30e9\u30b9\u30e1\u30f3\u30d0\u3068\u3057\u3066\u306e\u9069\u5207\u306a\u521d\u671f\u5316<\/li>\n\n\n\n<li>\u660e\u793a\u7684\u306a\u30ea\u30bd\u30fc\u30b9\u89e3\u653e\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u5236\u5fa1<\/li>\n\n\n\n<li>\u6240\u6709\u6a29\u79fb\u8ee2\u306e\u9069\u5207\u306a\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u578b\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u8003\u616e<\/li>\n\n\n\n<li>\u518d\u5229\u7528\u53ef\u80fd\u306a\u8a2d\u8a08<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u5b89\u5168\u3067\u52b9\u7387\u7684\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-8\">\u52b9\u679c\u7684\u306aunique_ptr\u306e\u6d3b\u7528\u30b7\u30fc\u30f3\u3068\u5177\u4f53\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30af\u30e9\u30b9\u30e1\u30f3\u30d0\u3068\u3057\u3066\u306eunique_ptr\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p>\u30af\u30e9\u30b9\u30e1\u30f3\u30d0\u3068\u3057\u3066unique_ptr\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u4e3b\u8981\u306a\u30d1\u30bf\u30fc\u30f3\u3068\u5b9f\u88c5\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=\"\">\/\/ \u30ea\u30bd\u30fc\u30b9\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9\nclass ExpensiveResource {\npublic:\n    ExpensiveResource(size_t size) : data_size(size) {\n        std::cout &lt;&lt; \"ExpensiveResource constructed with size \" &lt;&lt; size &lt;&lt; \"\\n\";\n    }\n    ~ExpensiveResource() {\n        std::cout &lt;&lt; \"ExpensiveResource destroyed\\n\";\n    }\n    void process() { \/* \u51e6\u7406 *\/ }\nprivate:\n    size_t data_size;\n};\n\n\/\/ Pimpl\u30a4\u30c7\u30a3\u30aa\u30e0\u306e\u5b9f\u88c5\u4f8b\nclass Widget {\nprivate:\n    class Impl;  \/\/ \u524d\u65b9\u5ba3\u8a00\n    std::unique_ptr&lt;Impl&gt; pimpl;  \/\/ \u5b9f\u88c5\u306e\u8a73\u7d30\u3092\u96a0\u853d\n\npublic:\n    Widget();\n    ~Widget();\n    void doSomething();\n};\n\n\/\/ \u9045\u5ef6\u521d\u671f\u5316\u30d1\u30bf\u30fc\u30f3\nclass LazyLoader {\nprivate:\n    mutable std::unique_ptr&lt;ExpensiveResource&gt; resource;\n    size_t resource_size;\n\npublic:\n    LazyLoader(size_t size) : resource_size(size) {}\n\n    const ExpensiveResource&amp; getResource() const {\n        if (!resource) {\n            resource = std::make_unique&lt;ExpensiveResource&gt;(resource_size);\n        }\n        return *resource;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u95a2\u6570\u623b\u308a\u5024\u3068\u3057\u3066\u306eunique_ptr\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n<p>\u95a2\u6570\u304b\u3089\u52d5\u7684\u306b\u751f\u6210\u3057\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3059\u969b\u306e\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=\"\">\/\/ \u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u95a2\u6570\u30d1\u30bf\u30fc\u30f3\nclass Product {\npublic:\n    virtual ~Product() = default;\n    virtual void use() = 0;\n};\n\nclass ConcreteProductA : public Product {\npublic:\n    void use() override {\n        std::cout &lt;&lt; \"Using ConcreteProductA\\n\";\n    }\n};\n\nclass ConcreteProductB : public Product {\npublic:\n    void use() override {\n        std::cout &lt;&lt; \"Using ConcreteProductB\\n\";\n    }\n};\n\n\/\/ \u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u95a2\u6570\nstd::unique_ptr&lt;Product&gt; createProduct(const std::string&amp; type) {\n    if (type == \"A\") {\n        return std::make_unique&lt;ConcreteProductA&gt;();\n    } else {\n        return std::make_unique&lt;ConcreteProductB&gt;();\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid factoryExample() {\n    auto product = createProduct(\"A\");\n    