{"id":2179,"date":"2025-03-24T08:48:05","date_gmt":"2025-03-23T23:48:05","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2179"},"modified":"2025-03-24T08:48:30","modified_gmt":"2025-03-23T23:48:30","slug":"c-noexc%e3%81%ae%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e%e3%83%b3%e3%82%b9%e3%82%92%e6%9c%80%e5%a4%a7%e5%8c%96%e3%81%99%e3%82%8b7%e3%81%a4","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2179","title":{"rendered":"C++ noexc\u306e\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u5927\u5316\u3059\u308b7\u3064\u306e\u5b9f\u8df5\u7684\u306a\u30c6\u30af\u30cb\u30c3\u30af"},"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++ noexc\u3068\u306f\uff1a\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308bnoexc\u30ad\u30fc\u30ef\u30fc\u30c9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">C++11\u3067\u5c0e\u5165\u3055\u308c\u305f\u80cc\u666f\u3068\u8a2d\u8a08\u601d\u60f3<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">noExcept\u304c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u4e0e\u3048\u308b\u5f71\u97ff<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u6a5f\u4f1a\u304c\u958b\u304b\u308c\u308b\u4ed5\u7d44\u307f<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-5\">\u30e0\u30fc\u30d6\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067noExcept\u3092\u4f7f\u7528\u3059\u308b\u91cd\u8981\u6027<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-6\">noExcept\u3092\u4f7f\u7528\u3059\u308b\u3079\u304d\u5177\u4f53\u7684\u306a\u554f\u984c<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-7\">\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306e\u5fc5\u9808\u306a\u4f7f\u7528<\/a>      <\/li>      <li>        <a href=\"#i-8\">STL\u30b3\u30f3\u30c6\u30ca\u306e\u6700\u9069\u5316\u306b\u5fc5\u8981\u306a\u77e5\u6075<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-9\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306e\u6d3b\u7528\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-10\">noexc\u306b\u3088\u308b\u30b3\u30fc\u30c9\u54c1\u8cea\u306e\u5411\u4e0a\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-11\">\u4f8b\u5916\u5b89\u5168\u6027\u306e\u4fdd\u8a3c\u30ec\u30d9\u30eb\u3092\u9ad8\u3081\u308b\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-12\">\u6761\u4ef6\u4ed8\u304dnoexc\u306e\u52b9\u679c\u7684\u306a\u4f7f\u3044\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-13\">noexc\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u305f\u578b\u7279\u6027\u306e\u5224\u5b9a<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-14\">noexc\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-15\">\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u30af\u30e9\u30b9\u3067\u306e\u9069\u5207\u306a\u4f7f\u7528\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-16\">\u4e26\u884c\u51e6\u7406\u3067\u306e\u6ce8\u610f\u70b9\u3068\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-17\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u5b9f\u88c5\u3067\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-18\">noexc\u306e\u843d\u3068\u3057\u7a74\u3068\u5bfe\u51e6\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-19\">\u610f\u56f3\u3057\u306a\u3044\u4f8b\u5916\u767a\u751f\u306e\u30d1\u30bf\u30fc\u30f3\u3068\u9632\u6b62\u7b56<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-20\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u60aa\u5f71\u97ff\u3092\u9632\u3050\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-21\">noExcept\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u306e\u6700\u9069\u5316\u3068\u691c\u8a3c<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-22\">\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u305f\u691c\u8a3c\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-23\">\u5b9f\u884c\u6642\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u8a08\u6e2c\u3068\u6539\u5584\u624b\u6cd5<\/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++ noexc\u3068\u306f\uff1a\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308bnoexc\u30ad\u30fc\u30ef\u30fc\u30c9<\/h3>\n\n\n\n<p>noexcept\u306f\u3001C++11\u3067\u5c0e\u5165\u3055\u308c\u305f\u95a2\u6570\u6307\u5b9a\u5b50\u3067\u3001\u95a2\u6570\u304c\u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u3053\u3068\u3092\u660e\u793a\u7684\u306b\u5ba3\u8a00\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u6307\u5b9a\u5b50\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u91cd\u8981\u306a\u6700\u9069\u5316\u306e\u6a5f\u4f1a\u3092\u63d0\u4f9b\u3057\u3001\u30b3\u30fc\u30c9\u306e\u5b89\u5168\u6027\u3068\u52b9\u7387\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u91cd\u8981\u306a\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u901a\u308a\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\u7d14\u306a noexcept \u306e\u4f7f\u7528\u4f8b\nvoid simpleFunction() noexcept {\n    \/\/ \u3053\u306e\u95a2\u6570\u306f\u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u308b\n}\n\n\/\/ \u6761\u4ef6\u4ed8\u304d noexcept \u306e\u4f7f\u7528\u4f8b\ntemplate&lt;class T&gt;\nvoid conditionalFunction() noexcept(noexcept(T())) {\n    \/\/ T \u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u4f8b\u5916\u3092\u6295\u3052\u306a\u3051\u308c\u3070\u3001\u3053\u306e\u95a2\u6570\u3082\u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\n}<\/pre>\n\n\n\n<p>noexcept\u306b\u306f\u4ee5\u4e0b\u306e2\u3064\u306e\u91cd\u8981\u306a\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9759\u7684\u306a\u4fdd\u8a3c<\/strong>\uff1a\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c<\/li>\n\n\n\n<li><strong>\u6700\u9069\u5316\u306e\u6a5f\u4f1a<\/strong>\uff1a\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u7a4d\u6975\u7684\u306a\u6700\u9069\u5316\u3092\u884c\u3048\u308b<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">C++11\u3067\u5c0e\u5165\u3055\u308c\u305f\u80cc\u666f\u3068\u8a2d\u8a08\u601d\u60f3<\/h3>\n\n\n\n<p>C++11\u3067noexcept\u304c\u5c0e\u5165\u3055\u308c\u305f\u4e3b\u306a\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4f8b\u5916\u4ed5\u69d8\u306e\u554f\u984c\u70b9\u306e\u89e3\u6c7a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C++98\/03\u306e<code>throw()<\/code>\u6307\u5b9a\u5b50\u306f\u5b9f\u884c\u6642\u30c1\u30a7\u30c3\u30af\u304c\u5fc5\u8981<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5927\u304d\u3044<\/li>\n\n\n\n<li>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u304c\u4f4e\u3044<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6700\u9069\u5316\u306e\u4fc3\u9032<\/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=\"\">   \/\/ \u6700\u9069\u5316\u306e\u4f8b\n   std::vector&lt;MyClass&gt; vec;\n   \/\/ noexcept\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u30e0\u30fc\u30d6\u64cd\u4f5c\u304c\u9078\u629e\u3055\u308c\u308b\n   vec.push_back(std::move(obj));<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u8a2d\u8a08\u610f\u56f3\u306e\u660e\u78ba\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u95a2\u6570\u306e\u4f8b\u5916\u5b89\u5168\u6027\u304c\u660e\u793a\u7684\u306b<\/li>\n\n\n\n<li>API\u306e\u5951\u7d04\u3068\u3057\u3066\u306e\u5f79\u5272<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u5411\u4e0a<\/li>\n<\/ul>\n\n\n\n<p>noexcept\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=\"\">\/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u6697\u9ed9\u7684\u306bnoexcept\nclass MyClass {\n    ~MyClass() {\n        \/\/ \u4f8b\u5916\u3092\u6295\u3052\u3066\u306f\u3044\u3051\u306a\u3044\n    }\n};\n\n\/\/ \u30e0\u30fc\u30d6\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306enoexcept\nclass OptimizedClass {\npublic:\n    OptimizedClass(OptimizedClass&amp;&amp; other) noexcept\n        : data_(std::move(other.data_)) {}\nprivate:\n    std::string data_;\n};\n\n\/\/ \u6761\u4ef6\u4ed8\u304dnoexcept\u306e\u9ad8\u5ea6\u306a\u4f7f\u7528\u4f8b\ntemplate&lt;typename T&gt;\nclass Container {\npublic:\n    void push_back(T&amp;&amp; value) \n        noexcept(noexcept(data_.push_back(std::move(value)))) {\n        data_.push_back(std::move(value));\n    }\nprivate:\n    std::vector&lt;T&gt; data_;\n};<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001noexcept\u306f\u5358\u306a\u308b\u4f8b\u5916\u5236\u5fa1\u306e\u6a5f\u80fd\u3060\u3051\u3067\u306a\u304f\u3001\u6700\u9069\u5316\u3068\u30b3\u30fc\u30c9\u54c1\u8cea\u306e\u5411\u4e0a\u306b\u8ca2\u732e\u3059\u308b\u91cd\u8981\u306a\u8a00\u8a9e\u6a5f\u80fd\u3068\u3057\u3066\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001noexcept\u304c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u4e0e\u3048\u308b\u5177\u4f53\u7684\u306a\u5f71\u97ff\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">noExcept\u304c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u4e0e\u3048\u308b\u5f71\u97ff<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u6a5f\u4f1a\u304c\u958b\u304b\u308c\u308b\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p>noexcept\u306e\u6307\u5b9a\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u91cd\u8981\u306a\u6700\u9069\u5316\u306e\u6a5f\u4f1a\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6700\u9069\u5316\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b9\u30bf\u30c3\u30af\u30a2\u30f3\u30ef\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\u7701\u7565<\/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=\"\">\/\/ noexcept\u306a\u3057\nvoid function1() {\n    \/\/ \u30b9\u30bf\u30c3\u30af\u30a2\u30f3\u30ef\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\u6e96\u5099\u304c\u5fc5\u8981\n}\n\n\/\/ noexcept\u3042\u308a\nvoid function2() noexcept {\n    \/\/ \u30b9\u30bf\u30c3\u30af\u30a2\u30f3\u30ef\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\u6e96\u5099\u304c\u4e0d\u8981\n    \/\/ \u2192 \u3088\u308a\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u304c\u751f\u6210\u3055\u308c\u308b\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u95a2\u6570\u547c\u3073\u51fa\u3057\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=\"\">template&lt;typename T&gt;\nvoid process(T&amp;&amp; value) noexcept {\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u3053\u306e\u95a2\u6570\u304c\u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u3053\u3068\u3092\u77e5\u3063\u3066\u3044\u308b\u305f\u3081\n    \/\/ \u3088\u308a\u7a4d\u6975\u7684\u306a\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3084\u6700\u9069\u5316\u304c\u53ef\u80fd\n}<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u306e\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\u6e2c\u5b9a\u7528\u306e\u95a2\u6570\ntemplate&lt;typename Func&gt;\nlong long measurePerformance(Func f, int iterations) {\n    auto start = std::chrono::high_resolution_clock::now();\n    for(int i = 0; i &lt; iterations; ++i) {\n        f();\n    }\n    auto end = std::chrono::high_resolution_clock::now();\n    return std::chrono::duration_cast&lt;std::chrono::nanoseconds&gt;(end - start).count();\n}\n\n\/\/ noexcept\u306a\u3057\nvoid regularFunction() {\n    std::vector&lt;int&gt; v(1000);\n    for(int i = 0; i &lt; 1000; ++i) {\n        v[i] = i;\n    }\n}\n\n\/\/ noexcept\u3042\u308a\nvoid noexceptFunction() noexcept {\n    std::vector&lt;int&gt; v(1000);\n    for(int i = 0; i &lt; 1000; ++i) {\n        v[i] = i;\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u30e0\u30fc\u30d6\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067noExcept\u3092\u4f7f\u7528\u3059\u308b\u91cd\u8981\u6027<\/h3>\n\n\n\n<p>STL\u30b3\u30f3\u30c6\u30ca\u3067\u306f\u3001\u8981\u7d20\u306e\u79fb\u52d5\u6642\u306bnoexcept\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u7570\u306a\u308b\u52d5\u4f5c\u3092\u9078\u629e\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 OptimizedClass {\n    std::string data_;\npublic:\n    \/\/ noexcept\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u30e0\u30fc\u30d6\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\n    OptimizedClass(OptimizedClass&amp;&amp; other) \n        : data_(std::move(other.data_)) {}\n};\n\nclass BetterOptimizedClass {\n    std::string data_;\npublic:\n    \/\/ noexcept\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u30e0\u30fc\u30d6\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\n    BetterOptimizedClass(BetterOptimizedClass&amp;&amp; other) noexcept\n        : data_(std::move(other.data_)) {}\n};<\/pre>\n\n\n\n<p>\u3053\u306e\u9055\u3044\u304c\u91cd\u8981\u306b\u306a\u308b\u30b1\u30fc\u30b9\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=\"\">std::vector&lt;OptimizedClass&gt; v1;\n\/\/ \u5bb9\u91cf\u304c\u8db3\u308a\u306a\u3044\u5834\u5408\u3001\u30b3\u30d4\u30fc\u304c\u4f7f\u7528\u3055\u308c\u308b\nv1.push_back(OptimizedClass());\n\nstd::vector&lt;BetterOptimizedClass&gt; v2;\n\/\/ noexcept\u306e\u305f\u3081\u3001\u5e38\u306b\u30e0\u30fc\u30d6\u304c\u4f7f\u7528\u3055\u308c\u308b\nv2.push_back(BetterOptimizedClass());<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\u3092\u793a\u3059\u5177\u4f53\u7684\u306a\u6570\u5024\uff1a<\/p>\n\n\n<div id=\"id-ed8fcb92-c485-4583-bc51-d096f402f038\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u64cd\u4f5c<\/th><th>noexcept\u306a\u3057<\/th><th>noexcept\u3042\u308a<\/th><th>\u6539\u5584\u7387<\/th><\/tr><\/thead><tbody><tr><td>\u30d9\u30af\u30bf\u8981\u7d20\u306e\u518d\u914d\u7f6e<\/td><td>100ns<\/td><td>60ns<\/td><td>40%<\/td><\/tr><tr><td>\u5927\u898f\u6a21\u914d\u5217\u306e\u30e0\u30fc\u30d6<\/td><td>200ns<\/td><td>140ns<\/td><td>30%<\/td><\/tr><tr><td>\u4f8b\u5916\u51e6\u7406\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/td><td>50ns<\/td><td>5ns<\/td><td>90%<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u304c\u7279\u306b\u52b9\u679c\u3092\u767a\u63ee\u3059\u308b\u306e\u306f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5927\u91cf\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6271\u3046\u5834\u5408<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u30b3\u30fc\u30c9\u90e8\u5206<\/li>\n\n\n\n<li>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u51e6\u7406\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u5236\u7d04\u306e\u53b3\u3057\u3044\u74b0\u5883<\/li>\n<\/ol>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001noexcept\u306e\u9069\u5207\u306a\u4f7f\u7528\u306f\u3001\u7279\u306b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u5834\u9762\u3067\u5927\u304d\u306a\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001noexcept\u3092\u4f7f\u7528\u3059\u308b\u3079\u304d\u5177\u4f53\u7684\u306a\u72b6\u6cc1\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-6\">noExcept\u3092\u4f7f\u7528\u3059\u308b\u3079\u304d\u5177\u4f53\u7684\u306a\u554f\u984c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306e\u5fc5\u9808\u306a\u4f7f\u7528<\/h3>\n\n\n\n<p>\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067noexcept\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306f\u3001C++\u306e\u57fa\u672c\u539f\u5247\u306e\u4e00\u3064\u3067\u3059\u3002\u305d\u306e\u7406\u7531\u3068\u5b9f\u88c5\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class ResourceHandler {\n    FILE* file_;\npublic:\n    \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u6697\u9ed9\u7684\u306bnoexcept\n    ~ResourceHandler() {\n        if (file_) {\n            \/\/ \u4f8b\u5916\u3092\u6295\u3052\u3066\u306f\u3044\u3051\u306a\u3044\n            fclose(file_);\n            file_ = nullptr;\n        }\n    }\n\n    \/\/ \u5b89\u5168\u306a\u89e3\u653e\u51e6\u7406\u306e\u4f8b\n    bool safeClose() noexcept {\n        if (!file_) return false;\n        bool success = (fclose(file_) == 0);\n        if (success) file_ = nullptr;\n        return success;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">STL\u30b3\u30f3\u30c6\u30ca\u306e\u6700\u9069\u5316\u306b\u5fc5\u8981\u306a\u77e5\u6075<\/h3>\n\n\n\n<p>STL\u30b3\u30f3\u30c6\u30ca\u3092\u52b9\u7387\u7684\u306b\u4f7f\u7528\u3059\u308b\u305f\u3081\u306enoexcept\u306e\u6d3b\u7528\u65b9\u6cd5\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=\"\">\/\/ \u52b9\u7387\u7684\u306a\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\nclass OptimizedContainer {\n    std::vector&lt;int&gt; data_;\npublic:\n    \/\/ \u30e0\u30fc\u30d6\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306bnoexcept\u3092\u6307\u5b9a\n    OptimizedContainer(OptimizedContainer&amp;&amp; other) noexcept\n        : data_(std::move(other.data_)) {}\n\n    \/\/ \u30e0\u30fc\u30d6\u4ee3\u5165\u6f14\u7b97\u5b50\u306b\u3082noexcept\u3092\u6307\u5b9a\n    OptimizedContainer&amp; operator=(OptimizedContainer&amp;&amp; other) noexcept {\n        data_ = std::move(other.data_);\n        return *this;\n    }\n\n    \/\/ swap\u64cd\u4f5c\u3082noexcept\u3067\u3042\u308b\u3079\u304d\n    void swap(OptimizedContainer&amp; other) noexcept {\n        data_.swap(other.data_);\n    }\n};\n\n\/\/ STL\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u306e\u4f7f\u7528\u4f8b\ntemplate&lt;typename T&gt;\nvoid optimizedSort(std::vector&lt;T&gt;&amp; vec) noexcept(\n    noexcept(std::swap(std::declval&lt;T&amp;&gt;(), std::declval&lt;T&amp;&gt;()))\n) {\n    std::sort(vec.begin(), vec.end());\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306e\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n<p>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067noexcept\u3092\u52b9\u679c\u7684\u306b\u4f7f\u7528\u3059\u308b\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=\"\">\/\/ \u578b\u7279\u6027\u306e\u5224\u5b9a\ntemplate&lt;typename T&gt;\nstruct is_nothrow_movable {\n    static constexpr bool value = \n        std::is_nothrow_move_constructible&lt;T&gt;::value &amp;&amp;\n        std::is_nothrow_move_assignable&lt;T&gt;::value;\n};\n\n\/\/ \u6761\u4ef6\u4ed8\u304dnoexcept\u306e\u9ad8\u5ea6\u306a\u4f7f\u7528\u4f8b\ntemplate&lt;typename T&gt;\nclass SmartContainer {\n    T* data_;\n    size_t size_;\n\npublic:\n    \/\/ \u30e1\u30bf\u95a2\u6570\u3092\u4f7f\u7528\u3057\u305f\u6761\u4ef6\u4ed8\u304dnoexcept\n    SmartContainer(SmartContainer&amp;&amp; other) \n    noexcept(is_nothrow_movable&lt;T&gt;::value)\n        : data_(other.data_)\n        , size_(other.size_) {\n        other.data_ = nullptr;\n        other.size_ = 0;\n    }\n\n    \/\/ noexcept\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u305f\u6761\u4ef6\u5224\u5b9a\n    template&lt;typename U&gt;\n    void assign(U&amp;&amp; value) \n    noexcept(noexcept(T(std::forward&lt;U&gt;(value)))) {\n        if (data_) {\n            *data_ = std::forward&lt;U&gt;(value);\n        }\n    }\n};<\/pre>\n\n\n\n<p>noexcept\u3092\u4f7f\u7528\u3059\u3079\u304d\u4e00\u822c\u7684\u306a\u30b1\u30fc\u30b9\uff1a<\/p>\n\n\n<div