{"id":1987,"date":"2025-03-24T08:48:36","date_gmt":"2025-03-23T23:48:36","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1987"},"modified":"2025-03-24T08:48:59","modified_gmt":"2025-03-23T23:48:59","slug":"%e3%80%90%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%e3%80%91stdunordered_map%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%a8%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e%e3%83%b3%e3%82%b9%e6%9c%80","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1987","title":{"rendered":"\u3010\u5b8c\u5168\u30ac\u30a4\u30c9\u3011std::unordered_map\u306e\u4f7f\u3044\u65b9\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af10\u9078"},"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::unordered_map\u3068\u306f\u4f55\u304b\uff1f<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u30d9\u30fc\u30b9\u306e\u30b3\u30f3\u30c6\u30ca\u306e\u7279\u5fb4<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">std::map\u3068\u306e\u91cd\u8981\u306a\u9055\u3044<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u30de\u30b9\u30bf\u30fc\u30ac\u30a4\u30c9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u524a\u9664\u306e\u6b63\u3057\u3044\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-7\">\u52b9\u7387\u7684\u306a\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\u624b\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-8\">\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u3068\u7bc4\u56f2\u30d9\u30fc\u30b9for\u30eb\u30fc\u30d7\u306e\u6d3b\u7528<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-10\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u6975\u610f<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-11\">\u9069\u5207\u306a\u30d0\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-13\">\u30ab\u30b9\u30bf\u30e0\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316\u6226\u7565<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-16\">\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u89e3\u8aac<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-17\">\u983b\u51fa\u30d1\u30bf\u30fc\u30f3\u3068\u305d\u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-20\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u5834\u9762\u3067\u306e\u6d3b\u7528\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-22\">\u4e00\u822c\u7684\u306a\u30d4\u30c3\u30c8\u30d5\u30a9\u30fc\u30eb\u3068\u5bfe\u7b56<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-23\">\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-26\">\u4e26\u884c\u51e6\u7406\u3067\u306e\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-30\">std::unordered_map\u306eC++23\u6700\u65b0\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-31\">\u65b0\u6a5f\u80fd\u3068\u6539\u5584\u70b9\u306e\u8a73\u7d30<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-36\">\u5c06\u6765\u306e\u958b\u767a\u306b\u5411\u3051\u305f\u5c55\u671b<\/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::unordered_map\u3068\u306f\u4f55\u304b\uff1f<\/h2>\n\n\n\n<p>std::unordered_map\u306f\u3001C++\u306e\u6a19\u6e96\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\uff08STL\uff09\u306b\u542b\u307e\u308c\u308b\u9023\u60f3\u30b3\u30f3\u30c6\u30ca\u306e1\u3064\u3067\u3059\u3002\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u683c\u7d0d\u3059\u308b\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u30d9\u30fc\u30b9\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3001\u9ad8\u901f\u306a\u8981\u7d20\u691c\u7d22\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u30d9\u30fc\u30b9\u306e\u30b3\u30f3\u30c6\u30ca\u306e\u7279\u5fb4<\/h3>\n\n\n\n<p>std::unordered_map\u306e\u6838\u3068\u306a\u308b\u7279\u5fb4\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306b\u3088\u308b\u9ad8\u901f\u30a2\u30af\u30bb\u30b9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5e73\u5747\u7684\u306a\u8981\u7d20\u30a2\u30af\u30bb\u30b9\u6642\u9593\u304c O(1)<\/li>\n\n\n\n<li>\u30ad\u30fc\u304c\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306b\u3088\u3063\u3066\u5185\u90e8\u7684\u306a\u30d0\u30b1\u30c3\u30c8\u306b\u30de\u30c3\u30d4\u30f3\u30b0<\/li>\n\n\n\n<li>\u885d\u7a81\u89e3\u6c7a\u306b\u306f\u30c1\u30a7\u30a4\u30f3\u6cd5\u3092\u4f7f\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u52b9\u7387\u3068\u6027\u80fd\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d0\u30b1\u30c3\u30c8\u6570\u3068\u30ed\u30fc\u30c9\u30d5\u30a1\u30af\u30bf\u30fc\u306b\u3088\u3063\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5909\u5316<\/li>\n\n\n\n<li>\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u6700\u5927\u30ed\u30fc\u30c9\u30d5\u30a1\u30af\u30bf\u30fc\u306f1.0<\/li>\n\n\n\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u81ea\u52d5\u7684\u306b\u30ea\u30cf\u30c3\u30b7\u30e5\u3092\u5b9f\u884c<\/li>\n<\/ul>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;unordered_map&gt;\n#include &lt;string&gt;\n\nint main() {\n    \/\/ string\u578b\u306e\u30ad\u30fc\u3068int\u578b\u306e\u5024\u3092\u6301\u3064unordered_map\u3092\u4f5c\u6210\n    std::unordered_map&lt;std::string, int&gt; word_count;\n\n    \/\/ \u8981\u7d20\u306e\u633f\u5165\n    word_count[\"apple\"] = 1;      \/\/ \u65b0\u898f\u8ffd\u52a0\n    word_count[\"banana\"] = 2;     \/\/ \u65b0\u898f\u8ffd\u52a0\n    word_count[\"apple\"]++;        \/\/ \u65e2\u5b58\u5024\u306e\u66f4\u65b0\n\n    \/\/ \u73fe\u5728\u306e\u30d0\u30b1\u30c3\u30c8\u60c5\u5831\u3092\u78ba\u8a8d\n    std::cout &lt;&lt; \"\u30d0\u30b1\u30c3\u30c8\u6570: \" &lt;&lt; word_count.bucket_count() &lt;&lt; \"\\n\";\n    std::cout &lt;&lt; \"\u30ed\u30fc\u30c9\u30d5\u30a1\u30af\u30bf\u30fc: \" &lt;&lt; word_count.load_factor() &lt;&lt; \"\\n\";\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">std::map\u3068\u306e\u91cd\u8981\u306a\u9055\u3044<\/h3>\n\n\n\n<p>std::unordered_map\u3068std::map\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u91cd\u8981\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n<div id=\"id-915d3964-a2a1-47d1-877d-04824943148c\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7279\u5fb4<\/th><th>std::unordered_map<\/th><th>std::map<\/th><\/tr><\/thead><tbody><tr><td>\u5185\u90e8\u5b9f\u88c5<\/td><td>\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb<\/td><td>\u8d64\u9ed2\u6728<\/td><\/tr><tr><td>\u8981\u7d20\u306e\u9806\u5e8f<\/td><td>\u672a\u5b9a\u7fa9<\/td><td>\u30ad\u30fc\u3067\u81ea\u52d5\u7684\u306b\u30bd\u30fc\u30c8<\/td><\/tr><tr><td>\u691c\u7d22\u6642\u9593<\/td><td>\u5e73\u5747 O(1)<\/td><td>O(log