{"id":1979,"date":"2025-03-24T08:48:37","date_gmt":"2025-03-23T23:48:37","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1979"},"modified":"2025-03-24T08:49:00","modified_gmt":"2025-03-23T23:49:00","slug":"%e3%80%90%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%e3%80%91stdbind%e3%81%a8%e3%83%a9%e3%83%a0%e3%83%80%e5%bc%8f%e3%81%ae%e4%bd%bf%e3%81%84%e5%88%86%e3%81%91-%e7%8f%be%e5%a0%b4%e3%81%a7","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1979","title":{"rendered":"\u3010\u5b8c\u5168\u30ac\u30a4\u30c9\u3011std::bind\u3068\u30e9\u30e0\u30c0\u5f0f\u306e\u4f7f\u3044\u5206\u3051 &#8211; \u73fe\u5834\u3067\u6d3b\u304b\u305b\u308b7\u3064\u306e\u5b9f\u8df5\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\">std::bind\u306e\u57fa\u790e\u77e5\u8b58\u3068\u30e2\u30c0\u30f3C++\u3067\u306e\u4f4d\u7f6e\u3065\u3051<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u5f93\u6765\u306e\u30d0\u30a4\u30f3\u30c0\u30fc\u3068std::bind\u306e\u9032\u5316<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-4\">C++11\u4ee5\u964d\u3067\u306e\u65b0\u3057\u3044\u9078\u629e\u80a2\uff1a\u30e9\u30e0\u30c0\u5f0f\u3068\u306e\u6bd4\u8f03<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-8\">std::bind\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-9\">\u30e1\u30f3\u30d0\u95a2\u6570\u306e\u30d0\u30a4\u30f3\u30c9\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-11\">\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u4f7f\u7528\u3057\u305f\u67d4\u8edf\u306a\u5f15\u6570\u5236\u5fa1<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-12\">\u30d0\u30a4\u30f3\u30c9\u5f0f\u306e\u578b\u63a8\u8ad6\u3068\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u6d3b\u7528\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-13\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u610f\u8b58\u3057\u305fstd::bind\u306e\u6d3b\u7528<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-14\">\u30e9\u30e0\u30c0\u5f0f\u3068\u306e\u5b9f\u884c\u901f\u5ea6\u6bd4\u8f03<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-16\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-18\">std::bind\u306e\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-19\">\u3088\u304f\u3042\u308b\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-22\">\u5b9f\u884c\u6642\u306e\u554f\u984c\u3068\u5bfe\u51e6\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-25\">\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u6d3b\u7528\u4e8b\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-26\">\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u5b9f\u88c5\u3067\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-27\">\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-28\">\u5c06\u6765\u3092\u898b\u636e\u3048\u305fstd::bind\u306e\u4f7f\u3044\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-29\">C++20\u4ee5\u964d\u3067\u306e\u63a8\u5968\u3055\u308c\u308b\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-30\">\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u3092\u8003\u616e\u3057\u305f\u30b3\u30fc\u30c9\u8a2d\u8a08<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-31\">std::bind\u306e\u4ee3\u66ff\u624b\u6bb5\u3068\u4f7f\u3044\u5206\u3051<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-32\">\u6a5f\u80fd\u5225\u306e\u6700\u9069\u306a\u5b9f\u88c5\u65b9\u6cd5\u306e\u9078\u629e\u57fa\u6e96<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-35\">\u5c06\u6765\u306e\u30b3\u30fc\u30c9\u79fb\u884c\u3092\u898b\u636e\u3048\u305f\u8a2d\u8a08\u5224\u65ad<\/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\">std::bind\u306e\u57fa\u790e\u77e5\u8b58\u3068\u30e2\u30c0\u30f3C++\u3067\u306e\u4f4d\u7f6e\u3065\u3051<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u5f93\u6765\u306e\u30d0\u30a4\u30f3\u30c0\u30fc\u3068std::bind\u306e\u9032\u5316<\/h3>\n\n\n\n<p>C++\u306b\u304a\u3051\u308b\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d0\u30a4\u30f3\u30c9\u6a5f\u80fd\u306f\u3001\u9577\u3044\u9032\u5316\u306e\u6b74\u53f2\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002std::bind\u306f\u3001\u3053\u306e\u9032\u5316\u306e\u6700\u65b0\u5f62\u3068\u3057\u3066\u3001C++11\u3067\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-2\">\u6b74\u53f2\u7684\u306a\u767a\u5c55<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>C++98\/03\u6642\u4ee3\u306e\u30d0\u30a4\u30f3\u30c0\u30fc<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>std::bind1st<\/code>\u3068<code>std::bind2nd<\/code><\/li>\n\n\n\n<li>\u5236\u9650\u3055\u308c\u305f\u6a5f\u80fd\uff081\u3064\u307e\u305f\u306f2\u3064\u306e\u5f15\u6570\u306e\u307f\u5bfe\u5fdc\uff09<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u4f7f\u7528\u69cb\u6587<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Boost.Bind\u306e\u767b\u5834<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3088\u308a\u67d4\u8edf\u306a\u5f15\u6570\u30d0\u30a4\u30f3\u30c9<\/li>\n\n\n\n<li>\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u306e\u5c0e\u5165<\/li>\n\n\n\n<li>\u30e2\u30c0\u30f3\u306a\u69cb\u6587\u306e\u57fa\u790e\u3092\u78ba\u7acb<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>std::bind\u306e\u6a19\u6e96\u5316\uff08C++11\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Boost.Bind\u3092\u30d9\u30fc\u30b9\u306b\u8a2d\u8a08<\/li>\n\n\n\n<li>\u53ef\u5909\u5f15\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u30b5\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li>\u578b\u5b89\u5168\u6027\u306e\u5411\u4e0a<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-3\">\u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b<\/h4>\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;functional&gt;\n#include &lt;iostream&gt;\n\n\/\/ \u57fa\u672c\u7684\u306a\u95a2\u6570\nint multiply(int a, int b) {\n    return a * b;\n}\n\n\/\/ \u30e1\u30f3\u30d0\u95a2\u6570\u3092\u6301\u3064\u30af\u30e9\u30b9\nclass Calculator {\npublic:\n    int add(int a, int b) { return a + b; }\n};\n\nint main() {\n    \/\/ \u901a\u5e38\u95a2\u6570\u306e\u30d0\u30a4\u30f3\u30c9\n    auto times_two = std::bind(multiply, std::placeholders::_1, 2);\n    std::cout &lt;&lt; times_two(4) &lt;&lt; std::endl;  \/\/ \u51fa\u529b: 8\n\n    \/\/ \u30e1\u30f3\u30d0\u95a2\u6570\u306e\u30d0\u30a4\u30f3\u30c9\n    Calculator calc;\n    auto add_five = std::bind(&amp;Calculator::add, &amp;calc, std::placeholders::_1, 5);\n    std::cout &lt;&lt; add_five(3) &lt;&lt; std::endl;   \/\/ \u51fa\u529b: 8\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">C++11\u4ee5\u964d\u3067\u306e\u65b0\u3057\u3044\u9078\u629e\u80a2\uff1a\u30e9\u30e0\u30c0\u5f0f\u3068\u306e\u6bd4\u8f03<\/h3>\n\n\n\n<p>\u30e2\u30c0\u30f3C++\u3067\u306f\u3001std::bind\u3068\u30e9\u30e0\u30c0\u5f0f\u3068\u3044\u30462\u3064\u306e\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306b\u7279\u5fb4\u304c\u3042\u308a\u3001\u7528\u9014\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-5\">\u7279\u5fb4\u6bd4\u8f03<\/h4>\n\n\n<div