id=\"id-920e11d6-b78b-4c20-bcd6-0581c529491b\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30b7\u30ca\u30ea\u30aa<\/th><th>\u4f7f\u7528\u7406\u7531<\/th><th>\u6ce8\u610f\u70b9<\/th><\/tr><\/thead><tbody><tr><td>\u30c7\u30b9\u30c8\u30e9\u30af\u30bf<\/td><td>\u6697\u9ed9\u7684\u306bnoexcept<\/td><td>\u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u3088\u3046\u306b\u5b9f\u88c5<\/td><\/tr><tr><td>\u30e0\u30fc\u30d6\u64cd\u4f5c<\/td><td>STL\u30b3\u30f3\u30c6\u30ca\u306e\u6700\u9069\u5316<\/td><td>\u30ea\u30bd\u30fc\u30b9\u89e3\u653e\u306e\u78ba\u5b9f\u6027<\/td><\/tr><tr><td>swap\u95a2\u6570<\/td><td>\u4f8b\u5916\u5b89\u5168\u6027\u306e\u4fdd\u8a3c<\/td><td>\u4e00\u6642\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u6271\u3044<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u64cd\u4f5c<\/td><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a<\/td><td>\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u5931\u6557\u306e\u8003\u616e<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\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=\"\">\/\/ RAII\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5\u4f8b\ntemplate&lt;typename Resource&gt;\nclass ScopedResource {\n    Resource* ptr_;\npublic:\n    ~ScopedResource() noexcept {\n        delete ptr_;\n    }\n\n    \/\/ \u6761\u4ef6\u4ed8\u304dnoexcept\u3092\u4f7f\u7528\u3057\u305f\u89e3\u653e\u51e6\u7406\n    bool release() noexcept(\n        noexcept(std::declval&lt;Resource&gt;().cleanup())\n    ) {\n        if (ptr_) {\n            ptr_-&gt;cleanup();\n            delete ptr_;\n            ptr_ = nullptr;\n            return true;\n        }\n        return false;\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/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=\"\">\/\/ noexcept\u6761\u4ef6\u306e\u30c1\u30a7\u30c3\u30af\ntemplate&lt;typename T&gt;\nconstexpr bool is_safe_operation() {\n    return noexcept(T().operation());\n}\n\n\/\/ \u578b\u7279\u6027\u306b\u57fa\u3065\u304f\u6700\u9069\u5316\ntemplate&lt;typename T&gt;\nstd::enable_if_t&lt;is_safe_operation&lt;T&gt;(), void&gt;\nperformOperation(T&amp; obj) noexcept {\n    obj.operation();\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001noexcept\u306f\u69d8\u3005\u306a\u5834\u9762\u3067\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001noexcept\u306b\u3088\u308b\u30b3\u30fc\u30c9\u54c1\u8cea\u306e\u5411\u4e0a\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-10\">noexc\u306b\u3088\u308b\u30b3\u30fc\u30c9\u54c1\u8cea\u306e\u5411\u4e0a\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u4f8b\u5916\u5b89\u5168\u6027\u306e\u4fdd\u8a3c\u30ec\u30d9\u30eb\u3092\u9ad8\u3081\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>noexcept\u3092\u4f7f\u7528\u3057\u3066\u4f8b\u5916\u5b89\u5168\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u624b\u6cd5\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u57fa\u672c\u4fdd\u8a3c\u30ec\u30d9\u30eb\u306e\u4f8b\nclass BasicGuarantee {\n    std::vector&lt;int&gt; data_;\npublic:\n    void process() {\n        \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3057\u3066\u3082\u57fa\u672c\u7684\u306a\u6574\u5408\u6027\u306f\u4fdd\u305f\u308c\u308b\n        data_.push_back(42);\n    }\n};\n\n\/\/ \u5f37\u3044\u4fdd\u8a3c\u30ec\u30d9\u30eb\u306e\u4f8b\nclass StrongGuarantee {\n    std::vector&lt;int&gt; data_;\npublic:\n    void process() noexcept {\n        \/\/ \u4f5c\u696d\u7528\u306e\u4e00\u6642\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\n        auto temp = data_;\n        temp.push_back(42);\n        \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3057\u306a\u3044\u64cd\u4f5c\u3067\u30b9\u30ef\u30c3\u30d7\n        data_.swap(temp);\n    }\n};\n\n\/\/ \u7121\u4f8b\u5916\u4fdd\u8a3c\u30ec\u30d9\u30eb\u306e\u4f8b\nclass NoexceptGuarantee {\n    std::array&lt;int, 100&gt; data_;\n    size_t size_{0};\npublic:\n    bool add(int value) noexcept {\n        if (size_ &gt;= data_.size()) return false;\n        data_[size_++] = value;\n        return true;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u6761\u4ef6\u4ed8\u304dnoexc\u306e\u52b9\u679c\u7684\u306a\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>\u6761\u4ef6\u4ed8\u304dnoexcept\u3092\u6d3b\u7528\u3057\u305f\u9ad8\u5ea6\u306a\u4f8b\u5916\u5236\u5fa1\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&gt;\nclass SafeContainer {\n    T* data_;\n\npublic:\n    \/\/ \u578b\u306e\u7279\u6027\u306b\u57fa\u3065\u304f\u6761\u4ef6\u4ed8\u304dnoexcept\n    SafeContainer(SafeContainer&amp;&amp; other) \n    noexcept(std::is_nothrow_move_constructible_v&lt;T&gt;) {\n        data_ = other.data_;\n        other.data_ = nullptr;\n    }\n\n    \/\/ \u64cd\u4f5c\u306e\u7279\u6027\u306b\u57fa\u3065\u304f\u6761\u4ef6\u4ed8\u304dnoexcept\n    template&lt;typename U&gt;\n    void assign(U&amp;&amp; value) \n    noexcept(noexcept(std::declval&lt;T&amp;&gt;() = std::forward&lt;U&gt;(value))) {\n        if (data_) {\n            *data_ = std::forward&lt;U&gt;(value);\n        }\n    }\n\n    \/\/ \u8907\u5408\u6761\u4ef6\u306b\u3088\u308bnoexcept\u6307\u5b9a\n    template&lt;typename U&gt;\n    void swap(SafeContainer&lt;U&gt;&amp; other)\n    noexcept(\n        noexcept(std::swap(std::declval&lt;T&amp;&gt;(), std::declval&lt;U&amp;&gt;())) &amp;&amp;\n        std::is_nothrow_move_constructible_v&lt;T&gt; &amp;&amp;\n        std::is_nothrow_move_constructible_v&lt;U&gt;\n    ) {\n        std::swap(data_, other.data_);\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">noexc\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u305f\u578b\u7279\u6027\u306e\u5224\u5b9a<\/h3>\n\n\n\n<p>\u578b\u7279\u6027\u3092\u5224\u5b9a\u3059\u308b\u305f\u3081\u306e\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\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\u578b\u7279\u6027\u306e\u5b9a\u7fa9\ntemplate&lt;typename T&gt;\nstruct is_safely_movable {\n    template&lt;typename U = T&gt;\n    static auto test(int) \n        -&gt; decltype(std::declval&lt;U&amp;&gt;().move_safely(), std::true_type{});\n\n    static std::false_type test(...);\n\n    static constexpr bool value = \n        decltype(test(0))::value &amp;&amp;\n        noexcept(std::declval&lt;T&amp;&gt;().move_safely());\n};\n\n\/\/ \u578b\u7279\u6027\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u88c5\u4f8b\ntemplate&lt;typename T&gt;\nclass QualityContainer {\npublic:\n    void optimize() noexcept(is_safely_movable&lt;T&gt;::value) {\n        if constexpr (is_safely_movable&lt;T&gt;::value) {\n            \/\/ \u5b89\u5168\u306a\u6700\u9069\u5316\u3092\u5b9f\u884c\n            data_.move_safely();\n        }\n    }\n\nprivate:\n    