n)<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/td><td>\u3088\u308a\u591a\u3044<\/td><td>\u3088\u308a\u5c11\u306a\u3044<\/td><\/tr><tr><td>\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u901f\u5ea6<\/td><td>\u3088\u308a\u9045\u3044<\/td><td>\u3088\u308a\u901f\u3044<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u4ee5\u4e0b\u306f\u3001\u4e21\u8005\u306e\u6027\u80fd\u7279\u6027\u3092\u793a\u3059\u7c21\u5358\u306a\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u4f8b\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;chrono&gt;\n#include &lt;map&gt;\n#include &lt;unordered_map&gt;\n\nvoid performance_comparison() {\n    const int NUM_ELEMENTS = 1000000;\n\n    \/\/ unordered_map\u3068map\u306e\u6e96\u5099\n    std::unordered_map&lt;int, int&gt; umap;\n    std::map&lt;int, int&gt; map;\n\n    \/\/ \u633f\u5165\u6642\u9593\u306e\u8a08\u6e2c\n    auto start = std::chrono::high_resolution_clock::now();\n    for (int i = 0; i &lt; NUM_ELEMENTS; i++) {\n        umap[i] = i;\n    }\n    auto end = std::chrono::high_resolution_clock::now();\n    auto umap_insert_time = std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;(end - start).count();\n\n    start = std::chrono::high_resolution_clock::now();\n    for (int i = 0; i &lt; NUM_ELEMENTS; i++) {\n        map[i] = i;\n    }\n    end = std::chrono::high_resolution_clock::now();\n    auto map_insert_time = std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;(end - start).count();\n\n    \/\/ \u7d50\u679c\u51fa\u529b\n    std::cout &lt;&lt; \"unordered_map \u633f\u5165\u6642\u9593: \" &lt;&lt; umap_insert_time &lt;&lt; \"ms\\n\";\n    std::cout &lt;&lt; \"map \u633f\u5165\u6642\u9593: \" &lt;&lt; map_insert_time &lt;&lt; \"ms\\n\";\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u6027\u80fd\u7279\u6027\u306e\u9055\u3044\u304b\u3089\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u5408\u306bstd::unordered_map\u306e\u4f7f\u7528\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8981\u7d20\u306e\u9806\u5e8f\u304c\u91cd\u8981\u3067\u306a\u3044\u5834\u5408<\/li>\n\n\n\n<li>\u9ad8\u901f\u306a\u691c\u7d22\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3088\u308a\u3082\u691c\u7d22\u901f\u5ea6\u3092\u512a\u5148\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u30ad\u30fc\u306e\u6bd4\u8f03\u304c\u8a08\u7b97\u30b3\u30b9\u30c8\u304c\u9ad8\u3044\u5834\u5408<\/li>\n<\/ol>\n\n\n\n<p>\u4e00\u65b9\u3001\u4ee5\u4e0b\u306e\u5834\u5408\u306fstd::map\u306e\u4f7f\u7528\u3092\u691c\u8a0e\u3059\u3079\u304d\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30ad\u30fc\u306b\u3088\u308b\u30bd\u30fc\u30c8\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u52b9\u7387\u304c\u91cd\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\u304c\u983b\u7e41\u306b\u884c\u308f\u308c\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u8981\u7d20\u6570\u304c\u5c11\u306a\u3044\u5834\u5408\uff08100\u500b\u672a\u6e80\uff09<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u7279\u5fb4\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u30de\u30b9\u30bf\u30fc\u30ac\u30a4\u30c9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u524a\u9664\u306e\u6b63\u3057\u3044\u65b9\u6cd5<\/h3>\n\n\n\n<p>std::unordered_map\u306b\u306f\u3001\u8981\u7d20\u3092\u64cd\u4f5c\u3059\u308b\u305f\u3081\u306e\u8907\u6570\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-5\">1. \u8981\u7d20\u306e\u8ffd\u52a0<\/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;unordered_map&gt;\n#include &lt;string&gt;\n\nint main() {\n    std::unordered_map&lt;std::string, int&gt; scores;\n\n    \/\/ \u65b9\u6cd51: operator[] \u306b\u3088\u308b\u8ffd\u52a0\n    scores[\"Alice\"] = 100;    \/\/ \u65b0\u898f\u8ffd\u52a0\n    scores[\"Bob\"] = 95;       \/\/ \u65b0\u898f\u8ffd\u52a0\n    scores[\"Alice\"] = 98;     \/\/ \u65e2\u5b58\u5024\u306e\u66f4\u65b0\n\n    \/\/ \u65b9\u6cd52: insert\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308b\u8ffd\u52a0\n    scores.insert({\"Charlie\", 92});          \/\/ \u5358\u4e00\u8981\u7d20\u306e\u8ffd\u52a0\n    scores.insert({{\"David\", 88},            \/\/ \u8907\u6570\u8981\u7d20\u306e\u8ffd\u52a0\n                  {\"Eve\", 91}});\n\n    \/\/ \u65b9\u6cd53: emplace \u306b\u3088\u308b\u8ffd\u52a0\uff08\u6700\u3082\u52b9\u7387\u7684\uff09\n    scores.emplace(\"Frank\", 87);             \/\/ \u305d\u306e\u5834\u3067\u69cb\u7bc9\n\n    \/\/ \u65b9\u6cd54: try_emplace\uff08C++17\u4ee5\u964d\u63a8\u5968\uff09\n    scores.try_emplace(\"George\", 94);        \/\/ \u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u307f\u8ffd\u52a0\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-6\">2. \u8981\u7d20\u306e\u524a\u9664<\/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=\"\">void demonstration_delete() {\n    std::unordered_map&lt;int, std::string&gt; users;\n\n    \/\/ \u30b5\u30f3\u30d7\u30eb\u30c7\u30fc\u30bf\u306e\u8ffd\u52a0\n    users[1] = \"User1\";\n    users[2] = \"User2\";\n    users[3] = \"User3\";\n\n    \/\/ \u65b9\u6cd51: erase\u306b\u3088\u308b\u30ad\u30fc\u3092\u6307\u5b9a\u3057\u305f\u524a\u9664\n    users.erase(1);                          \/\/ \u30ad\u30fc1\u306e\u8981\u7d20\u3092\u524a\u9664\n\n    \/\/ \u65b9\u6cd52: \u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u524a\u9664\n    auto it = users.find(2);\n    if (it != users.end()) {\n        users.erase(it);                     \/\/ \u30a4\u30c6\u30ec\u30fc\u30bf\u4f4d\u7f6e\u306e\u8981\u7d20\u3092\u524a\u9664\n    }\n\n    \/\/ \u65b9\u6cd53: \u6761\u4ef6\u306b\u57fa\u3065\u304f\u524a\u9664\uff08C++20\u4ee5\u964d\uff09\n    std::erase_if(users, [](const auto&amp; pair) {\n        return pair.second.starts_with(\"User\");  \/\/ \"User\"\u3067\u59cb\u307e\u308b\u5024\u3092\u6301\u3064\u8981\u7d20\u3092\u524a\u9664\n    });\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u52b9\u7387\u7684\u306a\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\u624b\u6cd5<\/h3>\n\n\n\n<p>\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306f\u3001\u7528\u9014\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\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=\"\">void access_methods() {\n    std::unordered_map&lt;std::string, int&gt; data{{\"key1\", 1}, {\"key2\", 2}};\n\n    \/\/ \u65b9\u6cd51: operator[] - \u8981\u7d20\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u69cb\u7bc9\u3057\u3066\u8ffd\u52a0\n    int value1 = data[\"key1\"];               \/\/ \u5b58\u5728\u3059\u308b\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\n    