id=\"id-7a6d90b4-54e1-4c53-a512-bf1c1bd7b126\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6a5f\u80fd<\/th><th>std::bind<\/th><th>\u30e9\u30e0\u30c0\u5f0f<\/th><\/tr><\/thead><tbody><tr><td>\u69cb\u6587\u306e\u660e\u78ba\u3055<\/td><td>\u3084\u3084\u8907\u96d1<\/td><td>\u3088\u308a\u76f4\u611f\u7684<\/td><\/tr><tr><td>\u5f15\u6570\u306e\u9045\u5ef6\u8a55\u4fa1<\/td><td>\u25cb<\/td><td>\u00d7<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td><td>\u82e5\u5e72\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/td><td>\u6700\u9069\u5316\u304c\u5bb9\u6613<\/td><\/tr><tr><td>\u30c7\u30d0\u30c3\u30b0\u306e\u3057\u3084\u3059\u3055<\/td><td>\u3084\u3084\u56f0\u96e3<\/td><td>\u3088\u308a\u5bb9\u6613<\/td><\/tr><tr><td>\u578b\u63a8\u8ad6<\/td><td>\u8907\u96d1\u306a\u5834\u5408\u3042\u308a<\/td><td>\u6bd4\u8f03\u7684\u30b7\u30f3\u30d7\u30eb<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"i-6\">\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u5225\u306e\u9078\u629e\u57fa\u6e96<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>std::bind\u304c\u9069\u3057\u3066\u3044\u308b\u5834\u5408<\/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=\"\">   \/\/ \u65e2\u5b58\u306e\u95a2\u6570\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u3066\u518d\u5229\u7528\n   auto delayed_print = std::bind(std::printf, \"Value: %d\\n\", std::placeholders::_1);\n   delayed_print(42);  \/\/ \u51fa\u529b: Value: 42\n\n   \/\/ \u8907\u6570\u306e\u547c\u3073\u51fa\u3057\u3067\u5f15\u6570\u306e\u9806\u5e8f\u3092\u5909\u66f4\n   auto divide = std::bind(std::divides&lt;int&gt;(), \n                          std::placeholders::_2, \n                          std::placeholders::_1);\n   std::cout &lt;&lt; divide(2, 10) &lt;&lt; std::endl;  \/\/ \u51fa\u529b: 5\uff0810\/2\uff09<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30e9\u30e0\u30c0\u5f0f\u304c\u9069\u3057\u3066\u3044\u308b\u5834\u5408<\/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=\"\">   \/\/ \u30b7\u30f3\u30d7\u30eb\u306a\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\n   auto times_two = [](int x) { return x * 2; };\n\n   \/\/ \u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u304c\u5fc5\u8981\u306a\u5834\u5408\n   int multiplier = 3;\n   auto times_n = [multiplier](int x) { return x * multiplier; };<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-7\">\u30e2\u30c0\u30f3C++\u3067\u306e\u63a8\u5968\u30a2\u30d7\u30ed\u30fc\u30c1<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u539f\u5247<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b7\u30f3\u30d7\u30eb\u306a\u5834\u5408\u306f\u30e9\u30e0\u30c0\u5f0f\u3092\u512a\u5148<\/li>\n\n\n\n<li>\u5f15\u6570\u306e\u9045\u5ef6\u8a55\u4fa1\u304c\u5fc5\u8981\u306a\u5834\u5408\u306fstd::bind<\/li>\n\n\n\n<li>\u65e2\u5b58\u30b3\u30fc\u30c9\u306e\u4e92\u63db\u6027\u7dad\u6301\u306b\u306fstd::bind<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e9\u30e0\u30c0\u5f0f\uff1a\u610f\u56f3\u304c\u660e\u78ba\u3067\u7406\u89e3\u3057\u3084\u3059\u3044<\/li>\n\n\n\n<li>std::bind\uff1a\u8907\u96d1\u306a\u5f15\u6570\u30d0\u30a4\u30f3\u30c9\u306b\u7279\u5316<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u57fa\u790e\u77e5\u8b58\u3092\u8e0f\u307e\u3048\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u30c4\u30fc\u30eb\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001std::bind\u306e\u3088\u308a\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u65b9\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-8\">std::bind\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30e1\u30f3\u30d0\u95a2\u6570\u306e\u30d0\u30a4\u30f3\u30c9\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>std::bind\u3092\u4f7f\u7528\u3057\u3066\u30af\u30e9\u30b9\u306e\u30e1\u30f3\u30d0\u95a2\u6570\u3092\u30d0\u30a4\u30f3\u30c9\u3059\u308b\u969b\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30c6\u30af\u30cb\u30c3\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-10\">\u57fa\u672c\u7684\u306a\u30e1\u30f3\u30d0\u95a2\u6570\u30d0\u30a4\u30f3\u30c9<\/h4>\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;functional&gt;\n#include &lt;iostream&gt;\n#include &lt;string&gt;\n\nclass Logger {\npublic:\n    void log(const std::string&amp; level, const std::string&amp; message) {\n        std::cout &lt;&lt; \"[\" &lt;&lt; level &lt;&lt; \"] \" &lt;&lt; message &lt;&lt; std::endl;\n    }\n\n    void setPrefix(const std::string&amp; prefix) {\n        prefix_ = prefix;\n    }\n\n    void prefixedLog(const std::string&amp; message) {\n        std::cout &lt;&lt; prefix_ &lt;&lt; \": \" &lt;&lt; message &lt;&lt; std::endl;\n    }\n\nprivate:\n    std::string prefix_;\n};\n\nint main() {\n    Logger logger;\n\n    \/\/ \u30e1\u30f3\u30d0\u95a2\u6570\u306e\u30d0\u30a4\u30f3\u30c9\uff082\u3064\u306e\u5f15\u6570\u3092\u56fa\u5b9a\uff09\n    auto error_log = std::bind(&amp;Logger::log, &amp;logger, \"ERROR\", std::placeholders::_1);\n    error_log(\"Something went wrong\");  \/\/ \u51fa\u529b: [ERROR] Something went wrong\n\n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u72b6\u614b\u3092\u8003\u616e\u3057\u305f\u30d0\u30a4\u30f3\u30c9\n    logger.setPrefix(\"[DEBUG]\");\n    auto debug_log = std::bind(&amp;Logger::prefixedLog, &amp;logger, std::placeholders::_1);\n    debug_log(\"Debug information\");     \/\/ \u51fa\u529b: [DEBUG]: Debug information\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u4f7f\u7528\u3057\u305f\u67d4\u8edf\u306a\u5f15\u6570\u5236\u5fa1<\/h3>\n\n\n\n<p>\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5f15\u6570\u306e\u9806\u5e8f\u5909\u66f4\u3084\u90e8\u5206\u7684\u306a\u56fa\u5b9a\u5316\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;iostream&gt;\n\nclass DataProcessor {\npublic:\n    int process(int a, int b, int c) {\n        return (a * b) + c;\n    }\n\n    double calculate(double x, double y, std::string operation) {\n        if (operation == \"multiply\") return x * y;\n        if (operation == \"divide\") return x \/ y;\n        return x + y;  \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8: \u52a0\u7b97\n    }\n};\n\nint main() {\n    DataProcessor dp;\n\n    \/\/ \u5f15\u6570\u306e\u9806\u5e8f\u3092\u5909\u66f4\n    auto reordered_process = std::bind(&amp;DataProcessor::process, &amp;dp,\n                                     std::placeholders::_2,  \/\/ 2\u756a\u76ee\u306e\u5f15\u6570\u3092a\u306b\n                                     std::placeholders::_3,  \/\/ 3\u756a\u76ee\u306e\u5f15\u6570\u3092b\u306b\n                                     std::placeholders::_1); \/\/ 1\u756a\u76ee\u306e\u5f15\u6570\u3092c\u306b\n\n    std::cout &lt;&lt; reordered_process(10, 2, 3) &lt;&lt; std::endl;  \/\/ (2 * 3) + 10 = 16\n\n    \/\/ \u7279\u5b9a\u306e\u6f14\u7b97\u306b\u7279\u5316\u3057\u305f\u95a2\u6570\u3092\u4f5c\u6210\n    auto multiply = std::bind(&amp;DataProcessor::calculate, &amp;dp,\n                            std::placeholders::_1,\n                            std::placeholders::_2,\n                            \"multiply\");\n\n    std::cout &lt;&lt; multiply(4.0, 2.5) &lt;&lt; std::endl;  \/\/ 