{"id":1859,"date":"2025-03-24T08:49:46","date_gmt":"2025-03-23T23:49:46","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1859"},"modified":"2025-03-24T08:49:46","modified_gmt":"2025-03-23T23:49:46","slug":"%e5%ae%8c%e5%85%a8%e3%83%9e%e3%82%b9%e3%82%bf%e3%83%bc%ef%bc%81c%e3%81%aefind%e3%83%a1%e3%82%bd%e3%83%83%e3%83%89%e6%b4%bb%e7%94%a8%e8%a1%9310%e9%81%b8-%e7%8f%be%e5%a0%b4%e3%81%a7%e4%bd%bf","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1859","title":{"rendered":"\u5b8c\u5168\u30de\u30b9\u30bf\u30fc\uff01C++\u306efind\u30e1\u30bd\u30c3\u30c9\u6d3b\u7528\u885310\u9078 &#8211; \u73fe\u5834\u3067\u4f7f\u3048\u308b\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\">    <span><\/span>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-0\">C++ find\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u790e\u77e5\u8b58<\/a>      <\/li>      <li>        <a href=\"#i-3\">find\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/a>      <\/li>      <li>        <a href=\"#i-7\">\u5b9f\u8df5\u7684\u306afind\u306e\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3<\/a>      <\/li>      <li>        <a href=\"#i-11\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-15\">find\u30e1\u30bd\u30c3\u30c9\u306e\u4ee3\u66ff\u624b\u6bb5\u3068\u4f7f\u3044\u5206\u3051<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u5b9f\u52d9\u3067\u3088\u304f\u3042\u308b\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-21\">include<\/a>  <\/li>  <li class=\"last\">    <a href=\"#i-22\">include<\/a>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">C++ find\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">STL\u306efind\u30e1\u30bd\u30c3\u30c9\u3068\u306f\u4f55\u304b\uff1f\u5b9f\u8df5\u7684\u306a\u89e3\u8aac<\/h3>\n\n\n\n<p>STL\u306efind\u30e1\u30bd\u30c3\u30c9\u306f\u3001C++\u6a19\u6e96\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\uff08STL\uff09\u306b\u542b\u307e\u308c\u308b\u5f37\u529b\u306a\u691c\u7d22\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30b7\u30fc\u30b1\u30f3\u30b9\u30b3\u30f3\u30c6\u30ca\u5185\u306e\u8981\u7d20\u3092\u7dda\u5f62\u306b\u63a2\u7d22\u3057\u3001\u6307\u5b9a\u3055\u308c\u305f\u5024\u3068\u4e00\u81f4\u3059\u308b\u6700\u521d\u306e\u8981\u7d20\u3092\u898b\u3064\u3051\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>find\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">template&lt;class InputIterator, class T&gt;\nInputIterator find(InputIterator first, InputIterator last, const T&amp; value);<\/pre>\n\n\n\n<p>\u4e3b\u306a\u7279\u5fb4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a4\u30c6\u30ec\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u64cd\u4f5c<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u95a2\u6570\u3068\u3057\u3066\u5b9f\u88c5<\/li>\n\n\n\n<li>\u6c4e\u7528\u7684\u306a\u578b\u3067\u306e\u4f7f\u7528\u304c\u53ef\u80fd<\/li>\n\n\n\n<li>O(n)\u306e\u6642\u9593\u8a08\u7b97\u91cf<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">find\u30e1\u30bd\u30c3\u30c9\u304c\u89e3\u6c7a\u3059\u308b3\u3064\u306e\u8ab2\u984c<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u691c\u7d22\u306e\u6a19\u6e96\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5f93\u6765\u306e\u65b9\u6cd5\uff08\u624b\u52d5\u30eb\u30fc\u30d7\uff09\nvector&lt;int&gt; numbers = {1, 2, 3, 4, 5};\nint target = 3;\nfor(size_t i = 0; i &lt; numbers.size(); i++) {\n    if(numbers[i] == target) {\n        \/\/ \u8981\u7d20\u304c\u898b\u3064\u304b\u3063\u305f\n        break;\n    }\n}\n\n\/\/ find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u305f\u5834\u5408\nauto it = find(numbers.begin(), numbers.end(), target);\nif(it != numbers.end()) {\n    \/\/ \u8981\u7d20\u304c\u898b\u3064\u304b\u3063\u305f\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u578b\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ find\u30e1\u30bd\u30c3\u30c9\u306f\u578b\u30c1\u30a7\u30c3\u30af\u3092\u81ea\u52d5\u7684\u306b\u884c\u3046\nvector&lt;string&gt; names = {\"Alice\", \"Bob\", \"Charlie\"};\nstring target = \"Bob\";\nauto it = find(names.begin(), names.end(), target);  \/\/ \u578b\u5b89\u5168\u306a\u691c\u7d22<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30a4\u30c6\u30ec\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u64cd\u4f5c\u306b\u3088\u308b\u67d4\u8edf\u6027<\/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=\"\">\/\/ \u90e8\u5206\u7bc4\u56f2\u3067\u306e\u691c\u7d22\u3082\u7c21\u5358\u306b\u5b9f\u88c5\u53ef\u80fd\nvector&lt;int&gt; numbers = {1, 2, 3, 4, 5, 3, 6};\nauto start = numbers.begin() + 2;  \/\/ 3\u756a\u76ee\u306e\u8981\u7d20\u304b\u3089\nauto end = numbers.begin() + 5;    \/\/ 6\u756a\u76ee\u306e\u8981\u7d20\u307e\u3067\nauto it = find(start, end, 3);     \/\/ \u90e8\u5206\u7bc4\u56f2\u3067\u306e\u691c\u7d22<\/pre>\n\n\n\n<p>find\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u3053\u308c\u3089\u306e\u8ab2\u984c\u3092\u52b9\u7387\u7684\u306b\u89e3\u6c7a\u3059\u308b\u3053\u3068\u3067\u3001C++\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u691c\u7d22\u64cd\u4f5c\u3092\u5927\u5e45\u306b\u7c21\u7d20\u5316\u3057\u3001\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001STL\u306e\u4ed6\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u9023\u643a\u3067\u304d\u308b\u70b9\u3082\u3001\u5927\u304d\u306a\u5229\u70b9\u306e\u4e00\u3064\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">find\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u914d\u5217\u3067\u306e\u8981\u7d20\u691c\u7d22\u306e\u5177\u4f53\u4f8b<\/h3>\n\n\n\n<p>find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u305f\u914d\u5217\u8981\u7d20\u306e\u691c\u7d22\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u57fa\u672c\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u3067\u5b9f\u8df5\u7684\u306a\u4f8b\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\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;algorithm&gt;\n#include &lt;vector&gt;\n#include &lt;iostream&gt;\n\nint main() {\n    \/\/ \u57fa\u672c\u7684\u306a\u6574\u6570\u914d\u5217\u3067\u306e\u691c\u7d22\n    std::vector&lt;int&gt; numbers = {1, 3, 5, 7, 9, 11, 13};\n    int target = 7;\n\n    \/\/ find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u305f\u691c\u7d22\n    auto it = std::find(numbers.begin(), numbers.end(), target);\n\n    \/\/ \u691c\u7d22\u7d50\u679c\u306e\u78ba\u8a8d\n    if (it != numbers.end()) {\n        std::cout &lt;&lt; \"\u8981\u7d20 \" &lt;&lt; target &lt;&lt; \" \u306f\u4f4d\u7f6e \" \n                 &lt;&lt; std::distance(numbers.begin(), it) &lt;&lt; \" \u3067\u898b\u3064\u304b\u308a\u307e\u3057\u305f\" &lt;&lt; std::endl;\n    } else {\n        std::cout &lt;&lt; \"\u8981\u7d20 \" &lt;&lt; target &lt;&lt; \" \u306f\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\" &lt;&lt; std::endl;\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u623b\u308a\u5024\u3092\u4f7f\u3044\u3053\u306a\u3059\u30b3\u30c4<\/h3>\n\n\n\n<p>find\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8fd4\u3055\u308c\u308b\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;vector&gt;\n#include &lt;string&gt;\n#include &lt;algorithm&gt;\n\nvoid demonstrate_iterator_usage() {\n    std::vector&lt;std::string&gt; names = {\"Alice\", \"Bob\", \"Charlie\", \"David\"};\n\n    \/\/ 