int value3 = data[\"key3\"];               \/\/ \u8b66\u544a: \u65b0\u3057\u3044\u8981\u7d20\u304c\u8ffd\u52a0\u3055\u308c\u308b\n\n    \/\/ \u65b9\u6cd52: at() - \u8981\u7d20\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u4f8b\u5916\u3092\u30b9\u30ed\u30fc\n    try {\n        int value2 = data.at(\"key2\");        \/\/ \u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\n        int value4 = data.at(\"key4\");        \/\/ std::out_of_range\u4f8b\u5916\n    } catch (const std::out_of_range&amp; e) {\n        std::cerr &lt;&lt; \"\u8981\u7d20\u304c\u5b58\u5728\u3057\u307e\u305b\u3093: \" &lt;&lt; e.what() &lt;&lt; '\\n';\n    }\n\n    \/\/ \u65b9\u6cd53: find() - \u8981\u7d20\u306e\u5b58\u5728\u78ba\u8a8d\u304c\u5fc5\u8981\u306a\u5834\u5408\n    if (auto it = data.find(\"key1\"); it != data.end()) {\n        int value = it-&gt;second;              \/\/ \u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\n    }\n\n    \/\/ \u65b9\u6cd54: contains() (C++20\u4ee5\u964d) - \u8981\u7d20\u306e\u5b58\u5728\u78ba\u8a8d\u306e\u307f\n    if (data.contains(\"key2\")) {\n        int value = data[\"key2\"];            \/\/ \u5b58\u5728\u78ba\u8a8d\u5f8c\u306e\u30a2\u30af\u30bb\u30b9\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u3068\u7bc4\u56f2\u30d9\u30fc\u30b9for\u30eb\u30fc\u30d7\u306e\u6d3b\u7528<\/h3>\n\n\n\n<p>unordered_map\u306e\u8981\u7d20\u3092\u8d70\u67fb\u3059\u308b\u969b\u306f\u3001\u8907\u6570\u306e\u65b9\u6cd5\u304c\u5229\u7528\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=\"\">void iteration_examples() {\n    std::unordered_map&lt;std::string, int&gt; scores{\n        {\"Alice\", 100}, {\"Bob\", 95}, {\"Charlie\", 92}\n    };\n\n    \/\/ \u65b9\u6cd51: \u7bc4\u56f2\u30d9\u30fc\u30b9for\u30eb\u30fc\u30d7\uff08\u6700\u3082\u8aad\u307f\u3084\u3059\u3044\uff09\n    for (const auto&amp; [name, score] : scores) {\n        std::cout &lt;&lt; name &lt;&lt; \": \" &lt;&lt; score &lt;&lt; '\\n';\n    }\n\n    \/\/ \u65b9\u6cd52: \u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u660e\u793a\u7684\u306a\u30eb\u30fc\u30d7\n    for (auto it = scores.begin(); it != scores.end(); ++it) {\n        std::cout &lt;&lt; it-&gt;first &lt;&lt; \": \" &lt;&lt; it-&gt;second &lt;&lt; '\\n';\n    }\n\n    \/\/ \u65b9\u6cd53: \u30d0\u30b1\u30c3\u30c8\u5358\u4f4d\u3067\u306e\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\n    for (size_t i = 0; i &lt; scores.bucket_count(); ++i) {\n        std::cout &lt;&lt; \"\u30d0\u30b1\u30c3\u30c8 \" &lt;&lt; i &lt;&lt; \" \u306e\u30b5\u30a4\u30ba: \" \n                  &lt;&lt; scores.bucket_size(i) &lt;&lt; '\\n';\n        for (auto it = scores.begin(i); it != scores.end(i); ++it) {\n            std::cout &lt;&lt; \"  \" &lt;&lt; it-&gt;first &lt;&lt; \": \" &lt;&lt; it-&gt;second &lt;&lt; '\\n';\n        }\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-9\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u95a2\u3059\u308b\u91cd\u8981\u306a\u6ce8\u610f\u70b9\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8981\u7d20\u306e\u8ffd\u52a0<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>emplace<\/code>\u3084<code>try_emplace<\/code>\u306f\u3001\u53ef\u80fd\u306a\u5834\u5408\u306b\u306f\u5e38\u306b\u4f7f\u7528\u3059\u3079\u304d<\/li>\n\n\n\n<li>\u5927\u91cf\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u306f\u3001\u4e8b\u524d\u306breserve\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u30ea\u30cf\u30c3\u30b7\u30e5\u3092\u6e1b\u3089\u305b\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8aad\u307f\u53d6\u308a\u5c02\u7528\u306e\u5834\u5408\u306f<code>at()<\/code>\u307e\u305f\u306f<code>find()<\/code>\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u8981\u7d20\u306e\u5b58\u5728\u78ba\u8a8d\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f<code>contains()<\/code>\uff08C++20\u4ee5\u964d\uff09\u304c\u6700\u9069<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7bc4\u56f2\u30d9\u30fc\u30b9for\u30eb\u30fc\u30d7\u304c\u6700\u3082\u8aad\u307f\u3084\u3059\u304f\u4fdd\u5b88\u6027\u304c\u9ad8\u3044<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u5834\u5408\u306f\u3001\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u660e\u793a\u7684\u306a\u30eb\u30fc\u30d7\u3092\u691c\u8a0e<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u64cd\u4f5c\u3092\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-10\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u6975\u610f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u9069\u5207\u306a\u30d0\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/h3>\n\n\n\n<p>unordered_map\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306f\u3001\u30d0\u30b1\u30c3\u30c8\u306e\u8a2d\u5b9a\u306b\u5927\u304d\u304f\u4f9d\u5b58\u3057\u307e\u3059\u3002\u9069\u5207\u306a\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u691c\u7d22\u6027\u80fd\u3092\u6700\u5927\u5316\u3067\u304d\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;unordered_map&gt;\n#include &lt;chrono&gt;\n#include &lt;iostream&gt;\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c\u7528\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\nclass Timer {\n    std::chrono::high_resolution_clock::time_point start;\npublic:\n    Timer() : start(std::chrono::high_resolution_clock::now()) {}\n    double elapsed() {\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\nvoid bucket_optimization_demo() {\n    const int NUM_ELEMENTS = 1000000;\n\n    \/\/ \u6700\u9069\u5316\u306a\u3057\u306e\u30b1\u30fc\u30b9\n    {\n        Timer t;\n        std::unordered_map&lt;int, int&gt; map1;\n        for (int i = 0; i &lt; NUM_ELEMENTS; i++) {\n            map1[i] = i;\n        }\n        std::cout &lt;&lt; \"\u6700\u9069\u5316\u306a\u3057: \" &lt;&lt; t.elapsed() &lt;&lt; \"ms\\n\";\n        std::cout &lt;&lt; \"\u30d0\u30b1\u30c3\u30c8\u6570: \" &lt;&lt; map1.bucket_count() &lt;&lt; \"\\n\";\n        std::cout &lt;&lt; \"\u5e73\u5747\u30d0\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba: \" &lt;&lt; map1.size() \/ (float)map1.bucket_count() &lt;&lt; \"\\n\";\n    }\n\n    \/\/ \u30d0\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u3092\u6700\u9069\u5316\u3057\u305f\u30b1\u30fc\u30b9\n    {\n        Timer t;\n        std::unordered_map&lt;int, int&gt; map2;\n        map2.reserve(NUM_ELEMENTS);  \/\/ \u4e8b\u524d\u306b\u5fc5\u8981\u306a\u30d0\u30b1\u30c3\u30c8\u6570\u3092\u78ba\u4fdd\n        for (int i = 0; i &lt; NUM_ELEMENTS; i++) {\n            