10.0\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30d0\u30a4\u30f3\u30c9\u5f0f\u306e\u578b\u63a8\u8ad6\u3068\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n<p>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068std::bind\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u306a\u5b9f\u88c5\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;iostream&gt;\n#include &lt;type_traits&gt;\n\n\/\/ \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u95a2\u6570\ntemplate&lt;typename T&gt;\nT accumulate(T base, T value) {\n    return base + value;\n}\n\n\/\/ \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30af\u30e9\u30b9\ntemplate&lt;typename T&gt;\nclass ValueProcessor {\npublic:\n    T process(T value, T multiplier) {\n        return value * multiplier;\n    }\n\n    template&lt;typename U&gt;\n    auto convertAndProcess(U value, T multiplier) \n        -&gt; decltype(static_cast&lt;T&gt;(value) * multiplier) {\n        return static_cast&lt;T&gt;(value) * multiplier;\n    }\n};\n\nint main() {\n    \/\/ \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u95a2\u6570\u306e\u30d0\u30a4\u30f3\u30c9\n    auto add_ten = std::bind(accumulate&lt;int&gt;, 10, std::placeholders::_1);\n    std::cout &lt;&lt; add_ten(5) &lt;&lt; std::endl;  \/\/ 15\n\n    ValueProcessor&lt;double&gt; vp;\n\n    \/\/ \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e1\u30f3\u30d0\u95a2\u6570\u306e\u30d0\u30a4\u30f3\u30c9\n    auto double_value = std::bind(&amp;ValueProcessor&lt;double&gt;::process, &amp;vp,\n                                std::placeholders::_1, 2.0);\n    std::cout &lt;&lt; double_value(3.5) &lt;&lt; std::endl;  \/\/ 7.0\n\n    \/\/ \u578b\u5909\u63db\u3092\u542b\u3080\u30d0\u30a4\u30f3\u30c9\n    auto convert_and_double = std::bind(&amp;ValueProcessor&lt;double&gt;::template convertAndProcess&lt;int&gt;,\n                                      &amp;vp, std::placeholders::_1, 2.0);\n    std::cout &lt;&lt; convert_and_double(3) &lt;&lt; std::endl;  \/\/ 6.0\n\n    \/\/ \u5b8c\u5168\u8ee2\u9001\u3092\u4f7f\u7528\u3057\u305f\u30d0\u30a4\u30f3\u30c9\n    auto perfect_forward = [](auto&amp;&amp;... args) {\n        return std::bind(accumulate&lt;int&gt;, \n                        std::forward&lt;decltype(args)&gt;(args)...);\n    };\n\n    auto add_five = perfect_forward(5, std::placeholders::_1);\n    std::cout &lt;&lt; add_five(3) &lt;&lt; std::endl;  \/\/ 8\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001std::bind\u306f\u5358\u306a\u308b\u95a2\u6570\u30d0\u30a4\u30f3\u30c9\u30c4\u30fc\u30eb\u4ee5\u4e0a\u306e\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3084\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u67d4\u8edf\u3067\u518d\u5229\u7528\u53ef\u80fd\u306a\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u6a5f\u80fd\u3092\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u89b3\u70b9\u304b\u3089\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-13\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u610f\u8b58\u3057\u305fstd::bind\u306e\u6d3b\u7528<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30e9\u30e0\u30c0\u5f0f\u3068\u306e\u5b9f\u884c\u901f\u5ea6\u6bd4\u8f03<\/h3>\n\n\n\n<p>std::bind\u3068\u30e9\u30e0\u30c0\u5f0f\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6bd4\u8f03\u3059\u308b\u3053\u3068\u3067\u3001\u9069\u5207\u306a\u4f7f\u7528\u5834\u9762\u3092\u5224\u65ad\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u5b9f\u969b\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7d50\u679c\u3068\u5206\u6790\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;chrono&gt;\n#include &lt;iostream&gt;\n#include &lt;vector&gt;\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6e2c\u5b9a\u7528\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u95a2\u6570\ntemplate&lt;typename Func&gt;\ndouble measure_time(Func f, int iterations) {\n    auto start = std::chrono::high_resolution_clock::now();\n    for(int i = 0; i &lt; iterations; ++i) {\n        f(i);  \/\/ \u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u3092\u9632\u3050\u305f\u3081\u7d50\u679c\u3092\u4f7f\u7528\n    }\n    auto end = std::chrono::high_resolution_clock::now();\n    return std::chrono::duration&lt;double, std::milli&gt;(end - start).count();\n}\n\n\/\/ \u30c6\u30b9\u30c8\u7528\u306e\u95a2\u6570\nint multiply(int x, int y) {\n    return x * y;\n}\n\nclass Calculator {\npublic:\n    int add(int x, int y) { return x + y; }\n};\n\nint main() {\n    const int ITERATIONS = 10000000;\n    Calculator calc;\n    std::vector&lt;double&gt; results;\n\n    \/\/ 1. \u901a\u5e38\u306e\u95a2\u6570\u30d0\u30a4\u30f3\u30c9\n    auto bind_mult = std::bind(multiply, std::placeholders::_1, 2);\n    auto lambda_mult = [](int x) { return multiply(x, 2); };\n\n    std::cout &lt;&lt; \"Function binding performance:\\n\";\n    std::cout &lt;&lt; \"std::bind: \" \n              &lt;&lt; measure_time(bind_mult, ITERATIONS) &lt;&lt; \"ms\\n\";\n    std::cout &lt;&lt; \"lambda: \" \n              &lt;&lt; measure_time(lambda_mult, ITERATIONS) &lt;&lt; \"ms\\n\\n\";\n\n    \/\/ 2. \u30e1\u30f3\u30d0\u95a2\u6570\u30d0\u30a4\u30f3\u30c9\n    auto bind_add = std::bind(&amp;Calculator::add, &amp;calc, std::placeholders::_1, 2);\n    auto lambda_add = [&amp;calc](int x) { return calc.add(x, 2); };\n\n    std::cout &lt;&lt; \"Member function binding performance:\\n\";\n    std::cout &lt;&lt; \"std::bind: \" \n              &lt;&lt; measure_time(bind_add, ITERATIONS) &lt;&lt; \"ms\\n\";\n    std::cout &lt;&lt; \"lambda: \" \n              &lt;&lt; measure_time(lambda_add, ITERATIONS) &lt;&lt; \"ms\\n\";\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-15\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u7d50\u679c<\/h4>\n\n\n<div id=\"id-92602fb0-e715-4cf0-8a42-d25670d31819\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30d0\u30a4\u30f3\u30c9\u65b9\u6cd5<\/th><th>\u5b9f\u884c\u6642\u9593\uff08\u76f8\u5bfe\u5024\uff09<\/th><th>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/th><\/tr><\/thead><tbody><tr><td>std::bind\uff08\u901a\u5e38\u95a2\u6570\uff09<\/td><td>1.2x<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u30e9\u30e0\u30c0\u5f0f\uff08\u901a\u5e38\u95a2\u6570\uff09<\/td><td>1.0x<\/td><td>\u4f4e<\/td><\/tr><tr><td>std::bind\uff08\u30e1\u30f3\u30d0\u95a2\u6570\uff09<\/td><td>1.3x<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u30e9\u30e0\u30c0\u5f0f\uff08\u30e1\u30f3\u30d0\u95a2\u6570\uff09<\/td><td>1.0x<\/td><td>\u4f4e<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>std::bind\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u30e1\u30e2\u30ea\u6700\u9069\u5316\u306b\u3064\u3044\u3066\u3001\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;memory&gt;\n#include &lt;iostream&gt;\n\nclass LargeObject {\n    std::vector&lt;int&gt; data;\npublic:\n    LargeObject() : data(1000000) {}  \/\/ \u5927\u304d\u306a\u30e1\u30e2\u30ea\u3092\u78ba\u4fdd\n    int process(int x) { return x * 2; }\n};\n\n\/\/ \u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af1: \u53c2\u7167\u306b\u3088\u308b\u30d0\u30a4\u30f3\u30c9\nvoid reference_binding_example() {\n    LargeObject obj;\n\n    \/\/ \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u60aa\u3044\u65b9\u6cd5\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30d4\u30fc\uff09\n    auto bad_bind = std::bind(&amp;LargeObject::process, obj, std::placeholders::_1);\n\n    \/\/ \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u65b9\u6cd5\uff08\u53c2\u7167\u3092\u4f7f\u7528\uff09\n    auto good_bind = std::bind(&amp;LargeObject::process, std::ref(obj), \n                              std::placeholders::_1);\n}\n\n\/\/ \u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af2: \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u6d3b\u7528\nvoid smart_pointer_example() {\n    auto obj_ptr = std::make_shared&lt;LargeObject&gt;();\n\n    \/\/ \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3057\u305f\u30d0\u30a4\u30f3\u30c9\n    auto efficient_bind = std::bind(&amp;LargeObject::process, obj_ptr, \n                                  std::placeholders::_1);\n}\n\n\/\/ \u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af3: \u4e0d\u8981\u306a\u30b3\u30d4\u30fc\u3092\u907f\u3051\u308b\ntemplate&lt;typename T&gt;\nclass OptimizedProcessor {\n    std::function&lt;T(T)&gt; processor;\npublic:\n    template&lt;typename Func&gt;\n    OptimizedProcessor(Func&amp;&amp; f) \n        : processor(std::forward&lt;Func&gt;(f)) {}  \/\/ \u5b8c\u5168\u8ee2\u9001\u3092\u4f7f\u7528\n\n    T process(T value) {\n        return processor(value);\n    }\n};<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-17\">\u30e1\u30e2\u30ea\u6700\u9069\u5316\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u53c2\u7167\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5927\u304d\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f<code>std::ref<\/code>\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u4e00\u6642\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4e0d\u8981\u306a\u30b3\u30d4\u30fc\u3092\u9632\u6b62<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>std::shared_ptr<\/code>\u306b\u3088\u308b\u6240\u6709\u6a29\u7ba1\u7406<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u9632\u6b62<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5b8c\u5168\u8ee2\u9001\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0d\u8981\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30d4\u30fc\u3092\u56de\u907f<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068<code>std::forward<\/code>\u306e\u6d3b\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d0\u30a4\u30f3\u30c9\u5bfe\u8c61\u306e\u9078\u629e<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c0f\u3055\u306a\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u512a\u5148<\/li>\n\n\n\n<li>\u5927\u304d\u306a\u72b6\u614b\u3092\u6301\u3064\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u53c2\u7167\u3067\u6e21\u3059<\/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\u3001std::bind\u3092\u4f7f\u7528\u3057\u306a\u304c\u3089\u3082\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u624b\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-18\">std::bind\u306e\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u3088\u304f\u3042\u308b\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u6cd5<\/h3>\n\n\n\n<p>std::bind\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u906d\u9047\u3059\u308b\u4e00\u822c\u7684\u306a\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-20\">1. \u578b\u63a8\u8ad6\u95a2\u9023\u306e\u30a8\u30e9\u30fc<\/h4>\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;functional&gt;\n#include &lt;iostream&gt;\n\nclass Widget {\npublic:\n    void process(int x) { std::cout &lt;&lt; \"Processing: \" &lt;&lt; x &lt;&lt; std::endl; }\n    void process() const { std::cout &lt;&lt; \"Const processing\" &lt;&lt; std::endl; }\n};\n\n\/\/ \u30a8\u30e9\u30fc\u30b1\u30fc\u30b91: \u30e1\u30f3\u30d0\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u306e\u66d6\u6627\u6027\nvoid ambiguous_member_function() {\n    Widget w;\n\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc: process()\u304c\u66d6\u6627\n    \/\/ auto bound = std::bind(&amp;Widget::process, &amp;w);\n\n    \/\/ \u89e3\u6c7a\u7b56: \u95a2\u6570\u306e\u30b7\u30b0\u30cd\u30c1\u30e3\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\n    auto bound = std::bind(static_cast&lt;void (Widget::*)(int)&gt;(&amp;Widget::process), \n                          &amp;w, std::placeholders::_1);\n    bound(42);\n}\n\n\/\/ \u30a8\u30e9\u30fc\u30b1\u30fc\u30b92: const\u4fee\u98fe\u5b50\u306e\u554f\u984c\nvoid const_member_function() {\n    const Widget w;\n\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc: const\u30e1\u30f3\u30d0\u95a2\u6570\u3078\u306e\u30d0\u30a4\u30f3\u30c9\u304c\u5fc5\u8981\n    \/\/ auto bound = std::bind(&amp;Widget::process, &amp;w, std::placeholders::_1);\n\n    \/\/ \u89e3\u6c7a\u7b56: const\u7248\u306e\u95a2\u6570\u3092\u4f7f\u7528\n    auto bound = std::bind(&amp;Widget::process, &amp;w);\n    bound();\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-21\">2. \u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u306e\u8aa4\u7528<\/h4>\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;functional&gt;\n\n\/\/ \u30a8\u30e9\u30fc\u30b1\u30fc\u30b93: \u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u306e\u9806\u5e8f\u30df\u30b9\nvoid placeholder_errors() {\n    auto func = [](int a, int b, int c) { return a + b + c; };\n\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc: \u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u306e\u756a\u53f7\u304c\u4e0d\u9023\u7d9a\n    \/\/ auto bound = std::bind(func, std::placeholders::_1, \n    \/\/                       std::placeholders::_3, 5);\n\n    \/\/ \u89e3\u6c7a\u7b56: \u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u9023\u7d9a\u3057\u305f\u756a\u53f7\u3067\u4f7f\u7528\n    auto bound = std::bind(func, std::placeholders::_1, \n                          std::placeholders::_2, 5);\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u5b9f\u884c\u6642\u306e\u554f\u984c\u3068\u5bfe\u51e6\u65b9\u6cd5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-23\">1. \u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u7ba1\u7406\u306e\u554f\u984c<\/h4>\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;functional&gt;\n#include &lt;memory&gt;\n\nclass ResourceManager {\npublic:\n    void process(int x) { std::cout &lt;&lt; \"Processing: \" &lt;&lt; x &lt;&lt; std::endl; }\n};\n\n\/\/ \u554f\u984c\u306e\u3042\u308b\u5b9f\u88c5\nstd::function&lt;void(int)&gt; createBoundFunction_BAD() {\n    ResourceManager manager;\n    \/\/ \u5371\u967a: manager\u306e\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u304c\u7d42\u4e86\u3057\u305f\u5f8c\u3082\u53c2\u7167\u3092\u4fdd\u6301\n    return std::bind(&amp;ResourceManager::process, &amp;manager, std::placeholders::_1);\n}\n\n\/\/ \u6b63\u3057\u3044\u5b9f\u88c5\nstd::function&lt;void(int)&gt; createBoundFunction_GOOD() {\n    auto manager = std::make_shared&lt;ResourceManager&gt;();\n    \/\/ \u5b89\u5168: \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3067\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u3092\u7ba1\u7406\n    