product-&gt;use();\n}\n\n\/\/ \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u30d1\u30bf\u30fc\u30f3\nstd::unique_ptr&lt;Result&gt; processData(const Data&amp; input) {\n    try {\n        auto result = std::make_unique&lt;Result&gt;();\n        \/\/ \u51e6\u7406\n        return result;\n    } catch (const std::exception&amp; e) {\n        return nullptr;  \/\/ \u30a8\u30e9\u30fc\u6642\u306fnullptr\u3092\u8fd4\u3059\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u30b3\u30f3\u30c6\u30ca\u3067\u306eunique_ptr\u7ba1\u7406\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>STL\u30b3\u30f3\u30c6\u30ca\u3067unique_ptr\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u5b9f\u88c5\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=\"\">#include &lt;vector&gt;\n#include &lt;algorithm&gt;\n\nclass Item {\npublic:\n    Item(int v) : value(v) {}\n    int getValue() const { return value; }\nprivate:\n    int value;\n};\n\nvoid container_examples() {\n    \/\/ \u30d9\u30af\u30bf\u30fc\u3067\u306e\u7ba1\u7406\n    std::vector&lt;std::unique_ptr&lt;Item&gt;&gt; items;\n\n    \/\/ \u8981\u7d20\u306e\u8ffd\u52a0\n    items.push_back(std::make_unique&lt;Item&gt;(1));\n    items.push_back(std::make_unique&lt;Item&gt;(2));\n    items.emplace_back(std::make_unique&lt;Item&gt;(3));\n\n    \/\/ \u8981\u7d20\u306e\u30bd\u30fc\u30c8\n    std::sort(items.begin(), items.end(),\n        [](const auto&amp; a, const auto&amp; b) {\n            return a-&gt;getValue() &lt; b-&gt;getValue();\n        });\n\n    \/\/ \u6761\u4ef6\u306b\u3088\u308b\u8981\u7d20\u306e\u524a\u9664\n    items.erase(\n        std::remove_if(items.begin(), items.end(),\n            [](const auto&amp; item) {\n                return item-&gt;getValue() &lt; 2;\n            }),\n        items.end());\n\n    \/\/ \u8981\u7d20\u306e\u5909\u63db\n    std::vector&lt;std::unique_ptr&lt;Item&gt;&gt; transformed;\n    std::transform(items.begin(), items.end(),\n        std::back_inserter(transformed),\n        [](const auto&amp; item) {\n            return std::make_unique&lt;Item&gt;(item-&gt;getValue() * 2);\n        });\n}<\/pre>\n\n\n\n<p>\u5b9f\u88c5\u6642\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30af\u30e9\u30b9\u30e1\u30f3\u30d0\u3068\u3057\u3066\u306e\u4f7f\u7528<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pimpl\u30a4\u30c7\u30a3\u30aa\u30e0\u306b\u3088\u308b\u30ab\u30d7\u30bb\u30eb\u5316<\/li>\n\n\n\n<li>\u9045\u5ef6\u521d\u671f\u5316\u306b\u3088\u308b\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u306e\u9069\u5207\u306a\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u7ba1\u7406<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u95a2\u6570\u623b\u308a\u5024\u3068\u3057\u3066\u306e\u4f7f\u7528<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u7c21\u7565\u5316<\/li>\n\n\n\n<li>\u6240\u6709\u6a29\u306e\u660e\u78ba\u306a\u79fb\u8ee2<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30c6\u30ca\u3067\u306e\u4f7f\u7528<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>STL\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u306e\u9023\u643a<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u8981\u7d20\u306e\u5b89\u5168\u306a\u7ba1\u7406<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3068\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u3092\u4e21\u7acb\u3057\u305f\u5b9f\u88c5\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-12\">unique_ptr\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30e0\u30fc\u30d6\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u3092\u6d3b\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u6240\u6709\u6a29\u79fb\u8ee2<\/h3>\n\n\n\n<p>\u30e0\u30fc\u30d6\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059\u3053\u3068\u304c\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#include &lt;chrono&gt;\n\nclass LargeObject {\n    std::vector&lt;double&gt; data;\npublic:\n    LargeObject() : data(10000, 1.0) {}\n    \/\/ \u91cd\u8981\uff1a\u30e0\u30fc\u30d6\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u9069\u5207\u306b\u5b9f\u88c5\n    LargeObject(LargeObject&amp;&amp; other) noexcept \n        : data(std::move(other.data)) {}\n};\n\nclass ResourceManager {\n    std::unique_ptr&lt;LargeObject&gt; resource;\npublic:\n    \/\/ \u52b9\u7387\u7684\u306a\u6240\u6709\u6a29\u79fb\u8ee2\n    void setResource(std::unique_ptr&lt;LargeObject&gt; new_resource) {\n        resource = std::move(new_resource);  \/\/ \u52b9\u7387\u7684\u306a\u30e0\u30fc\u30d6\n    }\n\n    \/\/ \u975e\u52b9\u7387\u306a\u5b9f\u88c5\uff08\u907f\u3051\u308b\u3079\u304d\uff09\n    void setResourceCopy(const LargeObject&amp; obj) {\n        resource.reset(new LargeObject(obj));  \/\/ \u30b3\u30d4\u30fc\u304c\u767a\u751f\n    }\n\n    \/\/ \u52b9\u7387\u7684\u306a\u30ea\u30bd\u30fc\u30b9\u4ea4\u63db\n    void swapResource(ResourceManager&amp; other) {\n        resource.swap(other.resource);  \/\/ \u52b9\u7387\u7684\u306a\u4ea4\u63db\n    }\n};\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c\u7528\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\ntemplate&lt;typename F&gt;\nlong long measureExecutionTime(F&amp;&amp; func) {\n    auto start = std::chrono::high_resolution_clock::now();\n    func();\n    auto end = std::chrono::high_resolution_clock::now();\n    return std::chrono::duration_cast&lt;std::chrono::microseconds&gt;(end - start).count();\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">make_unique\u3092\u4f7f\u7528\u3057\u305f\u4f8b\u5916\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/h3>\n\n\n\n<p>make_unique\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4f8b\u5916\u5b89\u5168\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4e21\u7acb\u304c\u53ef\u80fd\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 ResourceHandler {\n    struct ComplexResource {\n        int* data;\n        explicit ComplexResource(size_t size) : data(new int[size]) {}\n        ~ComplexResource() { delete[] data; }\n    };\n\npublic:\n    \/\/ \u63a8\u5968\uff1amake_unique\u3092\u4f7f\u7528\n    static std::unique_ptr&lt;ComplexResource&gt; createSafe(size_t size) {\n        return std::make_unique&lt;ComplexResource&gt;(size);\n    }\n\n    \/\/ \u975e\u63a8\u5968\uff1a\u4f8b\u5916\u5b89\u5168\u3067\u306a\u3044\u5b9f\u88c5\n    static std::unique_ptr&lt;ComplexResource&gt; createUnsafe(size_t size) {\n        return std::unique_ptr&lt;ComplexResource&gt;(new ComplexResource(size));\n    }\n\n    \/\/ \u8907\u6570\u30ea\u30bd\u30fc\u30b9\u306e\u5b89\u5168\u306a\u521d\u671f\u5316\n    static void initializeResources(\n        std::unique_ptr&lt;ComplexResource&gt;&amp; r1,\n        std::unique_ptr&lt;ComplexResource&gt;&amp; r2) {\n        r1 = std::make_unique&lt;ComplexResource&gt;(100);\n        r2 = std::make_unique&lt;ComplexResource&gt;(200);\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u306b\u3088\u308b\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u524a\u6e1b<\/h3>\n\n\n\n<p>\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u3092\u6d3b\u7528\u3057\u3066\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u6280\u8853\u3092\u7d39\u4ecb\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=\"\">\/\/ \u30d8\u30c3\u30c0\u30d5\u30a1\u30a4\u30eb\nclass OptimizedResource {\n    struct Impl;  \/\/ PIMPL