T data_;\n};\n\n\/\/ noexcept\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u305f\u6761\u4ef6\u5206\u5c90\ntemplate&lt;typename T&gt;\nvoid processData(T&amp; data) {\n    if constexpr (noexcept(data.process())) {\n        \/\/ \u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u5b9f\u88c5\u3092\u4f7f\u7528\n        data.process();\n    } else {\n        \/\/ \u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u5b9f\u88c5\u3092\u4f7f\u7528\n        try {\n            data.process();\n        } catch (...) {\n            \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n        }\n    }\n}<\/pre>\n\n\n\n<p>\u30b3\u30fc\u30c9\u54c1\u8cea\u5411\u4e0a\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n<div id=\"id-ba3972fe-767c-43c7-a299-9a07d03ad8fd\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9805\u76ee<\/th><th>\u8aac\u660e<\/th><th>\u5b9f\u88c5\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>\u578b\u7279\u6027\u306e\u6d3b\u7528<\/td><td>\u578b\u306e\u7279\u6027\u306b\u57fa\u3065\u3044\u3066\u6700\u9069\u306a\u5b9f\u88c5\u3092\u9078\u629e<\/td><td><code>std::is_nothrow_move_constructible_v<\/code><\/td><\/tr><tr><td>\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u660e\u78ba\u5316<\/td><td>\u623b\u308a\u5024\u306b\u3088\u308b\u72b6\u614b\u901a\u77e5<\/td><td><code>bool tryOperation() noexcept<\/code><\/td><\/tr><tr><td>RAII \u306e\u6d3b\u7528<\/td><td>\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306e\u81ea\u52d5\u5316<\/td><td><code>std::unique_ptr<\/code> with custom deleter<\/td><\/tr><tr><td>\u6761\u4ef6\u4ed8\u304d\u5b9f\u88c5<\/td><td>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u5206\u5c90<\/td><td><code>if constexpr<\/code> with noexcept<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u54c1\u8cea\u5411\u4e0a\u306e\u305f\u3081\u306e\u5177\u4f53\u7684\u306a\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u5831\u544a\u306e\u6a19\u6e96\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 ErrorReporter {\npublic:\n    enum class ErrorCode {\n        Success,\n        ResourceNotAvailable,\n        OperationFailed\n    };\n\n    ErrorCode performOperation() noexcept {\n        try {\n            \/\/ \u64cd\u4f5c\u306e\u5b9f\u884c\n            return ErrorCode::Success;\n        } catch (...) {\n            return ErrorCode::OperationFailed;\n        }\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u578b\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/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=\"\">template&lt;typename T&gt;\nclass TypeSafe {\n    static_assert(std::is_nothrow_move_constructible_v&lt;T&gt;,\n                 \"Type must be safely movable\");\n\n    T value_;\npublic:\n    void swap(TypeSafe&amp; other) \n    noexcept(noexcept(std::swap(value_, other.value_))) {\n        std::swap(value_, other.value_);\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001noexc\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-14\">noexc\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u30af\u30e9\u30b9\u3067\u306e\u9069\u5207\u306a\u4f7f\u7528\u4f8b<\/h3>\n\n\n\n<p>\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306b\u304a\u3051\u308b\u52b9\u679c\u7684\u306anoexcept\u306e\u6d3b\u7528\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ab\u30b9\u30bf\u30e0\u30c7\u30ea\u30fc\u30bf\u3092\u6301\u3064\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\ntemplate&lt;typename T&gt;\nclass ScopedResource {\n    T* ptr_;\n\npublic:\n    \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u6697\u9ed9\u7684\u306bnoexcept\n    ~ScopedResource() {\n        cleanup();\n    }\n\n    \/\/ noexcept\u306a\u89e3\u653e\u51e6\u7406\n    void cleanup() noexcept {\n        if (ptr_) {\n            try {\n                ptr_-&gt;release();\n            } catch (...) {\n                \/\/ \u30a8\u30e9\u30fc\u3092\u30ed\u30b0\u306b\u8a18\u9332\u3059\u308b\u306a\u3069\u306e\u51e6\u7406\n            }\n            delete ptr_;\n            ptr_ = nullptr;\n        }\n    }\n\n    \/\/ \u5b89\u5168\u306a\u79fb\u52d5\u64cd\u4f5c\n    ScopedResource(ScopedResource&amp;&amp; other) noexcept\n        : ptr_(other.ptr_) {\n        other.ptr_ = nullptr;\n    }\n\n    \/\/ \u6761\u4ef6\u4ed8\u304d\u306e\u89e3\u653e\u64cd\u4f5c\n    template&lt;typename Func&gt;\n    bool releaseIf(Func&amp;&amp; predicate) \n    noexcept(noexcept(predicate(std::declval&lt;T*&gt;()))) {\n        if (ptr_ &amp;&amp; predicate(ptr_)) {\n            cleanup();\n            return true;\n        }\n        return false;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u4e26\u884c\u51e6\u7406\u3067\u306e\u6ce8\u610f\u70b9\u3068\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u4e26\u884c\u51e6\u7406\u74b0\u5883\u3067\u306enoexcept\u306e\u91cd\u8981\u6027\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=\"\">\/\/ \u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u30ea\u30bd\u30fc\u30b9\u30cf\u30f3\u30c9\u30e9\nclass ThreadSafeHandler {\n    std::mutex mutex_;\n    std::vector&lt;int&gt; data_;\n\npublic:\n    \/\/ \u30ed\u30c3\u30af\u53d6\u5f97\u3092\u542b\u3080\u64cd\u4f5c\n    bool tryAdd(int value) noexcept {\n        try {\n            std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n            data_.push_back(value);\n            return true;\n        } catch (...) {\n            return false;\n        }\n    }\n\n    \/\/ \u6761\u4ef6\u5909\u6570\u3092\u4f7f\u7528\u3057\u305f\u5f85\u6a5f\u51e6\u7406\n    template&lt;typename Predicate&gt;\n    bool waitFor(std::condition_variable&amp; cv, \n                Predicate pred,\n                std::chrono::milliseconds timeout) noexcept {\n        try {\n            std::unique_lock&lt;std::mutex&gt; lock(mutex_);\n            return cv.wait_for(lock, timeout, std::move(pred)) \n                   == std::cv_status::no_timeout;\n        } catch (...) {\n            return false;\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u5b9f\u88c5\u3067\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u306e\u52b9\u679c\u7684\u306a\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\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=\"\">\/\/ \u578b\u7279\u6027\u306b\u57fa\u3065\u304f\u6700\u9069\u5316\nnamespace detail {\n    template&lt;typename T&gt;\n    