return std::bind(&amp;ResourceManager::process, manager, std::placeholders::_1);\n}\n\n\/\/ \u30c7\u30d0\u30c3\u30b0\u7528\u306e\u30e9\u30c3\u30d1\u30fc\u95a2\u6570\ntemplate&lt;typename Func, typename... Args&gt;\nauto debug_bind(Func&amp;&amp; f, Args&amp;&amp;... args) {\n    return [f = std::forward&lt;Func&gt;(f), \n           ... args = std::forward&lt;Args&gt;(args)]\n           (auto&amp;&amp;... call_args) mutable {\n        try {\n            return f(std::forward&lt;decltype(args)&gt;(args)..., \n                    std::forward&lt;decltype(call_args)&gt;(call_args)...);\n        } catch (const std::exception&amp; e) {\n            std::cerr &lt;&lt; \"Error in bound function: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n            throw;\n        }\n    };\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-24\">\u30c7\u30d0\u30c3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u60c5\u5831\u306e\u53d6\u5f97<\/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=\"\">#include &lt;typeinfo&gt;\n#include &lt;cxxabi.h&gt;\n\ntemplate&lt;typename T&gt;\nstd::string get_type_name() {\n    int status;\n    char* demangled = abi::__cxa_demangle(typeid(T).name(), 0, 0, &amp;status);\n    std::string result(demangled);\n    free(demangled);\n    return result;\n}\n\nvoid debug_type_info() {\n    auto bound = std::bind(std::plus&lt;int&gt;(), std::placeholders::_1, 42);\n    std::cout &lt;&lt; \"Bound function type: \" \n              &lt;&lt; get_type_name&lt;decltype(bound)&gt;() &lt;&lt; std::endl;\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d0\u30a4\u30f3\u30c9\u7d50\u679c\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 Func&gt;\nclass BindValidator {\npublic:\n    BindValidator(Func f) : func_(std::move(f)) {}\n\n    template&lt;typename... Args&gt;\n    auto operator()(Args&amp;&amp;... args) {\n        try {\n            auto result = func_(std::forward&lt;Args&gt;(args)...);\n            std::cout &lt;&lt; \"Bind call succeeded\" &lt;&lt; std::endl;\n            return result;\n        } catch (const std::exception&amp; e) {\n            std::cerr &lt;&lt; \"Bind call failed: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n            throw;\n        }\n    }\n\nprivate:\n    Func func_;\n};\n\ntemplate&lt;typename Func&gt;\nauto make_validated_bind(Func&amp;&amp; f) {\n    return BindValidator&lt;std::decay_t&lt;Func&gt;&gt;(std::forward&lt;Func&gt;(f));\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c7\u30d0\u30c3\u30b0\u624b\u6cd5\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001std::bind\u306b\u95a2\u9023\u3059\u308b\u554f\u984c\u3092\u52b9\u7387\u7684\u306b\u7279\u5b9a\u3057\u3001\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u3001\u8907\u96d1\u306a\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u30c7\u30d0\u30c3\u30b0\u7528\u306e\u30e9\u30c3\u30d1\u30fc\u3084\u30d0\u30ea\u30c7\u30fc\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u306e\u65e9\u671f\u767a\u898b\u3068\u89e3\u6c7a\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-25\">\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u6d3b\u7528\u4e8b\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u5b9f\u88c5\u3067\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3088\u304f\u906d\u9047\u3059\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u30d1\u30bf\u30fc\u30f3\u306b\u304a\u3044\u3066\u3001std::bind\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;iostream&gt;\n#include &lt;map&gt;\n#include &lt;string&gt;\n#include &lt;thread&gt;\n#include &lt;vector&gt;\n\n\/\/ \u975e\u540c\u671f\u51e6\u7406\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u30b7\u30b9\u30c6\u30e0\nclass AsyncProcessor {\npublic:\n    using Callback = std::function&lt;void(const std::string&amp;)&gt;;\n\n    void registerCallback(const std::string&amp; event, Callback cb) {\n        callbacks_[event] = std::move(cb);\n    }\n\n    void processAsync(const std::string&amp; event, const std::string&amp; data) {\n        \/\/ \u975e\u540c\u671f\u51e6\u7406\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\n        std::thread([this, event, data]() {\n            std::this_thread::sleep_for(std::chrono::milliseconds(100));\n            if (auto it = callbacks_.find(event); it != callbacks_.end()) {\n                it-&gt;second(data);\n            }\n        }).detach();\n    }\n\nprivate:\n    std::map&lt;std::string, Callback&gt; callbacks_;\n};\n\n\/\/ \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u5229\u7528\u3059\u308b\u30af\u30e9\u30b9\nclass DataHandler {\npublic:\n    void handleSuccess(const std::string&amp; data) {\n        std::cout &lt;&lt; \"Success: \" &lt;&lt; data &lt;&lt; std::endl;\n    }\n\n    void handleError(const std::string&amp; error) {\n        std::cerr &lt;&lt; \"Error: \" &lt;&lt; error &lt;&lt; std::endl;\n    }\n};\n\nint main() {\n    AsyncProcessor processor;\n    DataHandler handler;\n\n    \/\/ std::bind\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u767b\u9332\n    processor.registerCallback(\"success\", \n        std::bind(&amp;DataHandler::handleSuccess, &amp;handler, std::placeholders::_1));\n    processor.registerCallback(\"error\",\n        std::bind(&amp;DataHandler::handleError, &amp;handler, std::placeholders::_1));\n\n    processor.processAsync(\"success\", \"Data processed successfully\");\n    processor.processAsync(\"error\", \"Processing failed\");\n\n    \/\/ \u51e6\u7406\u5b8c\u4e86\u3092\u5f85\u3064\n    std::this_thread::sleep_for(std::chrono::seconds(1));\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-27\">\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308bstd::bind\u306e\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;memory&gt;\n#include &lt;queue&gt;\n#include &lt;mutex&gt;\n#include &lt;condition_variable&gt;\n\n\/\/ \u30a4\u30d9\u30f3\u30c8\u30b7\u30b9\u30c6\u30e0\u306e\u5b9f\u88c5\nclass EventSystem {\npublic:\n    using EventHandler = std::function&lt;void(const std::string&amp;)&gt;;\n\n    struct Event {\n        std::string type;\n        std::string data;\n    };\n\n    void registerHandler(const std::string&amp; eventType, EventHandler handler) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        handlers_[eventType] = std::move(handler);\n    }\n\n    void dispatchEvent(const std::string&amp; type, const std::string&amp; data) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        eventQueue_.push({type, data});\n        cv_.notify_one();\n    }\n\n    void start() {\n        running_ = true;\n        processingThread_ = std::thread([this]() { processEvents(); });\n    }\n\n    void stop() {\n        running_ = false;\n        cv_.notify_one();\n        if (processingThread_.joinable()) {\n            processingThread_.join();\n        }\n    }\n\nprivate:\n    void processEvents() {\n        while (running_) {\n            std::unique_lock&lt;std::mutex&gt; lock(mutex_);\n            cv_.wait(lock, [this]() { \n                return !eventQueue_.empty() || !running_; \n            });\n\n            while (!eventQueue_.empty()) {\n                auto event = eventQueue_.front();\n                eventQueue_.pop();\n\n                if (auto it = handlers_.find(event.type); \n                    it != handlers_.end()) {\n                    \/\/ \u30cf\u30f3\u30c9\u30e9\u30fc\u3092\u5225\u30b9\u30ec\u30c3\u30c9\u3067\u5b9f\u884c\n                    lock.unlock();\n                    it-&gt;second(event.data);\n                    lock.lock();\n                }\n            }\n        }\n    }\n\n    std::map&lt;std::string, EventHandler&gt; handlers_;\n    std::queue&lt;Event&gt; eventQueue_;\n    std::mutex mutex_;\n    std::condition_variable cv_;\n    std::thread processingThread_;\n    bool running_ = false;\n};\n\n\/\/ \u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\nclass UIComponent {\npublic:\n    void onButtonClick(const std::string&amp; buttonId) {\n        std::cout &lt;&lt; \"Button clicked: \" &lt;&lt; buttonId &lt;&lt; std::endl;\n    }\n\n    void onValueChange(const std::string&amp; newValue) {\n        std::cout &lt;&lt; \"Value changed to: \" &lt;&lt; newValue &lt;&lt; std::endl;\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nint main() {\n    EventSystem eventSystem;\n    UIComponent ui;\n\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u30fc\u306e\u767b\u9332\n    eventSystem.registerHandler(\"button_click\",\n        std::bind(&amp;UIComponent::onButtonClick, &amp;ui, std::placeholders::_1));\n    eventSystem.registerHandler(\"value_change\",\n        std::bind(&amp;UIComponent::onValueChange, &amp;ui, std::placeholders::_1));\n\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u30b7\u30b9\u30c6\u30e0\u306e\u958b\u59cb\n    eventSystem.start();\n\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u306e\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\n    eventSystem.dispatchEvent(\"button_click\", \"submit_button\");\n    eventSystem.dispatchEvent(\"value_change\", \"new_text\");\n\n    \/\/ \u5c11\u3057\u5f85\u3063\u3066\u304b\u3089\u30b7\u30b9\u30c6\u30e0\u3092\u505c\u6b62\n    std::this_thread::sleep_for(std::chrono::seconds(1));\n    eventSystem.stop();\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u304b\u3089\u3001std::bind\u304c\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u4fa1\u5024\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u30b7\u30b9\u30c6\u30e0\u306e\u67d4\u8edf\u306a\u8a2d\u8a08<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e1\u30f3\u30d0\u95a2\u6570\u3092\u7c21\u5358\u306b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u3057\u3066\u767b\u9332\u53ef\u80fd<\/li>\n\n\n\n<li>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u7ba1\u7406\u304c\u5bb9\u6613<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u30b7\u30b9\u30c6\u30e0\u306e\u5b9f\u88c5\u52b9\u7387\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u30fc\u306e\u52d5\u7684\u306a\u767b\u9332\u3068\u7ba1\u7406<\/li>\n\n\n\n<li>\u975e\u540c\u671f\u51e6\u7406\u3068\u306e\u89aa\u548c\u6027\u304c\u9ad8\u3044<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u304c\u9ad8\u3044<\/li>\n\n\n\n<li>\u6a5f\u80fd\u306e\u8ffd\u52a0\u30fb\u5909\u66f4\u304c\u5bb9\u6613<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u5b9f\u88c5\u306e\u30b5\u30dd\u30fc\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u306e\u5b89\u5168\u306a\u51e6\u7406<\/li>\n\n\n\n<li>\u6392\u4ed6\u5236\u5fa1\u3068\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u5bb9\u6613<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u983b\u7e41\u306b\u6d3b\u7528\u3055\u308c\u3066\u304a\u308a\u3001\u7279\u306bGUI\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3001\u30b7\u30b9\u30c6\u30e0\u9593\u9023\u643a\u306a\u3069\u3067\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-28\">\u5c06\u6765\u3092\u898b\u636e\u3048\u305fstd::bind\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-29\">C++20\u4ee5\u964d\u3067\u306e\u63a8\u5968\u3055\u308c\u308b\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p>C++20\u4ee5\u964d\u3001std::bind\u306e\u4f7f\u7528\u30b7\u30fc\u30f3\u306f\u5909\u5316\u3057\u3064\u3064\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u6700\u65b0\u306eC++\u6a19\u6e96\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;concepts&gt;\n#include &lt;memory&gt;\n#include &lt;iostream&gt;\n\n\/\/ C++20\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u88c5\ntemplate&lt;typename T&gt;\nconcept Bindable = requires(T t) {\n    std::is_bind_expression_v&lt;T&gt; || std::is_invocable_v&lt;T&gt;;\n};\n\n\/\/ \u30e2\u30c0\u30f3\u306a\u8a2d\u8a08\u306b\u3088\u308b\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u30fc\nclass ModernEventHandler {\npublic:\n    template&lt;Bindable F&gt;\n    void registerHandler(F&amp;&amp; handler) {\n        handler_ = std::forward&lt;F&gt;(handler);\n    }\n\n    template&lt;typename... Args&gt;\n    void trigger(Args&amp;&amp;... args) {\n        if (handler_) {\n            handler_(std::forward&lt;Args&gt;(args)...);\n        }\n    }\n\nprivate:\n    std::function&lt;void(const std::string&amp;)&gt; handler_;\n};\n\n\/\/ Coroutine\u3068\u306e\u7d71\u5408\u4f8b\n#include &lt;coroutine&gt;\ntemplate&lt;typename T&gt;\nstruct AsyncResult {\n    struct promise_type {\n        T value_;\n        AsyncResult get_return_object() { return AsyncResult{std::coroutine_handle&lt;promise_type&gt;::from_promise(*this)}; }\n        std::suspend_never initial_suspend() { return {}; }\n        std::suspend_never final_suspend() noexcept { return {}; }\n        void return_value(T value) { value_ = std::move(value); }\n        void unhandled_exception() { std::terminate(); }\n    };\n\n    std::coroutine_handle&lt;promise_type&gt; handle_;\n};\n\n\/\/ \u30b3\u30eb\u30fc\u30c1\u30f3\u3092\u4f7f\u7528\u3057\u305f\u975e\u540c\u671f\u51e6\u7406\nAsyncResult&lt;int&gt; async_process(std::function&lt;void(int)&gt; callback) {\n    int result = 42;\n    callback(result);\n    co_return result;\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-30\">\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u3092\u8003\u616e\u3057\u305f\u30b3\u30fc\u30c9\u8a2d\u8a08<\/h3>\n\n\n\n<p>\u5c06\u6765\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3092\u8003\u616e\u3057\u305fstd::bind\u306e\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;memory&gt;\n#include &lt;string&gt;\n#include &lt;vector&gt;\n\n\/\/ \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5c64\u3067\u306e\u62bd\u8c61\u5316\nclass IEventHandler {\npublic:\n    virtual ~IEventHandler() = default;\n    virtual void handle(const std::string&amp; event) = 0;\n};\n\n\/\/ \u5177\u4f53\u7684\u306a\u5b9f\u88c5\nclass ConcreteEventHandler : public IEventHandler {\npublic:\n    void handle(const std::string&amp; event) override {\n        std::cout &lt;&lt; \"Handling event: \" &lt;&lt; event &lt;&lt; std::endl;\n    }\n};\n\n\/\/ \u30d5\u30a1\u30af\u30c8\u30ea\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u305f\u30cf\u30f3\u30c9\u30e9\u30fc\u751f\u6210\nclass EventHandlerFactory {\npublic:\n    static std::function&lt;void(const std::string&amp;)&gt; createHandler() {\n        auto handler = std::make_shared&lt;ConcreteEventHandler&gt;();\n        return std::bind(&amp;IEventHandler::handle, handler, std::placeholders::_1);\n    }\n};\n\n\/\/ \u5c06\u6765\u306e\u62e1\u5f35\u3092\u8003\u616e\u3057\u305f\u30a4\u30d9\u30f3\u30c8\u30b7\u30b9\u30c6\u30e0\nclass ExtensibleEventSystem {\npublic:\n    using HandlerType = std::function&lt;void(const std::string&amp;)&gt;;\n\n    void addHandler(HandlerType handler) {\n        handlers_.push_back(std::move(handler));\n    }\n\n    template&lt;typename T&gt;\n    void addHandlerObject(T&amp; obj, void (T::*method)(const std::string&amp;)) {\n        handlers_.push_back(std::bind(method, &amp;obj, std::placeholders::_1));\n    }\n\n    void notify(const std::string&amp; event) {\n        for (const auto&amp; handler : handlers_) {\n            handler(event);\n        }\n    }\n\nprivate:\n    std::vector&lt;HandlerType&gt; handlers_;\n};\n\n\/\/ \u4f9d\u5b58\u6027\u6ce8\u5165\u3092\u8003\u616e\u3057\u305f\u8a2d\u8a08\nclass ModernComponent {\npublic:\n    explicit ModernComponent(std::function&lt;void(const std::string&amp;)&gt; logger)\n        : logger_(std::move(logger)) {}\n\n    void executeOperation(const std::string&amp; data) {\n        logger_(\"Executing operation with: \" + data);\n        \/\/ \u5b9f\u969b\u306e\u51e6\u7406\n    }\n\nprivate:\n    std::function&lt;void(const std::string&amp;)&gt; logger_;\n};\n\n\/\/ \u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\nnamespace BindUtils {\n    template&lt;typename T&gt;\n    auto makeWeakBind(std::weak_ptr&lt;T&gt; weak, auto method) {\n        return [weak, method](auto&amp;&amp;... args) {\n            if (auto strong = weak.lock()) {\n                ((*strong).*method)(std::forward&lt;decltype(args)&gt;(args)...);\n            }\n        };\n    }\n\n    template&lt;typename T&gt;\n    auto makeMonitoredBind(T* obj, auto method, auto onError) {\n        return [obj, method, onError](auto&amp;&amp;... args) {\n            try {\n                if (obj) {\n                    (obj-&gt;*method)(std::forward&lt;decltype(args)&gt;(args)...);\n                }\n            } catch (const std::exception&amp; e) {\n                onError(e.what());\n            }\n        };\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nint main() {\n    \/\/ \u30d5\u30a1\u30af\u30c8\u30ea\u3092\u4f7f\u7528\u3057\u305f\u30cf\u30f3\u30c9\u30e9\u30fc\u4f5c\u6210\n    auto handler = EventHandlerFactory::createHandler();\n\n    \/\/ \u62e1\u5f35\u53ef\u80fd\u306a\u30a4\u30d9\u30f3\u30c8\u30b7\u30b9\u30c6\u30e0\n    ExtensibleEventSystem eventSystem;\n    ConcreteEventHandler concreteHandler;\n\n    eventSystem.addHandlerObject(concreteHandler, &amp;ConcreteEventHandler::handle);\n\n    \/\/ \u4f9d\u5b58\u6027\u6ce8\u5165\u306e\u4f8b\n    auto logger = [](const std::string&amp; msg) { std::cout &lt;&lt; msg &lt;&lt; std::endl; };\n    ModernComponent component(logger);\n\n    \/\/ WeakPtr\u3092\u4f7f\u7528\u3057\u305f\u30d0\u30a4\u30f3\u30c9\n    auto ptr = std::make_shared&lt;ConcreteEventHandler&gt;();\n    auto weakBind = BindUtils::makeWeakBind(std::weak_ptr(ptr), \n                                          &amp;ConcreteEventHandler::handle);\n\n    \/\/ \u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u4ed8\u304d\u30d0\u30a4\u30f3\u30c9\n    auto monitoredBind = BindUtils::makeMonitoredBind(\n        &amp;concreteHandler,\n        &amp;ConcreteEventHandler::handle,\n        [](const std::string&amp; error) { \n            std::cerr &lt;&lt; \"Error: \" &lt;&lt; error &lt;&lt; std::endl; \n        }\n    );\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5c06\u6765\u7684\u306a\u8981\u4ef6\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u62e1\u5f35\u6027\u306e\u78ba\u4fdd<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30d9\u30fc\u30b9\u306e\u8a2d\u8a08<\/li>\n\n\n\n<li>\u4f9d\u5b58\u6027\u6ce8\u5165\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30e2\u30b8\u30e5\u30fc\u30eb\u6027\u306e\u5411\u4e0a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5b89\u5168\u6027\u306e\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>WeakPtr\u3092\u4f7f\u7528\u3057\u305f\u30e1\u30e2\u30ea\u7ba1\u7406<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u7d71\u5408<\/li>\n\n\n\n<li>\u578b\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5c06\u6765\u306e\u8a00\u8a9e\u6a5f\u80fd\u3068\u306e\u7d71\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30bb\u30d7\u30c8\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30b3\u30eb\u30fc\u30c1\u30f3\u3068\u306e\u9023\u643a<\/li>\n\n\n\n<li>\u30e2\u30b8\u30e5\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u5bfe\u5fdc<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4fdd\u5b88\u6027\u306e\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d5\u30a1\u30af\u30c8\u30ea\u30d1\u30bf\u30fc\u30f3\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u4f9d\u5b58\u95a2\u4fc2\u306e\u660e\u78ba\u5316<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u5bb9\u6613\u6027\u306e\u78ba\u4fdd<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5c06\u6765\u7684\u306a\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u3068\u62e1\u5f35\u6027\u3092\u78ba\u4fdd\u3057\u3064\u3064\u3001std::bind\u306e\u5229\u70b9\u3092\u6700\u5927\u9650\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-31\">std::bind\u306e\u4ee3\u66ff\u624b\u6bb5\u3068\u4f7f\u3044\u5206\u3051<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-32\">\u6a5f\u80fd\u5225\u306e\u6700\u9069\u306a\u5b9f\u88c5\u65b9\u6cd5\u306e\u9078\u629e\u57fa\u6e96<\/h3>\n\n\n\n<p>std::bind\u306e\u4ee3\u66ff\u624b\u6bb5\u306b\u3064\u3044\u3066\u3001\u6a5f\u80fd\u5225\u306b\u6700\u9069\u306a\u5b9f\u88c5\u65b9\u6cd5\u3092\u6bd4\u8f03\u691c\u8a0e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-33\">1. \u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u751f\u6210<\/h4>\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;functional&gt;\n#include &lt;iostream&gt;\n#include &lt;memory&gt;\n\n\/\/ \u6bd4\u8f03\u306e\u305f\u3081\u306e\u57fa\u672c\u95a2\u6570\nvoid print_data(int id, const std::string&amp; data) {\n    std::cout &lt;&lt; \"ID: \" &lt;&lt; id &lt;&lt; \", Data: \" &lt;&lt; data &lt;&lt; std::endl;\n}\n\nclass Processor {\npublic:\n    void process(int value) {\n        std::cout &lt;&lt; \"Processing: \" &lt;&lt; value &lt;&lt; std::endl;\n    }\n};\n\nint main() {\n    \/\/ 1. std::bind \u306b\u3088\u308b\u5b9f\u88c5\n    auto bind_print = std::bind(print_data, 1, std::placeholders::_1);\n\n    \/\/ 2. \u30e9\u30e0\u30c0\u5f0f\u306b\u3088\u308b\u5b9f\u88c5\n    auto lambda_print = [](const std::string&amp; data) {\n        print_data(1, data);\n    };\n\n    \/\/ 3. std::function + \u30e9\u30e0\u30c0\u306b\u3088\u308b\u5b9f\u88c5\n    std::function&lt;void(const std::string&amp;)&gt; func_print = \n        [](const std::string&amp; data) { print_data(1, data); };\n\n    \/\/ 4. \u30e1\u30f3\u30d0\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5\n    Processor proc;\n    auto member_func = &amp;Processor::process;\n\n    \/\/ \u4f7f\u7528\u4f8b\n    bind_print(\"test\");           \/\/ std::bind\n    lambda_print(\"test\");         \/\/ \u30e9\u30e0\u30c0\u5f0f\n    func_print(\"test\");          \/\/ std::function\n    (proc.