map2[i] = i;\n        }\n        std::cout &lt;&lt; \"\u6700\u9069\u5316\u3042\u308a: \" &lt;&lt; t.elapsed() &lt;&lt; \"ms\\n\";\n        std::cout &lt;&lt; \"\u30d0\u30b1\u30c3\u30c8\u6570: \" &lt;&lt; map2.bucket_count() &lt;&lt; \"\\n\";\n        std::cout &lt;&lt; \"\u5e73\u5747\u30d0\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba: \" &lt;&lt; map2.size() \/ (float)map2.bucket_count() &lt;&lt; \"\\n\";\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-12\">\u30d0\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u6700\u9069\u5316\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u521d\u671f\u30d0\u30b1\u30c3\u30c8\u6570\u306e\u8a2d\u5b9a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8981\u7d20\u6570\u304c\u4e88\u6e2c\u3067\u304d\u308b\u5834\u5408\u306f<code>reserve()<\/code>\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u76ee\u6a19\u306e\u6700\u5927\u8ca0\u8377\u4fc2\u6570\u306f0.7\u524d\u5f8c\u3092\u63a8\u5968<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ \u4e88\u60f3\u3055\u308c\u308b\u8981\u7d20\u6570\u306e1.5\u500d\u7a0b\u5ea6\u306e\u30d0\u30b1\u30c3\u30c8\u6570\u3092\u78ba\u4fdd\n   map.reserve(expected_size * 1.5);<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30ea\u30cf\u30c3\u30b7\u30e5\u306e\u5236\u5fa1<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>max_load_factor\u3092\u9069\u5207\u306b\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u624b\u52d5\u3067\u30ea\u30cf\u30c3\u30b7\u30e5\u3092\u5b9f\u884c<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   map.max_load_factor(0.7f);  \/\/ \u8ca0\u8377\u4fc2\u6570\u306e\u4e0a\u9650\u3092\u8a2d\u5b9a\n   map.rehash(needed_buckets); \/\/ \u5fc5\u8981\u306b\u5fdc\u3058\u3066\u624b\u52d5\u30ea\u30cf\u30c3\u30b7\u30e5<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30ab\u30b9\u30bf\u30e0\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u52b9\u7387\u7684\u306a\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u5b9f\u88c5\u306f\u3001unordered_map\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u304d\u304f\u5de6\u53f3\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\n\/\/ \u30ab\u30b9\u30bf\u30e0\u69cb\u9020\u4f53\u306e\u4f8b\nstruct Point {\n    int x, y;\n    bool operator==(const Point&amp; other) const {\n        return x == other.x &amp;&amp; y == other.y;\n    }\n};\n\n\/\/ \u30ab\u30b9\u30bf\u30e0\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u5b9f\u88c5\nnamespace std {\n    template&lt;&gt;\n    struct hash&lt;Point&gt; {\n        size_t operator()(const Point&amp; p) const {\n            \/\/ \u52b9\u7387\u7684\u306a\u30cf\u30c3\u30b7\u30e5\u8a08\u7b97\n            size_t h1 = std::hash&lt;int&gt;{}(p.x);\n            size_t h2 = std::hash&lt;int&gt;{}(p.y);\n            return h1 ^ (h2 &lt;&lt; 1);  \/\/ \u30b7\u30d5\u30c8\u6f14\u7b97\u3092\u4f7f\u7528\u3057\u3066\u5206\u5e03\u3092\u6539\u5584\n        }\n    };\n}\n\n\/\/ \u4f7f\u7528\u4f8b\u3068\u6027\u80fd\u6e2c\u5b9a\nvoid custom_hash_demo() {\n    std::unordered_map&lt;Point, std::string&gt; point_map;\n\n    \/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c6\u30b9\u30c8\u7528\u306e\u30c7\u30fc\u30bf\u6295\u5165\n    for (int i = 0; i &lt; 1000; i++) {\n        point_map[Point{i % 100, i \/ 100}] = \"Point \" + std::to_string(i);\n    }\n\n    \/\/ \u885d\u7a81\u7387\u306e\u78ba\u8a8d\n    size_t total_buckets = point_map.bucket_count();\n    size_t empty_buckets = 0;\n    size_t max_bucket_size = 0;\n\n    for (size_t i = 0; i &lt; total_buckets; i++) {\n        size_t bucket_size = point_map.bucket_size(i);\n        if (bucket_size == 0) empty_buckets++;\n        max_bucket_size = std::max(max_bucket_size, bucket_size);\n    }\n\n    std::cout &lt;&lt; \"\u7dcf\u30d0\u30b1\u30c3\u30c8\u6570: \" &lt;&lt; total_buckets &lt;&lt; \"\\n\";\n    std::cout &lt;&lt; \"\u7a7a\u30d0\u30b1\u30c3\u30c8\u6570: \" &lt;&lt; empty_buckets &lt;&lt; \"\\n\";\n    std::cout &lt;&lt; \"\u6700\u5927\u30d0\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba: \" &lt;&lt; max_bucket_size &lt;&lt; \"\\n\";\n    std::cout &lt;&lt; \"\u5e73\u5747\u30c1\u30a7\u30a4\u30f3\u9577: \" &lt;&lt; point_map.size() \/ (float)(total_buckets - empty_buckets) &lt;&lt; \"\\n\";\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316\u6226\u7565<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u52b9\u7387\u3092\u6700\u5927\u5316\u3059\u308b\u305f\u3081\u306e\u4e3b\u8981\u306a\u6226\u7565\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=\"\">\/\/ \u30e1\u30e2\u30ea\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u306e\u30c7\u30e2\nvoid memory_optimization_demo() {\n    \/\/ 1. \u9069\u5207\u306a\u521d\u671f\u5bb9\u91cf\u8a2d\u5b9a\n    std::unordered_map&lt;std::string, int&gt; optimized_map;\n    optimized_map.reserve(1000);  \/\/ \u4e88\u60f3\u3055\u308c\u308b\u8981\u7d20\u6570\u3092\u6307\u5b9a\n\n    \/\/ 2. \u30b7\u30e5\u30ea\u30f3\u30af\u6a5f\u80fd\u306e\u6d3b\u7528\n    {\n        std::unordered_map&lt;int, int&gt; temp_map;\n        temp_map.reserve(10000);\n        \/\/ \u30c7\u30fc\u30bf\u8ffd\u52a0\u5f8c\u3001\u4f59\u5206\u306a\u30e1\u30e2\u30ea\u3092\u89e3\u653e\n        for (int i = 0; i &lt; 5000; i++) {\n            temp_map[i] = i;\n        }\n        temp_map.max_load_factor(1.0);  \/\/ \u8ca0\u8377\u4fc2\u6570\u3092\u4e0a\u3052\u3066\u30e1\u30e2\u30ea\u4f7f\u7528\u3092\u6291\u5236\n        temp_map.rehash(0);             \/\/ \u6700\u5c0f\u5fc5\u8981\u30d0\u30b1\u30c3\u30c8\u6570\u306b\u7e2e\u5c0f\n    }\n\n    \/\/ 3. \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u4f7f\u7528\u4f8b\n    using CustomAllocator = std::allocator&lt;std::pair&lt;const int, int&gt;&gt;;\n    std::unordered_map&lt;int, int, std::hash&lt;int&gt;, std::equal_to&lt;int&gt;, CustomAllocator&gt; \n        