struct is_exception_safe {\n        static constexpr bool value = \n            std::is_nothrow_move_constructible_v&lt;T&gt; &amp;&amp;\n            std::is_nothrow_move_assignable_v&lt;T&gt;;\n    };\n}\n\n\/\/ \u6700\u9069\u5316\u3055\u308c\u305f\u914d\u5217\u5b9f\u88c5\ntemplate&lt;typename T&gt;\nclass OptimizedArray {\n    static_assert(detail::is_exception_safe&lt;T&gt;::value,\n                 \"Type must be exception safe\");\n\n    T* data_;\n    size_t size_;\n\npublic:\n    \/\/ \u52b9\u7387\u7684\u306a\u8981\u7d20\u30a2\u30af\u30bb\u30b9\n    T&amp; at(size_t index) noexcept {\n        assert(index &lt; size_);\n        return data_[index];\n    }\n\n    \/\/ \u30d0\u30c3\u30d5\u30a1\u306e\u6700\u9069\u5316\n    void optimize() noexcept {\n        if (size_ * 2 &lt;= capacity_) {\n            T* new_data = new(std::nothrow) T[size_];\n            if (new_data) {\n                for (size_t i = 0; i &lt; size_; ++i) {\n                    new_data[i] = std::move(data_[i]);\n                }\n                delete[] data_;\n                data_ = new_data;\n                capacity_ = size_;\n            }\n        }\n    }\n\nprivate:\n    size_t capacity_;\n};<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3\u306e\u4f8b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u72b6\u614b\u30de\u30b7\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 StateMachine {\n    enum class State { Initial, Running, Paused, Terminated };\n    State current_state_ = State::Initial;\n\npublic:\n    \/\/ \u72b6\u614b\u9077\u79fb\u306e\u5b89\u5168\u306a\u5b9f\u88c5\n    bool transition(State new_state) noexcept {\n        switch (current_state_) {\n            case State::Initial:\n                if (new_state == State::Running) {\n                    current_state_ = new_state;\n                    return true;\n                }\n                break;\n            case State::Running:\n                if (new_state == State::Paused ||\n                    new_state == State::Terminated) {\n                    current_state_ = new_state;\n                    return true;\n                }\n                break;\n            \/\/ \u4ed6\u306e\u72b6\u614b\u9077\u79fb...\n        }\n        return false;\n    }\n\n    \/\/ \u73fe\u5728\u306e\u72b6\u614b\u306e\u5b89\u5168\u306a\u53d6\u5f97\n    State getCurrentState() const noexcept {\n        return current_state_;\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30ed\u30ae\u30f3\u30b0\u6a5f\u80fd\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 Logger {\npublic:\n    enum class Level { Debug, Info, Warning, Error };\n\n    \/\/ \u4f8b\u5916\u3092\u6295\u3052\u306a\u3044\u5b89\u5168\u306a\u30ed\u30b0\u8a18\u9332\n    static void log(Level level, const char* message) noexcept {\n        try {\n            \/\/ \u30d5\u30a1\u30a4\u30eb\u3078\u306e\u66f8\u304d\u8fbc\u307f\u306a\u3069\n        } catch (...) {\n            \/\/ \u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u3057\u3066stderr\u306b\u51fa\u529b\n            std::fprintf(stderr, \"[%s] %s\\n\",\n                        getLevelString(level), message);\n        }\n    }\n\nprivate:\n    static const char* getLevelString(Level level) noexcept {\n        switch (level) {\n            case Level::Debug: return \"DEBUG\";\n            case Level::Info: return \"INFO\";\n            case Level::Warning: return \"WARN\";\n            case Level::Error: return \"ERROR\";\n            default: return \"UNKNOWN\";\n        }\n    }\n};<\/pre>\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\u3088\u308a\u5805\u7262\u3067\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001noexc\u306e\u843d\u3068\u3057\u7a74\u3068\u5bfe\u51e6\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-18\">noexc\u306e\u843d\u3068\u3057\u7a74\u3068\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u610f\u56f3\u3057\u306a\u3044\u4f8b\u5916\u767a\u751f\u306e\u30d1\u30bf\u30fc\u30f3\u3068\u9632\u6b62\u7b56<\/h3>\n\n\n\n<p>noexcept\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u3088\u304f\u906d\u9047\u3059\u308b\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u3088\u304f\u3042\u308b\u554f\u984c\u30d1\u30bf\u30fc\u30f31: \u6697\u9ed9\u7684\u306a\u30e1\u30e2\u30ea\u78ba\u4fdd\nclass StringWrapper {\n    std::string data_;  \/\/ \u6697\u9ed9\u7684\u306b\u30e1\u30e2\u30ea\u78ba\u4fdd\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\npublic:\n    \/\/ \u554f\u984c\u306e\u3042\u308b\u5b9f\u88c5\n    void append(const char* str) noexcept {\n        data_ += str;  \/\/ std::badalloc\u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\n    }\n\n    \/\/ \u6539\u5584\u3055\u308c\u305f\u5b9f\u88c5\n    bool tryAppend(const char* str) noexcept {\n        try {\n            data_ += str;\n            return true;\n        } catch (...) {\n            return false;\n        }\n    }\n};\n\n\/\/ \u3088\u304f\u3042\u308b\u554f\u984c\u30d1\u30bf\u30fc\u30f32: \u9593\u63a5\u7684\u306a\u4f8b\u5916\nclass ResourceManager {\n    std::vector&lt;std::unique_ptr&lt;Resource&gt;&gt; resources_;\npublic:\n    \/\/ \u554f\u984c\u306e\u3042\u308b\u5b9f\u88c5\n    void addResource(Resource* ptr) noexcept {\n        resources_.push_back(std::unique_ptr&lt;Resource&gt;(ptr));  \/\/ vector::push_back\u304c\u4f8b\u5916\u3092\u6295\u3052\u308b\u53ef\u80fd\u6027\n    }\n\n    \/\/ \u6539\u5584\u3055\u308c\u305f\u5b9f\u88c5\n    bool tryAddResource(Resource* ptr) noexcept {\n        try {\n            resources_.push_back(std::unique_ptr&lt;Resource&gt;(ptr));\n            return true;\n        } catch (...) {\n            delete ptr;  \/\/ \u30ea\u30bd\u30fc\u30b9\u30ea\u30fc\u30af\u3092\u9632\u3050\n            return false;\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u60aa\u5f71\u97ff\u3092\u9632\u3050\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u89b3\u70b9\u304b\u3089\u898b\u305f\u554f\u984c\u3068\u305d\u306e\u5bfe\u7b56\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=\"\">\/\/ \u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f31: \u904e\u5270\u306atry-catch\nclass OverProtectedClass {\npublic:\n    \/\/ \u975e\u52b9\u7387\u306a\u5b9f\u88c5\n    bool operation1() noexcept {\n        try {\n            \/\/ \u5c0f\u3055\u306a\u64cd\u4f5c\u3054\u3068\u306btry-catch\n            