1. \u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3068\u4fee\u6b63\n    auto it = std::find(names.begin(), names.end(), \"Bob\");\n    if (it != names.end()) {\n        *it = \"Bobby\";  \/\/ \u898b\u3064\u304b\u3063\u305f\u8981\u7d20\u3092\u76f4\u63a5\u4fee\u6b63\n    }\n\n    \/\/ 2. \u4f4d\u7f6e\u60c5\u5831\u306e\u53d6\u5f97\n    auto charlie_it = std::find(names.begin(), names.end(), \"Charlie\");\n    if (charlie_it != names.end()) {\n        size_t index = std::distance(names.begin(), charlie_it);\n        \/\/ index\u3092\u4f7f\u3063\u305f\u51e6\u7406\n    }\n\n    \/\/ 3. \u7bc4\u56f2\u30d9\u30fc\u30b9\u306e\u64cd\u4f5c\n    auto start_it = std::find(names.begin(), names.end(), \"Alice\");\n    auto end_it = std::find(names.begin(), names.end(), \"David\");\n    if (start_it != names.end() &amp;&amp; end_it != names.end()) {\n        \/\/ start_it\u304b\u3089end_it\u307e\u3067\u306e\u7bc4\u56f2\u3067\u64cd\u4f5c\u3092\u884c\u3046\n        std::vector&lt;std::string&gt; subset(start_it, end_it);\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u9069\u5207\u306a\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u306e\u6271\u3044\u65b9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;stdexcept&gt;\n\nclass DataNotFoundException : public std::runtime_error {\npublic:\n    explicit DataNotFoundException(const std::string&amp; message) \n        : std::runtime_error(message) {}\n};\n\ntemplate&lt;typename Container, typename T&gt;\ntypename Container::iterator findWithValidation(Container&amp; container, const T&amp; value) {\n    \/\/ 1. \u30b3\u30f3\u30c6\u30ca\u304c\u7a7a\u306e\u5834\u5408\u306e\u30c1\u30a7\u30c3\u30af\n    if (container.empty()) {\n        throw DataNotFoundException(\"\u7a7a\u306e\u30b3\u30f3\u30c6\u30ca\u306b\u5bfe\u3057\u3066\u691c\u7d22\u3092\u5b9f\u884c\u3057\u3088\u3046\u3068\u3057\u307e\u3057\u305f\");\n    }\n\n    \/\/ 2. \u8981\u7d20\u306e\u691c\u7d22\n    auto it = std::find(container.begin(), container.end(), value);\n\n    \/\/ 3. \u691c\u7d22\u7d50\u679c\u306e\u691c\u8a3c\n    if (it == container.end()) {\n        throw DataNotFoundException(\"\u6307\u5b9a\u3055\u308c\u305f\u8981\u7d20\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\");\n    }\n\n    return it;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid demonstrate_error_handling() {\n    try {\n        std::vector&lt;int&gt; numbers = {1, 2, 3, 4, 5};\n        auto it = findWithValidation(numbers, 6);  \/\/ \u5b58\u5728\u3057\u306a\u3044\u5024\u3092\u691c\u7d22\n    } catch (const DataNotFoundException&amp; e) {\n        std::cerr &lt;&lt; \"\u30a8\u30e9\u30fc: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n    } catch (...) {\n        std::cerr &lt;&lt; \"\u4e88\u671f\u3057\u306a\u3044\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\" &lt;&lt; std::endl;\n    }\n}<\/pre>\n\n\n\n<p>\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u660e\u793a\u7684\u306a\u4f8b\u5916\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u691c\u7d22\u95a2\u9023\u306e\u4f8b\u5916\u3092\u5c02\u7528\u306e\u30af\u30e9\u30b9\u3067\u5b9a\u7fa9<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8a73\u7d30\u306b\u8a18\u8ff0<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5883\u754c\u6761\u4ef6\u306e\u30c1\u30a7\u30c3\u30af<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7a7a\u306e\u30b3\u30f3\u30c6\u30ca\u306e\u51e6\u7406<\/li>\n\n\n\n<li>\u7121\u52b9\u306a\u7bc4\u56f2\u306e\u51e6\u7406<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u5236\u7d04\u306e\u8003\u616e<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u306e\u4f1d\u64ad\u3068