idiom\n    std::unique_ptr&lt;Impl&gt; pimpl;\n\npublic:\n    \/\/ \u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570\u306b\u3088\u308b\u6700\u9069\u5316\n    inline bool isValid() const noexcept {\n        return pimpl != nullptr;\n    }\n\n    \/\/ \u983b\u7e41\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u95a2\u6570\u3092\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\n    inline void reset() noexcept {\n        pimpl.reset();\n    }\n};\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\ntemplate&lt;typename T&gt;\nclass OptimizedContainer {\n    std::vector&lt;std::unique_ptr&lt;T&gt;&gt; items;\n\npublic:\n    \/\/ 1. \u4e8b\u524d\u306b\u30e1\u30e2\u30ea\u3092\u78ba\u4fdd\n    void reserve(size_t count) {\n        items.reserve(count);\n    }\n\n    \/\/ 2. \u52b9\u7387\u7684\u306a\u8981\u7d20\u8ffd\u52a0\n    template&lt;typename... Args&gt;\n    void emplace(Args&amp;&amp;... args) {\n        items.emplace_back(std::make_unique&lt;T&gt;(std::forward&lt;Args&gt;(args)...));\n    }\n\n    \/\/ 3. \u52b9\u7387\u7684\u306a\u691c\u7d22\n    T* findFirst(const std::function&lt;bool(const T&amp;)&gt;&amp; predicate) {\n        auto it = std::find_if(items.begin(), items.end(),\n            [&amp;](const auto&amp; item) { return predicate(*item); });\n        return it != items.end() ? it-&gt;get() : nullptr;\n    }\n};<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e0\u30fc\u30d6\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30d4\u30fc\u306e\u4ee3\u308f\u308a\u306b\u30e0\u30fc\u30d6\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u30b9\u30ef\u30c3\u30d7\u64cd\u4f5c\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u4e00\u6642\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u524a\u6e1b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4f8b\u5916\u5b89\u5168\u6027<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>make_unique\u306e\u4e00\u8cab\u3057\u305f\u4f7f\u7528<\/li>\n\n\n\n<li>\u4f8b\u5916\u767a\u751f\u6642\u306e\u30ea\u30bd\u30fc\u30b9\u30ea\u30fc\u30af\u9632\u6b62<\/li>\n\n\n\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u9069\u5207\u306a\u521d\u671f\u5316\u9806\u5e8f<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3068\u6700\u9069\u5316<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c0f\u3055\u306a\u95a2\u6570\u306e\u30a4\u30f3\u30e9\u30a4\u30f3\u5316<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u5c0f\u5316<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u8a2d\u8a08<\/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\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u640d\u306a\u3046\u3053\u3068\u306a\u304f\u3001\u5b89\u5168\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-16\">unique_ptr\u3068shared_ptr\u306e\u6bd4\u8f03\u6226\u7565<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30ea\u30bd\u30fc\u30b9\u5171\u6709\u306e\u5fc5\u8981\u6027\u306b\u3088\u308b\u9078\u629e\u57fa\u6e96<\/h3>\n\n\n\n<p>unique_ptr\u3068shared_ptr\u306e\u9069\u5207\u306a\u9078\u629e\u57fa\u6e96\u3092\u3001\u5177\u4f53\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3068\u5171\u306b\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 {\npublic:\n    Resource(const std::string&amp; name) : name_(name) {\n        std::cout &lt;&lt; \"Resource \" &lt;&lt; name_ &lt;&lt; \" created\\n\";\n    }\n    ~Resource() {\n        std::cout &lt;&lt; \"Resource \" &lt;&lt; name_ &lt;&lt; \" destroyed\\n\";\n    }\n    void use() { std::cout &lt;&lt; \"Using \" &lt;&lt; name_ &lt;&lt; \"\\n\"; }\n\nprivate:\n    std::string name_;\n};\n\n\/\/ unique_ptr\u306e\u9069\u7528\u4f8b\uff1a\u6392\u4ed6\u7684\u6240\u6709\u6a29\nclass