custom_alloc_map;\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-15\">\u30e1\u30e2\u30ea\u6700\u9069\u5316\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5bb9\u91cf\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9069\u5207\u306a\u521d\u671f\u5bb9\u91cf\u306e\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u4e0d\u8981\u306a\u30e1\u30e2\u30ea\u306e\u89e3\u653e<\/li>\n\n\n\n<li>\u30d0\u30b1\u30c3\u30c8\u6570\u306e\u6700\u9069\u5316<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ad\u30fc\u3068\u5024\u306e\u30b5\u30a4\u30ba\u3092\u6700\u5c0f\u9650\u306b<\/li>\n\n\n\n<li>\u53ef\u80fd\u306a\u5834\u5408\u306f\u56fa\u5b9a\u9577\u30c7\u30fc\u30bf\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u30b9\u30e2\u30fc\u30eb\u30b9\u30c8\u30ea\u30f3\u30b0\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u306e\u6d3b\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u6226\u7565<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u4f7f\u7528\u691c\u8a0e<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u6700\u9069\u5316<\/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\u3001unordered_map\u306e\u6027\u80fd\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u904e\u5ea6\u306a\u6700\u9069\u5316\u306f\u53ef\u8aad\u6027\u3084\u4fdd\u5b88\u6027\u3092\u640d\u306a\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-16\">\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u89e3\u8aac<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u983b\u51fa\u30d1\u30bf\u30fc\u30f3\u3068\u305d\u306e\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-18\">1. \u30ad\u30e3\u30c3\u30b7\u30e5\u30b7\u30b9\u30c6\u30e0\u306e\u5b9f\u88c5<\/h4>\n\n\n\n<p>\u9ad8\u901f\u306a\u30ad\u30e3\u30c3\u30b7\u30e5\u30b7\u30b9\u30c6\u30e0\u306funordered_map\u306e\u4ee3\u8868\u7684\u306a\u6d3b\u7528\u4f8b\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;unordered_map&gt;\n#include &lt;chrono&gt;\n#include &lt;optional&gt;\n\ntemplate&lt;typename K, typename V&gt;\nclass Cache {\n    struct CacheEntry {\n        V value;\n        std::chrono::steady_clock::time_point expiry;\n    };\n\n    std::unordered_map&lt;K, CacheEntry&gt; cache;\n    std::chrono::seconds ttl;\n\npublic:\n    explicit Cache(std::chrono::seconds ttl_duration) : ttl(ttl_duration) {}\n\n    void put(const K&amp; key, const V&amp; value) {\n        auto expiry = std::chrono::steady_clock::now() + ttl;\n        cache[key] = CacheEntry{value, expiry};\n    }\n\n    std::optional&lt;V&gt; get(const K&amp; key) {\n        auto it = cache.find(key);\n        if (it == cache.end()) {\n            return std::nullopt;\n        }\n\n        if (std::chrono::steady_clock::now() &gt; it-&gt;second.expiry) {\n            cache.erase(it);\n            return std::nullopt;\n        }\n\n        return it-&gt;second.value;\n    }\n\n    void cleanup() {\n        auto now = std::chrono::steady_clock::now();\n        for (auto it = cache.begin(); it != cache.end();) {\n            if (now &gt; it-&gt;second.expiry) {\n                it = cache.erase(it);\n            } else {\n                ++it;\n            }\n        }\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid cache_example() {\n    Cache&lt;std::string, int&gt; number_cache(std::chrono::seconds(60));\n\n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\n    number_cache.put(\"one\", 1);\n    number_cache.put(\"two\", 2);\n\n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n    if (auto value = number_cache.get(\"one\")) {\n        std::cout &lt;&lt; \"Found: \" &lt;&lt; *value &lt;&lt; \"\\n\";\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-19\">2. \u983b\u5ea6\u30ab\u30a6\u30f3\u30bf\u306e\u5b9f\u88c5<\/h4>\n\n\n\n<p>\u6587\u5b57\u5217\u3084\u8981\u7d20\u306e\u51fa\u73fe\u983b\u5ea6\u3092\u6570\u3048\u308b\u3088\u3046\u306a\u51e6\u7406\u306f\u3001unordered_map\u306e\u5f97\u610f\u5206\u91ce\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;unordered_map&gt;\n#include &lt;string&gt;\n#include &lt;vector&gt;\n#include &lt;algorithm&gt;\n\nclass FrequencyCounter {\n    std::unordered_map&lt;std::string, size_t&gt; frequencies;\n\npublic:\n    void add(const std::string&amp; word) {\n        ++frequencies[word];\n    }\n\n    size_t get_frequency(const std::string&amp; word) const {\n        auto it = frequencies.find(word);\n        return it != frequencies.end() ? it-&gt;second : 0;\n    }\n\n    std::vector&lt;std::pair&lt;std::string, size_t&gt;&gt; get_top_n(size_t n) const {\n        std::vector&lt;std::pair&lt;std::string, size_t&gt;&gt; items(\n            frequencies.begin(), frequencies.end()\n        );\n\n        std::partial_sort(\n            items.begin(),\n            items.begin() + std::min(n, items.size()),\n            items.end(),\n            [](const auto&amp; a, const auto&amp; b) {\n                return a.second &gt; b.second;\n            }\n        );\n\n        items.resize(std::min(n, items.size()));\n        return items;\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid frequency_counter_example() {\n    FrequencyCounter counter;\n    std::vector&lt;std::string&gt; words = {\n        \"apple\", \"banana\", \"apple\", \"cherry\", \"date\", \"apple\", \"banana\"\n    };\n\n    for (const auto&amp; word : words) {\n        counter.add(word);\n    }\n\n    \/\/ \u4e0a\u4f4d3\u4ef6\u3092\u53d6\u5f97\n    auto top3 = counter.get_top_n(3);\n    for (const auto&amp; [word, count] : top3) {\n        std::cout &lt;&lt; word &lt;&lt; \": \" &lt;&lt; count &lt;&lt; \"\\n\";\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u5834\u9762\u3067\u306e\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-21\">1. \u9ad8\u901f\u306a\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u30c6\u30fc\u30d6\u30eb<\/h4>\n\n\n\n<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u306b\u5bfe\u3059\u308b\u9ad8\u901f\u306a\u691c\u7d22\u304c\u5fc5\u8981\u306a\u5834\u5408\u306e\u5b9f\u88c5\u4f8b\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;unordered_map&gt;\n#include &lt;string&gt;\n#include &lt;vector&gt;\n\nclass FastLookupTable {\n    \/\/ \u30ad\u30fc\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u30cf\u30c3\u30b7\u30e5\u5316\u3059\u308b\u305f\u3081\u306e\u69cb\u9020\u4f53\n    struct KeyPair {\n        std::string category;\n        int id;\n\n        bool operator==(const KeyPair&amp; other) const {\n            return category == other.category &amp;&amp; id == other.id;\n        }\n    };\n\n    \/\/ \u30ab\u30b9\u30bf\u30e0\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\n    struct KeyPairHash {\n        size_t operator()(const KeyPair&amp; k) const {\n            return std::hash&lt;std::string&gt;{}(k.category) ^\n                   (std::hash&lt;int&gt;{}(k.id) &lt;&lt; 1);\n        }\n    };\n\n    std::unordered_map&lt;KeyPair, std::string, KeyPairHash&gt; lookup_table;\n\npublic:\n    void insert(const std::string&amp; category, int id, const std::string&amp; value) {\n        lookup_table[KeyPair{category, id}] = value;\n    }\n\n    std::string find(const std::string&amp; category, int id) const {\n        auto it = lookup_table.find(KeyPair{category, id});\n        return it != lookup_table.end() ? it-&gt;second : \"\";\n    }\n\n    \/\/ \u30d0\u30eb\u30af\u64cd\u4f5c\u306e\u6700\u9069\u5316\n    void bulk_insert(const std::vector&lt;std::tuple&lt;std::string, int, std::string&gt;&gt;&amp; items) {\n        lookup_table.reserve(lookup_table.size() + items.size());\n        for (const auto&amp; [category, id, value] : items) {\n            insert(category, id, value);\n        }\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid lookup_table_example() {\n    FastLookupTable table;\n\n    \/\/ \u30c7\u30fc\u30bf\u6295\u5165\n    std::vector&lt;std::tuple&lt;std::string, int, std::string&gt;&gt; bulk_data = {\n        {\"A\", 1, \"Value1\"},\n        {\"A\", 2, \"Value2\"},\n        {\"B\", 1, \"Value3\"},\n        {\"B\", 2, \"Value4\"}\n    };\n\n    table.bulk_insert(bulk_data);\n\n    \/\/ \u9ad8\u901f\u691c\u7d22\n    std::cout &lt;&lt; table.find(\"A\", 1) &lt;&lt; \"\\n\";  \/\/ Value1\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\u7279\u5fb4\u3092\u6301\u3064\u30b7\u30ca\u30ea\u30aa\u3067\u7279\u306b\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u30b7\u30b9\u30c6\u30e0<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u6642\u7684\u306a\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u9ad8\u901f\u306a\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u304c\u8981\u6c42\u3055\u308c\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u30a2\u30af\u30bb\u30b9\u901f\u5ea6\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u304c\u8a31\u5bb9\u3055\u308c\u308b\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u983b\u5ea6\u30ab\u30a6\u30f3\u30bf<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u306e\u51fa\u73fe\u983b\u5ea6\u3092\u5206\u6790\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306a\u96c6\u8a08\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u52b9\u7387\u3088\u308a\u3082\u51e6\u7406\u901f\u5ea6\u304c\u91cd\u8981\u306a\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u30c6\u30fc\u30d6\u30eb<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u96d1\u306a\u30ad\u30fc\u306b\u3088\u308b\u9ad8\u901f\u691c\u7d22\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306e\u66f4\u65b0\u983b\u5ea6\u304c\u4f4e\u304f\u3001\u8aad\u307f\u53d6\u308a\u304c\u4e3b\u306a\u64cd\u4f5c\u306e\u5834\u5408<\/li>\n\n\n\n<li>\u30d0\u30eb\u30af\u64cd\u4f5c\u306e\u6700\u9069\u5316\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6027\u80fd\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3064\u3064\u3001\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-22\">\u4e00\u822c\u7684\u306a\u30d4\u30c3\u30c8\u30d5\u30a9\u30fc\u30eb\u3068\u5bfe\u7b56<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>unordered_map\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306f\u3001\u4e3b\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3067\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-24\">1. \u30dd\u30a4\u30f3\u30bf\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;unordered_map&gt;\n#include &lt;memory&gt;\n\n\/\/ \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\nclass BadExample {\n    std::unordered_map&lt;int, MyObject*&gt; objects;  \/\/ \u751f\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\npublic:\n    void add_object(int id, MyObject* obj) {\n        objects[id] = obj;  \/\/ \u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u8cac\u4efb\u304c\u4e0d\u660e\u78ba\n    }\n    ~BadExample() {\n        \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306e\u89e3\u653e\u5fd8\u308c\u306b\u3088\u308b\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\n    }\n};\n\n\/\/ \u6539\u5584\u3055\u308c\u305f\u30b3\u30fc\u30c9\nclass GoodExample {\n    std::unordered_map&lt;int, std::unique_ptr&lt;MyObject&gt;&gt; objects;\npublic:\n    void add_object(int id, std::unique_ptr&lt;MyObject&gt; obj) {\n        objects[id] = std::move(obj);  \/\/ \u6240\u6709\u6a29\u306e\u660e\u78ba\u306a\u79fb\u8ee2\n    }\n    \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u81ea\u52d5\u7684\u306b\u30e1\u30e2\u30ea\u3092\u89e3\u653e\n};\n\n\/\/ \u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5\u4f8b\nvoid smart_pointer_example() {\n    GoodExample manager;\n\n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8ffd\u52a0\n    manager.add_object(1, std::make_unique&lt;MyObject&gt;());\n\n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u81ea\u52d5\u7684\u306b\u7ba1\u7406\u3055\u308c\u308b\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-25\">2. \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u9069\u5207\u306a\u4f7f\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;unordered_map&gt;\n#include &lt;memory_resource&gt;\n\n\/\/ \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u5b89\u5168\u306a\u5b9f\u88c5\ntemplate&lt;typename K, typename V&gt;\nclass SafeAllocatedMap {\n    std::pmr::monotonic_buffer_resource buffer;\n    std::pmr::unordered_map&lt;K, V&gt; map;\n\npublic:\n    SafeAllocatedMap(size_t initial_size = 1024)\n        : buffer(initial_size)\n        , map(&amp;buffer) {\n    }\n\n    void insert(const K&amp; key, const V&amp; value) {\n        map.insert_or_assign(key, value);\n    }\n};\n\n\/\/ \u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u4f7f\u7528\u4f8b\nvoid memory_pool_example() {\n    std::array&lt;std::byte, 10000&gt; buffer;\n    std::pmr::monotonic_buffer_resource resource{buffer.data(), buffer.size()};\n\n    std::pmr::unordered_map&lt;int, std::string&gt; safe_map{&amp;resource};\n    \/\/ \u30e1\u30e2\u30ea\u306f\u30d0\u30c3\u30d5\u30a1\u304b\u3089\u5272\u308a\u5f53\u3066\u3089\u308c\u3001\u81ea\u52d5\u7684\u306b\u7ba1\u7406\u3055\u308c\u308b\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u4e26\u884c\u51e6\u7406\u3067\u306e\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56<\/h3>\n\n\n\n<p>unordered_map\u306f\u672c\u8cea\u7684\u306b\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4e26\u884c\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u9069\u5207\u306a\u540c\u671f\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-27\">1. \u57fa\u672c\u7684\u306a\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u30e9\u30c3\u30d1\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;unordered_map&gt;\n#include &lt;mutex&gt;\n#include &lt;shared_mutex&gt;\n\ntemplate&lt;typename K, typename V&gt;\nclass ThreadSafeMap {\n    mutable std::shared_mutex mutex;\n    