\u51e6\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9069\u5207\u306a\u5834\u6240\u3067\u306etry-catch<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30ed\u30b0\u306e\u8a18\u9332<\/li>\n\n\n\n<li>\u56de\u5fa9\u53ef\u80fd\u306a\u30a8\u30e9\u30fc\u306e\u51e6\u7406\u65b9\u6cd5<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001find\u30e1\u30bd\u30c3\u30c9\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3088\u308a\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">\u5b9f\u8df5\u7684\u306afind\u306e\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u6587\u5b57\u5217\u691c\u7d22\u3067\u306e\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u6587\u5b57\u5217\u691c\u7d22\u306b\u304a\u3051\u308bfind\u30e1\u30bd\u30c3\u30c9\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;string&gt;\n#include &lt;vector&gt;\n#include &lt;algorithm&gt;\n\nclass StringSearcher {\npublic:\n    \/\/ \u5927\u6587\u5b57\u5c0f\u6587\u5b57\u3092\u533a\u5225\u3057\u306a\u3044\u691c\u7d22\n    static bool findCaseInsensitive(const std::string&amp; haystack, const std::string&amp; needle) {\n        auto it = std::search(\n            haystack.begin(), haystack.end(),\n            needle.begin(), needle.end(),\n            [](char ch1, char ch2) {\n                return std::tolower(ch1) == std::tolower(ch2);\n            }\n        );\n        return it != haystack.end();\n    }\n\n    \/\/ \u90e8\u5206\u6587\u5b57\u5217\u306e\u5168\u51fa\u73fe\u4f4d\u7f6e\u3092\u691c\u7d22\n    static std::vector&lt;size_t&gt; findAllOccurrences(const std::string&amp; text, const std::string&amp; pattern) {\n        std::vector&lt;size_t&gt; positions;\n        size_t pos = 0;\n        while ((pos = text.find(pattern, pos)) != std::string::npos) {\n            positions.push_back(pos);\n            pos += pattern.length();\n        }\n        return positions;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30ab\u30b9\u30bf\u30e0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306e\u691c\u7d22\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u3059\u308bfind\u306e\u5b9f\u88c5\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;algorithm&gt;\n#include &lt;vector&gt;\n\nclass Employee {\nprivate:\n    int id;\n    std::string name;\n    std::string department;\n\npublic:\n    Employee(int id, std::string name, std::string department)\n        : id(id), name(std::move(name)), department(std::move(department)) {}\n\n    \/\/ \u6bd4\u8f03\u6f14\u7b97\u5b50\u306e\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\n    bool operator==(const Employee&amp; other) const {\n        return id == other.id;  \/\/ ID\u306b\u3088\u308b\u6bd4\u8f03\n    }\n\n    \/\/ \u30b2\u30c3\u30bf\u30fc\u30e1\u30bd\u30c3\u30c9\n    int getId() const { return id; }\n    const std::string&amp; getName() const { return name; }\n    const std::string&amp; getDepartment() const { return department; }\n};\n\nclass EmployeeSearch {\npublic:\n    \/\/ ID \u306b\u3088\u308b\u691c\u7d22\n    static Employee* findById(std::vector&lt;Employee&gt;&amp; employees, int targetId) {\n        auto it = std::find_if(employees.begin(), employees.end(),\n            [targetId](const Employee&amp; emp) {\n                return emp.getId() == targetId;\n            });\n        return it != employees.end() ? &amp;(*it) : nullptr;\n    }\n\n    \/\/ \u90e8\u9580\u306b\u3088\u308b\u691c\u7d22\uff08\u8907\u6570\u306e\u7d50\u679c\u3092\u8fd4\u3059\u53ef\u80fd\u6027\uff09\n    static std::vector&lt;Employee*&gt; findByDepartment(std::vector&lt;Employee&gt;&amp; employees, \n                                                 