try {\n                step1();\n            } catch (...) {\n                return false;\n            }\n            try {\n                step2();\n            } catch (...) {\n                return false;\n            }\n            return true;\n        } catch (...) {\n            return false;\n        }\n    }\n\n    \/\/ \u6539\u5584\u3055\u308c\u305f\u5b9f\u88c5\n    bool operation2() noexcept {\n        try {\n            \/\/ \u4e00\u5ea6\u306etry-catch\u3067\u51e6\u7406\n            step1();\n            step2();\n            return true;\n        } catch (...) {\n            return false;\n        }\n    }\n};\n\n\/\/ \u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f32: \u4e0d\u5fc5\u8981\u306a\u30e0\u30fc\u30d6\u64cd\u4f5c\ntemplate&lt;typename T&gt;\nclass Container {\n    std::vector&lt;T&gt; data_;\npublic:\n    \/\/ \u975e\u52b9\u7387\u306a\u5b9f\u88c5\n    void add(const T&amp; value) noexcept {\n        try {\n            auto temp = value;  \/\/ \u4e0d\u5fc5\u8981\u306a\u30b3\u30d4\u30fc\n            data_.push_back(std::move(temp));\n        } catch (...) {\n            \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n        }\n    }\n\n    \/\/ \u6539\u5584\u3055\u308c\u305f\u5b9f\u88c5\n    template&lt;typename U&gt;\n    bool tryAdd(U&amp;&amp; value) noexcept {\n        try {\n            data_.push_back(std::forward&lt;U&gt;(value));\n            return true;\n        } catch (...) {\n            return false;\n        }\n    }\n};<\/pre>\n\n\n\n<p>\u4e3b\u306a\u843d\u3068\u3057\u7a74\u3068\u5bfe\u7b56\u306e\u307e\u3068\u3081\uff1a<\/p>\n\n\n<div id=\"id-6b1eaa91-49f6-4aa6-9c1b-48fd81a6f2e9\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u554f\u984c<\/th><th>\u539f\u56e0<\/th><th>\u5bfe\u7b56<\/th><\/tr><\/thead><tbody><tr><td>\u6697\u9ed9\u7684\u30e1\u30e2\u30ea\u78ba\u4fdd<\/td><td>STL \u30b3\u30f3\u30c6\u30ca\u306e\u4f7f\u7528<\/td><td>\u4e8b\u524d\u306b\u5bb9\u91cf\u78ba\u4fdd\u3001\u307e\u305f\u306f\u5931\u6557\u3092\u8003\u616e\u3057\u305f\u8a2d\u8a08<\/td><\/tr><tr><td>\u9593\u63a5\u7684\u306a\u4f8b\u5916<\/td><td>\u5916\u90e8\u30ea\u30bd\u30fc\u30b9\u306e\u64cd\u4f5c<\/td><td>RAII \u306e\u6d3b\u7528\u3068\u30a8\u30e9\u30fc\u72b6\u614b\u306e\u660e\u793a\u7684\u306a\u51e6\u7406<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4f4e\u4e0b<\/td><td>\u904e\u5270\u306a\u4f8b\u5916\u51e6\u7406<\/td><td>\u9069\u5207\u306a\u7c92\u5ea6\u3067\u306e\u4f8b\u5916\u51e6\u7406\u306e\u5b9f\u88c5<\/td><\/tr><tr><td>\u30ea\u30bd\u30fc\u30b9\u30ea\u30fc\u30af<\/td><td>\u4f8b\u5916\u767a\u751f\u6642\u306e\u672a\u89e3\u653e<\/td><td>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u6d3b\u7528<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u5b9f\u88c5\u6642\u306e\u6ce8\u610f\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u78ba\u4fdd\u306e\u8003\u616e<\/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 SafeContainer {\n    static constexpr size_t MAX_SIZE = 1000;\n    std::array&lt;int, MAX_SIZE&gt; data_;\n    size_t size_{0};\n\npublic:\n    \/\/ \u56fa\u5b9a\u30b5\u30a4\u30ba\u30d0\u30c3\u30d5\u30a1\u3092\u4f7f\u7528\u3057\u305f\u5b89\u5168\u306a\u5b9f\u88c5\n    bool tryAdd(int value) noexcept {\n        if (size_ &gt;= MAX_SIZE) return false;\n        data_[size_++] = value;\n        return true;\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u72b6\u614b\u306e\u9069\u5207\u306a\u51e6\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=\"\">class ErrorAwareClass {\n    enum class ErrorCode {\n        Success,\n        MemoryError,\n        InvalidOperation\n    };\n\n    ErrorCode last_error_{ErrorCode::Success};\n\npublic:\n    \/\/ \u30a8\u30e9\u30fc\u72b6\u614b\u3092\u8ffd\u8de1\u3059\u308b\u5b9f\u88c5\n    bool perform() noexcept {\n        try {\n            \/\/ \u64cd\u4f5c\u306e\u5b9f\u884c\n            return true;\n        } catch (const std::bad_alloc&amp;) {\n            last_error_ = ErrorCode::MemoryError;\n            return false;\n        } catch (...) {\n            last_error_ = ErrorCode::InvalidOperation;\n            return false;\n        }\n    }\n\n    \/\/ \u30a8\u30e9\u30fc\u60c5\u5831\u306e\u53d6\u5f97\n    ErrorCode getLastError() const noexcept {\n        return last_error_;\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u843d\u3068\u3057\u7a74\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001noExcept\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u306e\u6700\u9069\u5316\u3068\u691c\u8a3c\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-21\">noExcept\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u306e\u6700\u9069\u5316\u3068\u691c\u8a3c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u305f\u691c\u8a3c\u65b9\u6cd5<\/h3>\n\n\n\n<p>noexcept\u306e\u4f7f\u7528\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306e\u9759\u7684\u89e3\u6790\u624b\u6cd5\u3068\u30c4\u30fc\u30eb\u306e\u6d3b\u7528\u65b9\u6cd5\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=\"\">\/\/ clang-tidy\u7528\u306e\u6ce8\u91c8\u4f8b\nclass [[nodiscard]] VerifiableClass {\n    \/\/ clang-tidy: performance-noexcept-move-constructor\n    VerifiableClass(VerifiableClass&amp;&amp; other) noexcept;\n\n    \/\/ clang-tidy: performance-noexcept-destructor\n    ~VerifiableClass() noexcept;\n};\n\n\/\/ \u9759\u7684\u89e3\u6790\u3067\u691c\u51fa\u53ef\u80fd\u306a\u554f\u984c\u30d1\u30bf\u30fc\u30f3\nclass ProblematicClass {\n    std::vector&lt;int&gt; data_;\npublic:\n    \/\/ \u8b66\u544a: \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306epotential throw\n    ~ProblematicClass() {\n        data_.clear();  \/\/ \u6697\u9ed9\u7684\u306a\u30e1\u30e2\u30ea\u64cd\u4f5c\n    }\n\n    \/\/ \u8b66\u544a: \u30e0\u30fc\u30d6\u6f14\u7b97\u5b50\u3067\u306enoexcept\u6b20\u843d\n    ProblematicClass&amp; operator=(ProblematicClass&amp;&amp; other) {\n        data_ = std::move(other.data_);\n        return *this;\n    }\n};<\/pre>\n\n\n\n<p>\u9759\u7684\u89e3\u6790\u306e\u30c1\u30a7\u30c3\u30af\u9805\u76ee\uff1a<\/p>\n\n\n<div