ResourceOwner {\nprivate:\n    std::unique_ptr&lt;Resource&gt; resource_;\n\npublic:\n    ResourceOwner() : resource_(std::make_unique&lt;Resource&gt;(\"exclusive\")) {}\n\n    \/\/ \u6240\u6709\u6a29\u306e\u79fb\u8ee2\n    std::unique_ptr&lt;Resource&gt; transferOwnership() {\n        return std::move(resource_);\n    }\n};\n\n\/\/ shared_ptr\u306e\u9069\u7528\u4f8b\uff1a\u5171\u6709\u30ea\u30bd\u30fc\u30b9\nclass ResourceUser {\nprivate:\n    std::shared_ptr&lt;Resource&gt; resource_;\n\npublic:\n    ResourceUser(const std::shared_ptr&lt;Resource&gt;&amp; resource) \n        : resource_(resource) {}\n\n    void useResource() {\n        if (resource_) {\n            resource_-&gt;use();\n        }\n    }\n};<\/pre>\n\n\n\n<p>\u9078\u629e\u57fa\u6e96\u306e\u6bd4\u8f03\u8868\uff1a<\/p>\n\n\n<div id=\"id-9f180b91-ccfb-45dd-a4aa-98185a9bb870\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30b7\u30ca\u30ea\u30aa<\/th><th>unique_ptr<\/th><th>shared_ptr<\/th><\/tr><\/thead><tbody><tr><td>\u5358\u4e00\u6240\u6709\u8005<\/td><td>\u2705 \u6700\u9069<\/td><td>\u274c \u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u5927<\/td><\/tr><tr><td>\u8907\u6570\u306e\u53c2\u7167\u304c\u5fc5\u8981<\/td><td>\u274c \u4e0d\u53ef\u80fd<\/td><td>\u2705 \u9069\u5207<\/td><\/tr><tr><td>\u6240\u6709\u6a29\u306e\u660e\u78ba\u306a\u79fb\u8ee2<\/td><td>\u2705 \u660e\u793a\u7684<\/td><td>\u274c \u6697\u9ed9\u7684<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/td><td>\u2705 \u6700\u5c0f<\/td><td>\u26a0\ufe0f \u53c2\u7167\u30ab\u30a6\u30f3\u30bf\u5fc5\u8981<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td><td>\u2705 \u6700\u9ad8<\/td><td>\u26a0\ufe0f \u82e5\u5e72\u306e\u4f4e\u4e0b<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u30dd\u30a4\u30f3\u30bf\u8a2d\u8a08<\/h3>\n\n\n\n<p>\u4e21\u8005\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u7279\u6027\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u9078\u629e\u3092\u884c\u3046\u305f\u3081\u306e\u5b9f\u88c5\u4f8b\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;chrono&gt;\n#include &lt;vector&gt;\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u7528\u30c6\u30b9\u30c8\u30af\u30e9\u30b9\nclass PerformanceTest {\npublic:\n    \/\/ unique_ptr\u306e\u30c6\u30b9\u30c8\n    static void testUniquePtr(size_t iterations) {\n        auto start = std::chrono::high_resolution_clock::now();\n\n        std::vector&lt;std::unique_ptr&lt;Resource&gt;&gt; resources;\n        resources.reserve(iterations);\n\n        for (size_t i = 0; i &lt; iterations; ++i) {\n            resources.push_back(std::make_unique&lt;Resource&gt;(\"test\"));\n        }\n\n        auto end = std::chrono::high_resolution_clock::now();\n        std::chrono::duration&lt;double&gt; diff = end - start;\n        std::cout &lt;&lt; \"unique_ptr time: \" &lt;&lt; diff.count() &lt;&lt; \"s\\n\";\n    }\n\n    \/\/ shared_ptr\u306e\u30c6\u30b9\u30c8\n    static void testSharedPtr(size_t iterations) {\n        auto start = std::chrono::high_resolution_clock::now();\n\n        std::vector&lt;std::shared_ptr&lt;Resource&gt;&gt; resources;\n        resources.reserve(iterations);\n\n        for (size_t i = 0; i &lt; iterations; ++i) {\n            resources.push_back(std::make_shared&lt;Resource&gt;(\"test\"));\n        }\n\n        auto end = std::chrono::high_resolution_clock::now();\n        std::chrono::duration&lt;double&gt; diff = end - start;\n        std::cout &lt;&lt; \"shared_ptr time: \" &lt;&lt; diff.count() &lt;&lt; \"s\\n\";\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u4f7f\u7528\u4f8b\u3068\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u306e\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\u3068\u6ce8\u610f\u70b9\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=\"\">\/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30b7\u30b9\u30c6\u30e0\u306e\u5b9f\u88c5\u4f8b\nclass Cache {\nprivate:\n    std::unordered_map&lt;std::string, std::shared_ptr&lt;Resource&gt;&gt; resources_;\n    std::mutex mutex_;\n\npublic:\n    std::shared_ptr&lt;Resource&gt; getResource(const std::string&amp; key) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        auto it = resources_.find(key);\n        if (it != resources_.end()) {\n            return it-&gt;second;\n        }\n        auto resource = std::make_shared&lt;Resource&gt;(key);\n        resources_[key] = resource;\n        return resource;\n    }\n};\n\n\/\/ \u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30d1\u30bf\u30fc\u30f3\u3067\u306e\u4f7f\u3044\u5206\u3051\nclass ResourceFactory {\npublic:\n    \/\/ \u5358\u4e00\u6240\u6709\u8005\u306e\u5834\u5408\n    static std::unique_ptr&lt;Resource&gt; createExclusive(const std::string&amp; name) {\n        return std::make_unique&lt;Resource&gt;(name);\n    }\n\n    \/\/ \u5171\u6709\u304c\u5fc5\u8981\u306a\u5834\u5408\n    static std::shared_ptr&lt;Resource&gt; createShared(const std::string&amp; name) {\n        return std::make_shared&lt;Resource&gt;(name);\n    }\n};\n\n\/\/ \u5faa\u74b0\u53c2\u7167\u306e\u9632\u6b62\u4f8b\nclass Node {\nprivate:\n    std::weak_ptr&lt;Node&gt; parent_;  \/\/ \u5faa\u74b0\u53c2\u7167\u3092\u9632\u3050\u305f\u3081weak_ptr\u3092\u4f7f\u7528\n    std::vector&lt;std::shared_ptr&lt;Node&gt;&gt; children_;\n\npublic:\n    void addChild(std::shared_ptr&lt;Node&gt; child) {\n        children_.push_back(child);\n        child-&gt;parent_ = shared_from_this();\n    }\n};<\/pre>\n\n\n\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u9078\u629e\u6307\u91dd\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u9078\u629e<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u307e\u305aunique_ptr\u3092\u691c\u8a0e<\/li>\n\n\n\n<li>\u5171\u6709\u304c\u5fc5\u8981\u306a\u5834\u5408\u306e\u307fshared_ptr\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>weak_ptr\u306f\u5faa\u74b0\u53c2\u7167\u9632\u6b62\u7528\u9014\u306b\u9650\u5b9a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8003\u616e\u70b9<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u5c0f\u5316<\/li>\n\n\n\n<li>\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u64cd\u4f5c\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/li>\n\n\n\n<li>\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u30c6\u30a3\u306e\u8981\u4ef6<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8a2d\u8a08\u4e0a\u306e\u6ce8\u610f\u70b9<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6240\u6709\u6a29\u30e2\u30c7\u30eb\u306e\u660e\u78ba\u5316<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306e\u7ba1\u7406<\/li>\n\n\n\n<li>\u30b9\u30ec\u30c3\u30c9\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6307\u91dd\u306b\u5f93\u3046\u3053\u3068\u3067\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u306b\u6700\u9069\u306a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u9078\u629e\u304c\u53ef\u80fd\u306b\u306a\u308a\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-2120","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\/2120","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=2120"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2120\/revisions"}],"predecessor-version":[{"id":2121,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2120\/revisions\/2121"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}