const std::string&amp; targetDept) {\n        std::vector&lt;Employee*&gt; result;\n        for (auto&amp; emp : employees) {\n            if (emp.getDepartment() == targetDept) {\n                result.push_back(&amp;emp);\n            }\n        }\n        return result;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u4e26\u5217\u51e6\u7406\u3067\u306e\u52b9\u7387\u7684\u306a\u691c\u7d22\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306b\u5bfe\u3059\u308b\u4e26\u5217\u691c\u7d22\u306e\u5b9f\u88c5\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;execution&gt;\n#include &lt;algorithm&gt;\n#include &lt;vector&gt;\n#include &lt;future&gt;\n\ntemplate&lt;typename T&gt;\nclass ParallelFinder {\npublic:\n    \/\/ \u4e26\u5217\u691c\u7d22\u306e\u5b9f\u88c5\n    static std::vector&lt;size_t&gt; findParallel(const std::vector&lt;T&gt;&amp; data, const T&amp; target, \n                                          size_t numThreads = std::thread::hardware_concurrency()) {\n        std::vector&lt;size_t&gt; results;\n        std::mutex resultMutex;\n\n        \/\/ \u30c7\u30fc\u30bf\u3092\u5206\u5272\u3057\u3066\u4e26\u5217\u51e6\u7406\n        size_t chunkSize = data.size() \/ numThreads;\n        std::vector&lt;std::future&lt;void&gt;&gt; futures;\n\n        for (size_t i = 0; i &lt; numThreads; ++i) {\n            size_t start = i * chunkSize;\n            size_t end = (i == numThreads - 1) ? data.size() : (i + 1) * chunkSize;\n\n            futures.push_back(std::async(std::launch::async, [&amp;, start, end]() {\n                auto it = std::find(data.begin() + start, data.begin() + end, target);\n                while (it != data.begin() + end) {\n                    std::lock_guard&lt;std::mutex&gt; lock(resultMutex);\n                    results.push_back(std::distance(data.begin(), it));\n                    it = std::find(it + 1, data.begin() + end, target);\n                }\n            }));\n        }\n\n        \/\/ \u5168\u3066\u306e\u30b9\u30ec\u30c3\u30c9\u306e\u5b8c\u4e86\u3092\u5f85\u3064\n        for (auto&amp; future : futures) {\n            future.wait();\n        }\n\n        \/\/ \u7d50\u679c\u3092\u30bd\u30fc\u30c8\n        std::sort(results.begin(), results.end());\n        return results;\n    }\n\n    \/\/ C++17\u4ee5\u964d\u3067\u306e\u4e26\u5217\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5\n    static std::vector&lt;size_t&gt; findParallelSTL(const std::vector&lt;T&gt;&amp; data, const T&amp; target) {\n        std::vector&lt;size_t&gt; indices(data.size());\n        std::iota(indices.begin(), indices.end(), 0);\n\n        std::vector&lt;size_t&gt; results;\n        std::copy_if(std::execution::par, indices.begin(), indices.end(), \n                    std::back_inserter(results),\n                    [&amp;data, target](size_t i) { return data[i] == target; });\n\n        return results;\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u8df5\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u5b9f\u969b\u306e\u958b\u767a\u73fe\u5834\u3067\u983b\u7e41\u306b\u5fc5\u8981\u3068\u3055\u308c\u308b\u5b9f\u88c5\u4f8b\u3067\u3059\u3002\u7279\u306b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6587\u5b57\u5217\u691c\u7d22\u3067\u306e\u5927\u6587\u5b57\u5c0f\u6587\u5b57\u306e\u533a\u5225\u3084\u90e8\u5206\u4e00\u81f4<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306e\u67d4\u8edf\u306a\u691c\u7d22\u6761\u4ef6\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306b\u5bfe\u3059\u308b\u52b9\u7387\u7684\u306a\u4e26\u5217\u691c\u7d22<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-11\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u691c\u7d22\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b3\u3064\u306e\u65b9\u6cd5<\/h3>\n\n\n\n<p>find\u30e1\u30bd\u30c3\u30c9\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u4e3b\u8981\u306a\u624b\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;vector&gt;\n#include &lt;algorithm&gt;\n#include &lt;chrono&gt;\n#include &lt;unordered_set&gt;\n\nclass SearchOptimizer {\npublic:\n    \/\/ 1. \u30c7\u30fc\u30bf\u306e\u4e8b\u524d\u30bd\u30fc\u30c8\u306b\u3088\u308b\u6700\u9069\u5316\n    template&lt;typename T&gt;\n    static bool optimizedFind(std::vector&lt;T&gt;&amp; data, const T&amp; target) {\n        \/\/ \u30c7\u30fc\u30bf\u3092\u30bd\u30fc\u30c8\uff08\u691c\u7d22\u524d\u306b\u4e00\u5ea6\u3060\u3051\u5b9f\u884c\uff09\n        std::sort(data.begin(), data.end());\n\n        \/\/ \u4e8c\u5206\u63a2\u7d22\u3092\u4f7f\u7528\n        return std::binary_search(data.begin(), data.end(), target);\n    }\n\n    \/\/ 2. \u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u7528\u3057\u305f\u6700\u9069\u5316\n    template&lt;typename T&gt;\n    static bool hashBasedFind(const std::vector&lt;T&gt;&amp; data, const T&amp; target) {\n        \/\/ \u30cf\u30c3\u30b7\u30e5\u30bb\u30c3\u30c8\u306e\u69cb\u7bc9\uff08\u691c\u7d22\u524d\u306b\u4e00\u5ea6\u3060\u3051\u5b9f\u884c\uff09\n        std::unordered_set&lt;T&gt; hashSet(data.begin(), data.end());\n\n        \/\/ O(1)\u3067\u306e\u691c\u7d22\n        return hashSet.find(target) != hashSet.end();\n    }\n\n    \/\/ 3. \u4e26\u5217\u51e6\u7406\u3092\u6d3b\u7528\u3057\u305f\u6700\u9069\u5316\n    template&lt;typename T&gt;\n    static bool parallelFind(const std::vector&lt;T&gt;&amp; data, const T&amp; target) {\n        return std::any_of(\n            std::execution::par,\n            data.begin(), data.end(),\n            [&amp;target](const T&amp; element) { return element == target; }\n        );\n    }\n};\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c\u7528\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\nclass PerformanceTimer {\n    using Clock = std::chrono::high_resolution_clock;\n    using TimePoint = Clock::time_point;\n\n    TimePoint start;\npublic:\n    PerformanceTimer() : start(Clock::now()) {}\n\n    double elapsed() {\n        auto end = Clock::now();\n        return std::chrono::duration&lt;double, std::milli&gt;(end - start).count();\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316\u624b\u6cd5<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u52b9\u7387\u3092\u8003\u616e\u3057\u305ffind\u306e\u5b9f\u88c5\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;memory&gt;\n#include &lt;forward_list&gt;\n\nclass MemoryOptimizer {\npublic:\n    \/\/ 1. \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u30b3\u30f3\u30c6\u30ca\u306e\u9078\u629e\n    template&lt;typename T&gt;\n    static bool findInForwardList(const std::forward_list&lt;T&gt;&amp; data, const T&amp; target) {\n        return std::find(data.begin(), data.end(), target) != data.end();\n    }\n\n    \/\/ 2. \u30ab\u30b9\u30bf\u30e0\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u4f7f\u7528\n    template&lt;typename T&gt;\n    static bool findWithCustomAllocator(\n        const std::vector&lt;T, std::allocator&lt;T&gt;&gt;&amp; data,\n        const T&amp; target) {\n        return std::find(data.begin(), data.end(), target) != data.end();\n    }\n\n    \/\/ 3. \u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u306e\u5b9f\u88c5\n    class MemoryPool {\n        static constexpr size_t POOL_SIZE = 1024;\n        std::array&lt;uint8_t, POOL_SIZE&gt; pool;\n        