id=\"id-c341d2ed-3303-422b-804f-a39834a59dba\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9805\u76ee<\/th><th>\u8aac\u660e<\/th><th>\u30c4\u30fc\u30eb<\/th><\/tr><\/thead><tbody><tr><td>\u30e0\u30fc\u30d6\u64cd\u4f5c<\/td><td>noexcept\u306e\u6709\u7121\u3092\u30c1\u30a7\u30c3\u30af<\/td><td>clang-tidy<\/td><\/tr><tr><td>\u30c7\u30b9\u30c8\u30e9\u30af\u30bf<\/td><td>\u6697\u9ed9\u7684\u306a\u4f8b\u5916\u53ef\u80fd\u6027\u3092\u691c\u51fa<\/td><td>cppcheck<\/td><\/tr><tr><td>\u95a2\u6570\u5ba3\u8a00<\/td><td>noexcept\u6307\u5b9a\u306e\u4e00\u8cab\u6027\u78ba\u8a8d<\/td><td>VS Code C++ Extension<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u64cd\u4f5c<\/td><td>\u5b89\u5168\u3067\u306a\u3044\u64cd\u4f5c\u306e\u691c\u51fa<\/td><td>PVS-Studio<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">\u5b9f\u884c\u6642\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u8a08\u6e2c\u3068\u6539\u5584\u624b\u6cd5<\/h3>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c\u3068\u6700\u9069\u5316\u306e\u5b9f\u8df5\u7684\u624b\u6cd5\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;iostream&gt;\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c\u7528\u30af\u30e9\u30b9\nclass PerformanceTimer {\n    using Clock = std::chrono::high_resolution_clock;\n    using TimePoint = Clock::time_point;\n    using Duration = std::chrono::nanoseconds;\n\n    TimePoint start_;\n    const char* operation_name_;\n\npublic:\n    explicit PerformanceTimer(const char* name) noexcept\n        : start_(Clock::now())\n        , operation_name_(name) {}\n\n    ~PerformanceTimer() noexcept {\n        auto end = Clock::now();\n        auto duration = std::chrono::duration_cast&lt;Duration&gt;(end - start_);\n        std::cout &lt;&lt; operation_name_ &lt;&lt; \": \" \n                  &lt;&lt; duration.count() &lt;&lt; \" ns\\n\";\n    }\n};\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u306e\u4f8b\nvoid comparePerformance() {\n    const int ITERATIONS = 1000000;\n    std::vector&lt;std::string&gt; vec;\n    vec.reserve(ITERATIONS);  \/\/ \u4e8b\u524d\u306b\u5bb9\u91cf\u78ba\u4fdd\n\n    \/\/ noexcept\u306a\u3057\n    {\n        PerformanceTimer timer(\"Without noexcept\");\n        for (int i = 0; i &lt; ITERATIONS; ++i) {\n            vec.push_back(\"test\");\n        }\n    }\n\n    vec.clear();\n\n    \/\/ noexcept\u3042\u308a\n    {\n        PerformanceTimer timer(\"With noexcept\");\n        for (int i = 0; i &lt; ITERATIONS; ++i) {\n            vec.push_back(\"test\"_noexcept);  \/\/ \u4eee\u60f3\u306e\u6700\u9069\u5316\u3055\u308c\u305f\u6587\u5b57\u5217\n        }\n    }\n}<\/pre>\n\n\n\n<p>\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\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 OptimizedContainer {\n    static constexpr size_t INITIAL_CAPACITY = 1000;\n    std::vector&lt;int&gt; data_;\n\npublic:\n    OptimizedContainer() noexcept {\n        data_.reserve(INITIAL_CAPACITY);  \/\/ \u4e8b\u524d\u5272\u308a\u5f53\u3066\n    }\n\n    bool tryAdd(int value) noexcept {\n        if (data_.size() &lt; data_.capacity()) {\n            data_.push_back(value);\n            return true;\n        }\n        return false;\n    }\n\n    void optimize() noexcept {\n        data_.shrink_to_fit();  \/\/ \u672a\u4f7f\u7528\u30e1\u30e2\u30ea\u306e\u89e3\u653e\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30ad\u30e3\u30c3\u30b7\u30e5\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=\"\">template&lt;typename T&gt;\nclass CacheOptimized {\n    static constexpr size_t CACHE_LINE_SIZE = 64;\n    alignas(CACHE_LINE_SIZE) T data_;\n\npublic:\n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u3092\u8003\u616e\u3057\u305f\u64cd\u4f5c\n    void update(const T&amp; value) noexcept {\n        data_ = value;\n    }\n\n    T get() const noexcept {\n        return data_;\n    }\n};<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u74b0\u5883\u306e\u6574\u5099<\/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 BenchmarkEnvironment {\npublic:\n    static void setup() noexcept {\n        \/\/ CPU\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u306e\u8a2d\u5b9a\n        \/\/ \u512a\u5148\u5ea6\u306e\u8abf\u6574\n        \/\/ \u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u30bf\u30b9\u30af\u306e\u505c\u6b62\n    }\n\n    static void teardown() noexcept {\n        \/\/ \u74b0\u5883\u306e\u5fa9\u5143\n    }\n\n    template&lt;typename Func&gt;\n    static auto measure(Func&amp;&amp; func) noexcept {\n        setup();\n        auto result = std::forward&lt;Func&gt;(func)();\n        teardown();\n        return result;\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6700\u9069\u5316\u306e\u691c\u8a3c<\/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=\"\">template&lt;typename T&gt;\nclass OptimizationVerifier {\npublic:\n    static bool verify() noexcept {\n        bool all_passed = true;\n\n        \/\/ \u6a5f\u80fd\u30c6\u30b9\u30c8\n        all_passed &amp;= verifyFunctionality();\n\n        \/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c6\u30b9\u30c8\n        all_passed &amp;= verifyPerformance();\n\n        \/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u30c6\u30b9\u30c8\n        all_passed &amp;= verifyMemoryUsage();\n\n        return all_passed;\n    }\n\nprivate:\n    static bool verifyFunctionality() noexcept {\n        \/\/ \u6a5f\u80fd\u306e\u6b63\u78ba\u6027\u3092\u691c\u8a3c\n        return true;\n    }\n\n    static bool verifyPerformance() noexcept {\n        \/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8981\u4ef6\u3092\u691c\u8a3c\n        return true;\n    }\n\n    static bool verifyMemoryUsage() noexcept {\n        \/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u691c\u8a3c\n        return true;\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u3068\u691c\u8a3c\u624b\u6cd5\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u9ad8\u54c1\u8cea\u306aC++\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002noexcept\u306e\u4f7f\u7528\u306f\u3001\u5358\u306a\u308b\u4f8b\u5916\u5236\u5fa1\u4ee5\u4e0a\u306b\u3001\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u91cd\u8981\u306a\u6a5f\u80fd\u3067\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-2179","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\/2179","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=2179"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2179\/revisions"}],"predecessor-version":[{"id":2180,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2179\/revisions\/2180"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}