std::unordered_map&lt;K, V&gt; map;\n\npublic:\n    \/\/ \u66f8\u304d\u8fbc\u307f\u64cd\u4f5c\uff08\u6392\u4ed6\u30ed\u30c3\u30af\uff09\n    void insert(const K&amp; key, const V&amp; value) {\n        std::unique_lock lock(mutex);\n        map[key] = value;\n    }\n\n    \/\/ \u8aad\u307f\u53d6\u308a\u64cd\u4f5c\uff08\u5171\u6709\u30ed\u30c3\u30af\uff09\n    std::optional&lt;V&gt; get(const K&amp; key) const {\n        std::shared_lock lock(mutex);\n        auto it = map.find(key);\n        if (it != map.end()) {\n            return it-&gt;second;\n        }\n        return std::nullopt;\n    }\n\n    \/\/ \u6761\u4ef6\u4ed8\u304d\u66f4\u65b0\n    bool update_if_exists(const K&amp; key, const V&amp; value) {\n        std::unique_lock lock(mutex);\n        auto it = map.find(key);\n        if (it != map.end()) {\n            it-&gt;second = value;\n            return true;\n        }\n        return false;\n    }\n};<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-28\">2. \u30ed\u30c3\u30af\u30d5\u30ea\u30fc\u306a\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3<\/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;atomic&gt;\n#include &lt;memory&gt;\n\ntemplate&lt;typename K, typename V&gt;\nclass LockFreeCache {\n    struct Node {\n        std::atomic&lt;Node*&gt; next;\n        K key;\n        V value;\n\n        Node(const K&amp; k, const V&amp; v) : next(nullptr), key(k), value(v) {}\n    };\n\n    std::atomic&lt;Node*&gt; head;\n\npublic:\n    LockFreeCache() : head(nullptr) {}\n\n    void insert(const K&amp; key, const V&amp; value) {\n        Node* new_node = new Node(key, value);\n        new_node-&gt;next = head.load(std::memory_order_relaxed);\n\n        while (!head.compare_exchange_weak(\n            new_node-&gt;next,\n            new_node,\n            std::memory_order_release,\n            std::memory_order_relaxed)) {\n        }\n    }\n\n    std::optional&lt;V&gt; get(const K&amp; key) const {\n        Node* current = head.load(std::memory_order_acquire);\n        while (current) {\n            if (current-&gt;key == key) {\n                return current-&gt;value;\n            }\n            current = current-&gt;next.load(std::memory_order_relaxed);\n        }\n        return std::nullopt;\n    }\n\n    ~LockFreeCache() {\n        Node* current = head.load(std::memory_order_relaxed);\n        while (current) {\n            Node* next = current-&gt;next;\n            delete current;\n            current = next;\n        }\n    }\n};<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-29\">\u91cd\u8981\u306a\u6ce8\u610f\u70b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u7a4d\u6975\u7684\u306a\u4f7f\u7528<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u9069\u5207\u306a\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u89e3\u653e\u306e\u78ba\u5b9f\u306a\u4fdd\u8a3c<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4e26\u884c\u51e6\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9069\u5207\u306a\u7c92\u5ea6\u3067\u306e\u30ed\u30c3\u30af\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u9632\u6b62\u306e\u8003\u616e<\/li>\n\n\n\n<li>\u8aad\u307f\u53d6\u308a\/\u66f8\u304d\u8fbc\u307f\u306e\u9069\u5207\u306a\u5206\u96e2<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ed\u30c3\u30af\u7af6\u5408\u306e\u6700\u5c0f\u5316<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u8a2d\u8a08<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5bfe\u7b56\u3092\u9069\u5207\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u5b89\u5168\u3067\u52b9\u7387\u7684\u306aunordered_map\u306e\u4f7f\u7528\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u7279\u306b\u3001\u5927\u898f\u6a21\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u9ad8\u8ca0\u8377\u306a\u74b0\u5883\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u8003\u616e\u4e8b\u9805\u304c\u91cd\u8981\u306b\u306a\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-30\">std::unordered_map\u306eC++23\u6700\u65b0\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-31\">\u65b0\u6a5f\u80fd\u3068\u6539\u5584\u70b9\u306e\u8a73\u7d30<\/h3>\n\n\n\n<p>C++23\u3067\u306f\u3001std::unordered_map\u306b\u5bfe\u3057\u3066\u91cd\u8981\u306a\u6539\u5584\u304c\u52a0\u3048\u3089\u308c\u3001\u4f7f\u3044\u3084\u3059\u3055\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-32\">1. \u30d8\u30c6\u30ed\u30b8\u30fc\u30cb\u30a2\u30b9\u691c\u7d22\u306e\u30b5\u30dd\u30fc\u30c8<\/h4>\n\n\n\n<p>C++23\u3067\u306f\u3001\u7570\u306a\u308b\u578b\u3067\u306e\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\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;unordered_map&gt;\n#include &lt;string&gt;\n#include &lt;string_view&gt;\n\n\/\/ C++23\u3067\u306e\u65b0\u3057\u3044\u4f7f\u7528\u65b9\u6cd5\nvoid heterogeneous_lookup_example() {\n    std::unordered_map&lt;std::string, int&gt; map = {\n        {\"hello\", 1},\n        {\"world\", 2}\n    };\n\n    \/\/ string_view\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u691c\u7d22\n    std::string_view key = \"hello\";\n    auto it = map.find(key);  \/\/ \u30b3\u30d4\u30fc\u306a\u3057\u3067\u691c\u7d22\u53ef\u80fd\n\n    \/\/ const char*\u3092\u76f4\u63a5\u4f7f\u7528\n    if (auto it = map.find(\"world\"); it != map.end()) {\n        std::cout &lt;&lt; \"Found: \" &lt;&lt; it-&gt;second &lt;&lt; \"\\n\";\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-33\">2. node_type\u306e\u6539\u5584<\/h4>\n\n\n\n<p>\u30ce\u30fc\u30c9\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6a5f\u80fd\u304c\u5f37\u5316\u3055\u308c\u3001\u3088\u308a\u67d4\u8edf\u306a\u30ce\u30fc\u30c9\u64cd\u4f5c\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\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;unordered_map&gt;\n\nvoid node_handling_example() {\n    std::unordered_map&lt;int, std::string&gt; map1 = {{1, \"one\"}, {2, \"two\"}};\n    std::unordered_map&lt;int, std::string&gt; map2;\n\n    \/\/ \u30ce\u30fc\u30c9\u306e\u62bd\u51fa\u3068\u79fb\u52d5\n    if (auto node = map1.extract(1); !node.empty()) {\n        \/\/ \u30ce\u30fc\u30c9\u306e\u5024\u3092\u4fee\u6b63\n        node.key() = 100;\n        node.mapped() = \"hundred\";\n\n        \/\/ \u4fee\u6b63\u3057\u305f\u30ce\u30fc\u30c9\u3092\u4ed6\u306e\u30de\u30c3\u30d7\u306b\u633f\u5165\n        auto [pos, inserted] = map2.insert(std::move(node));\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-34\">3. \u52b9\u7387\u7684\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/h4>\n\n\n\n<p>C++23\u3067\u306f\u3001\u64cd\u4f5c\u306e\u6210\u529f\/\u5931\u6557\u3092\u3088\u308a\u52b9\u7387\u7684\u306b\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\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;unordered_map&gt;\n#include &lt;expected&gt;\n\ntemplate&lt;typename K, typename V&gt;\nclass SafeMap {\n    std::unordered_map&lt;K, V&gt; map;\n\npublic:\n    \/\/ C++23\u306eexpected\u3092\u4f7f\u7528\u3057\u305f\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\n    std::expected&lt;V, std::error_code&gt; try_get(const K&amp; key) {\n        if (auto it = map.find(key); it != map.end()) {\n            return it-&gt;second;\n        }\n        return std::unexpected(std::make_error_code(std::errc::no_such_file_or_directory));\n    }\n\n    \/\/ \u30a8\u30e9\u30fc\u60c5\u5831\u3092\u542b\u3080\u633f\u5165\u64cd\u4f5c\n    std::expected&lt;bool, std::error_code&gt; try_insert(const K&amp; key, const V&amp; value) {\n        try {\n            auto [it, inserted] = map.insert_or_assign(key, value);\n            return inserted;\n        } catch (const std::bad_alloc&amp;) {\n            return std::unexpected(std::make_error_code(std::errc::not_enough_memory));\n        }\n    }\n};<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-35\">4. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/h4>\n\n\n\n<p>C++23\u3067\u306f\u3001\u5185\u90e8\u5b9f\u88c5\u306e\u6700\u9069\u5316\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u64cd\u4f5c\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u3066\u3044\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;unordered_map&gt;\n#include &lt;chrono&gt;\n\nvoid performance_improvements_demo() {\n    std::unordered_map&lt;std::string, int&gt; map;\n\n    \/\/ \u30ea\u30b6\u30fc\u30d6\u3068\u30a8\u30df\u30c3\u30c8\u306e\u6700\u9069\u5316\n    map.reserve(1000);\n\n    auto start = std::chrono::high_resolution_clock::now();\n\n    \/\/ \u52b9\u7387\u7684\u306a\u8981\u7d20\u306e\u8ffd\u52a0\uff08\u30a8\u30df\u30c3\u30c8\u306e\u6700\u9069\u5316\uff09\n    for (int i = 0; i &lt; 1000; ++i) {\n        map.emplace(std::to_string(i), i);\n    }\n\n    auto end = std::chrono::high_resolution_clock::now();\n    auto duration = std::chrono::duration_cast&lt;std::chrono::microseconds&gt;(end - start);\n\n    std::cout &lt;&lt; \"\u633f\u5165\u6642\u9593: \" &lt;&lt; duration.count() &lt;&lt; \"\u30de\u30a4\u30af\u30ed\u79d2\\n\";\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-36\">\u5c06\u6765\u306e\u958b\u767a\u306b\u5411\u3051\u305f\u5c55\u671b<\/h3>\n\n\n\n<p>C++23\u4ee5\u964d\u306e\u958b\u767a\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6539\u5584\u304c\u671f\u5f85\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u66f4\u306a\u308b\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u52b9\u7387\u5316<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u52b9\u7387\u306e\u6539\u5584<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5c06\u6765\u7684\u306a\u6700\u9069\u5316\u306e\u4f8b\uff08\u6982\u5ff5\u5b9f\u88c5\uff09\ntemplate&lt;typename K, typename V&gt;\nclass FutureOptimizedMap {\n    \/\/ \u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd\u306a\u30cf\u30c3\u30b7\u30e5\u6226\u7565\n    struct OptimizedHash {\n        size_t operator()(const K&amp; key) const {\n            \/\/ \u5c06\u6765\u7684\u306b\u3088\u308a\u52b9\u7387\u7684\u306a\u30cf\u30c3\u30b7\u30e5\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\n            return std::hash&lt;K&gt;{}(key);\n        }\n    };\n\n    std::unordered_map&lt;K, V, OptimizedHash&gt; map;\n\npublic:\n    \/\/ \u5c06\u6765\u7684\u306aAPI\u306e\u4f8b\n    template&lt;typename... Args&gt;\n    auto emplace_optimized(Args&amp;&amp;... args) {\n        \/\/ \u3088\u308a\u52b9\u7387\u7684\u306a\u8981\u7d20\u69cb\u7bc9\n        return map.emplace(std::forward&lt;Args&gt;(args)...);\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u65b0\u3057\u3044API\u306e\u8ffd\u52a0<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3088\u308a\u76f4\u611f\u7684\u306a\u64cd\u4f5c\u30e1\u30bd\u30c3\u30c9<\/li>\n\n\n\n<li>\u4e26\u884c\u51e6\u7406\u306e\u30b5\u30dd\u30fc\u30c8\u5f37\u5316<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u6539\u5584<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5c06\u6765\u7684\u306aAPI\u4f8b\uff08\u6982\u5ff5\u5b9f\u88c5\uff09\ntemplate&lt;typename K, typename V&gt;\nclass FutureMap {\n    std::unordered_map&lt;K, V&gt; map;\n\npublic:\n    \/\/ \u6761\u4ef6\u4ed8\u304d\u64cd\u4f5c\u306e\u7c21\u7565\u5316\n    template&lt;typename Pred&gt;\n    bool update_if(const K&amp; key, Pred pred) {\n        if (auto it = map.find(key); it != map.end()) {\n            return pred(it-&gt;second);\n        }\n        return false;\n    }\n\n    \/\/ \u7bc4\u56f2\u30d9\u30fc\u30b9\u306e\u64cd\u4f5c\n    template&lt;typename Range&gt;\n    void bulk_insert(Range&amp;&amp; range) {\n        map.reserve(map.size() + std::distance(\n            std::begin(range), std::end(range)));\n        for (auto&amp;&amp; item : range) {\n            map.insert(std::forward&lt;decltype(item)&gt;(item));\n        }\n    }\n};<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u4e26\u884c\u51e6\u7406\u306e\u30b5\u30dd\u30fc\u30c8\u5f37\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ed\u30c3\u30af\u30d5\u30ea\u30fc\u306a\u64cd\u4f5c\u306e\u30b5\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li>\u4e26\u884c\u30a2\u30af\u30bb\u30b9\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30a2\u30c8\u30df\u30c3\u30af\u64cd\u4f5c\u306e\u62e1\u5145<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6539\u5584\u306b\u3088\u308a\u3001std::unordered_map\u306f\u4eca\u5f8c\u3055\u3089\u306b\u4f7f\u3044\u3084\u3059\u304f\u3001\u52b9\u7387\u7684\u306a\u30b3\u30f3\u30c6\u30ca\u3068\u306a\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u307e\u3059\u3002\u958b\u767a\u8005\u306f\u3001\u3053\u308c\u3089\u306e\u65b0\u6a5f\u80fd\u3068\u6539\u5584\u70b9\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u9ad8\u54c1\u8cea\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":{"0":"post-1987","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\/1987","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=1987"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1987\/revisions"}],"predecessor-version":[{"id":1988,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1987\/revisions\/1988"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}