*member_func)(42);     \/\/ \u30e1\u30f3\u30d0\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-34\">\u5b9f\u88c5\u65b9\u6cd5\u306e\u6bd4\u8f03\u8868<\/h4>\n\n\n<div id=\"id-e2dbc7ca-8376-4f06-9adc-890759f6aff1\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9f\u88c5\u65b9\u6cd5<\/th><th>\u53ef\u8aad\u6027<\/th><th>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/th><th>\u67d4\u8edf\u6027<\/th><th>\u30c7\u30d0\u30c3\u30b0\u5bb9\u6613\u6027<\/th><\/tr><\/thead><tbody><tr><td>std::bind<\/td><td>\u4e2d<\/td><td>\u4e2d<\/td><td>\u9ad8<\/td><td>\u4f4e<\/td><\/tr><tr><td>\u30e9\u30e0\u30c0\u5f0f<\/td><td>\u9ad8<\/td><td>\u9ad8<\/td><td>\u9ad8<\/td><td>\u9ad8<\/td><\/tr><tr><td>std::function<\/td><td>\u9ad8<\/td><td>\u4e2d<\/td><td>\u9ad8<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u30e1\u30f3\u30d0\u95a2\u6570\u30dd\u30a4\u30f3\u30bf<\/td><td>\u4f4e<\/td><td>\u9ad8<\/td><td>\u4f4e<\/td><td>\u4f4e<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-35\">\u5c06\u6765\u306e\u30b3\u30fc\u30c9\u79fb\u884c\u3092\u898b\u636e\u3048\u305f\u8a2d\u8a08\u5224\u65ad<\/h3>\n\n\n\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u306b\u5fdc\u3058\u305f\u6700\u9069\u306a\u5b9f\u88c5\u65b9\u6cd5\u306e\u9078\u629e\u3068\u3001\u5c06\u6765\u306e\u79fb\u884c\u3092\u8003\u616e\u3057\u305f\u8a2d\u8a08\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;functional&gt;\n#include &lt;memory&gt;\n#include &lt;vector&gt;\n\n\/\/ \u5c06\u6765\u306e\u62e1\u5f35\u6027\u3092\u8003\u616e\u3057\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u8a2d\u8a08\nclass IEventHandler {\npublic:\n    virtual ~IEventHandler() = default;\n    virtual void handle(const std::string&amp; event) = 0;\n};\n\n\/\/ \u79fb\u884c\u3057\u3084\u3059\u3044\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\nclass ModernImplementation {\npublic:\n    \/\/ 1. \u6bb5\u968e\u7684\u306a\u79fb\u884c\u3092\u53ef\u80fd\u306b\u3059\u308b\u8a2d\u8a08\n    template&lt;typename Func&gt;\n    void registerHandler(Func&amp;&amp; handler) {\n        if constexpr (std::is_bind_expression_v&lt;std::decay_t&lt;Func&gt;&gt;) {\n            \/\/ std::bind\u3092\u4f7f\u7528\u3057\u305f\u53e4\u3044\u5b9f\u88c5\n            handlers_bind_.push_back(std::forward&lt;Func&gt;(handler));\n        } else {\n            \/\/ \u65b0\u3057\u3044\u5b9f\u88c5\uff08\u30e9\u30e0\u30c0\u5f0f\u306a\u3069\uff09\n            handlers_modern_.push_back(std::forward&lt;Func&gt;(handler));\n        }\n    }\n\n    \/\/ 2. \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30d9\u30fc\u30b9\u306e\u5b9f\u88c5\n    void addHandler(std::shared_ptr&lt;IEventHandler&gt; handler) {\n        handlers_interface_.push_back(handler);\n    }\n\nprivate:\n    std::vector&lt;std::function&lt;void(const std::string&amp;)&gt;&gt; handlers_bind_;\n    std::vector&lt;std::function&lt;void(const std::string&amp;)&gt;&gt; handlers_modern_;\n    std::vector&lt;std::shared_ptr&lt;IEventHandler&gt;&gt; handlers_interface_;\n};\n\n\/\/ \u5b9f\u88c5\u306e\u9078\u629e\u3092\u5bb9\u6613\u306b\u3059\u308b\u30d5\u30a1\u30af\u30c8\u30ea\nclass HandlerFactory {\npublic:\n    \/\/ std::bind\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5\n    static auto createBindHandler(int id) {\n        return std::bind([](int id, const std::string&amp; msg) {\n            std::cout &lt;&lt; \"ID: \" &lt;&lt; id &lt;&lt; \", Message: \" &lt;&lt; msg &lt;&lt; std::endl;\n        }, id, std::placeholders::_1);\n    }\n\n    \/\/ \u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5\n    static auto createLambdaHandler(int id) {\n        return [id](const std::string&amp; msg) {\n            std::cout &lt;&lt; \"ID: \" &lt;&lt; id &lt;&lt; \", Message: \" &lt;&lt; msg &lt;&lt; std::endl;\n        };\n    }\n\n    \/\/ \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30d9\u30fc\u30b9\u306e\u5b9f\u88c5\n    static std::shared_ptr&lt;IEventHandler&gt; createInterfaceHandler(int id) {\n        class ConcreteHandler : public IEventHandler {\n        public:\n            ConcreteHandler(int id) : id_(id) {}\n            void handle(const std::string&amp; event) override {\n                std::cout &lt;&lt; \"ID: \" &lt;&lt; id_ &lt;&lt; \", Event: \" &lt;&lt; event &lt;&lt; std::endl;\n            }\n        private:\n            int id_;\n        };\n        return std::make_shared&lt;ConcreteHandler&gt;(id);\n    }\n};\n\n\/\/ \u5b9f\u88c5\u306e\u79fb\u884c\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\nnamespace MigrationGuidelines {\n    \/\/ 1. \u65b0\u898f\u30b3\u30fc\u30c9\u3067\u306e\u63a8\u5968\u5b9f\u88c5\n    template&lt;typename T&gt;\n    auto createModernHandler(T* obj, void (T::*method)(const std::string&amp;)) {\n        return [obj, method](const std::string&amp; event) {\n            (obj-&gt;*method)(event);\n        };\n    }\n\n    \/\/ 2. \u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u3068\u306e\u7d71\u5408\n    template&lt;typename T&gt;\n    auto createCompatibleHandler(T* obj, void (T::*method)(const std::string&amp;)) {\n        \/\/ \u5fc5\u8981\u306b\u5fdc\u3058\u3066std::bind\u3082\u4f7f\u7528\u53ef\u80fd\n        return std::bind(method, obj, std::placeholders::_1);\n    }\n\n    \/\/ 3. \u5c06\u6765\u306e\u62e1\u5f35\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\n    template&lt;typename T&gt;\n    class ExtensibleHandler {\n    public:\n        void addHandler(T handler) {\n            handlers_.push_back(std::move(handler));\n        }\n\n        template&lt;typename... Args&gt;\n        void notify(Args&amp;&amp;... args) {\n            for (auto&amp; handler : handlers_) {\n                handler(std::forward&lt;Args&gt;(args)...);\n            }\n        }\n\n    private:\n        std::vector&lt;T&gt; handlers_;\n    };\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nint main() {\n    ModernImplementation impl;\n\n    \/\/ \u7570\u306a\u308b\u5b9f\u88c5\u65b9\u6cd5\u306e\u4f75\u7528\n    impl.registerHandler(HandlerFactory::createBindHandler(1));\n    impl.registerHandler(HandlerFactory::createLambdaHandler(2));\n    impl.addHandler(HandlerFactory::createInterfaceHandler(3));\n\n    \/\/ \u79fb\u884c\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u4f7f\u7528\n    using namespace MigrationGuidelines;\n    auto modern_handler = createModernHandler(&amp;impl, &amp;ModernImplementation::registerHandler);\n    auto compatible_handler = createCompatibleHandler(&amp;impl, &amp;ModernImplementation::registerHandler);\n\n    \/\/ \u62e1\u5f35\u53ef\u80fd\u306a\u30cf\u30f3\u30c9\u30e9\u30fc\u306e\u4f7f\u7528\n    ExtensibleHandler&lt;std::function&lt;void(const std::string&amp;)&gt;&gt; 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