size_t current_pos = 0;\n\n    public:\n        void* allocate(size_t size) {\n            if (current_pos + size &gt; POOL_SIZE) return nullptr;\n            void* result = &amp;pool[current_pos];\n            current_pos += size;\n            return result;\n        }\n\n        void reset() { current_pos = 0; }\n    };\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u3067\u306e\u52b9\u7387\u7684\u306a\u691c\u7d22\u6226\u7565<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306b\u5bfe\u3059\u308b\u6700\u9069\u5316\u6226\u7565\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;thread&gt;\n#include &lt;future&gt;\n\nclass LargeDatasetOptimizer {\npublic:\n    \/\/ 1. \u30c1\u30e3\u30f3\u30af\u5206\u5272\u306b\u3088\u308b\u6bb5\u968e\u7684\u691c\u7d22\n    template&lt;typename T&gt;\n    static std::optional&lt;size_t&gt; findInChunks(const std::vector&lt;T&gt;&amp; data, \n                                            const T&amp; target, \n                                            size_t chunk_size = 1000) {\n        for (size_t i = 0; i &lt; data.size(); i += chunk_size) {\n            auto chunk_end = std::min(i + chunk_size, data.size());\n            auto it = std::find(data.begin() + i, data.begin() + chunk_end, target);\n            if (it != data.begin() + chunk_end) {\n                return std::distance(data.begin(), it);\n            }\n        }\n        return std::nullopt;\n    }\n\n    \/\/ 2. \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u305f\u691c\u7d22\u306e\u6700\u9069\u5316\n    template&lt;typename T&gt;\n    class IndexedSearch {\n        std::unordered_map&lt;T, std::vector&lt;size_t&gt;&gt; index;\n\n    public:\n        void buildIndex(const std::vector&lt;T&gt;&amp; data) {\n            for (size_t i = 0; i &lt; data.size(); ++i) {\n                index[data[i]].push_back(i);\n            }\n        }\n\n        std::vector&lt;size_t&gt; find(const T&amp; target) const {\n            auto it = index.find(target);\n            return it != index.end() ? it-&gt;second : std::vector&lt;size_t&gt;();\n        }\n    };\n};\n\n\/\/ \u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7d50\u679c\u306e\u4f8b\uff08\u5b9f\u969b\u306e\u5024\u306f\u74b0\u5883\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\uff09\uff1a\n\/*\n\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba: 1,000,000\u8981\u7d20\n- \u901a\u5e38\u306efind:           45.3ms\n- \u30bd\u30fc\u30c8+\u4e8c\u5206\u63a2\u7d22:      0.8ms\n- \u30cf\u30c3\u30b7\u30e5\u30d9\u30fc\u30b9\u691c\u7d22:    0.1ms\n- \u4e26\u5217find:            12.1ms\n\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf:\n- vector:              8MB\n- forward_list:        12MB\n- \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf:    7.5MB\n*\/<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u9078\u629e<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u691c\u7d22\u983b\u5ea6\u304c\u9ad8\u3044\u5834\u5408\u306f\u3001\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u30bd\u30fc\u30c8\u6e08\u307f\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u306f\u4e8c\u5206\u63a2\u7d22\u3092\u6d3b\u7528<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u306b\u5fdc\u3058\u3066\u4e26\u5217\u51e6\u7406\u3092\u691c\u8a0e<\/li>\n<\/ul>\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>\u9069\u5207\u306a\u30b3\u30f3\u30c6\u30ca\u306e\u9078\u629e<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u5bfe\u7b56<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u306e\u5206\u5272\u51e6\u7406<\/li>\n\n\n\n<li>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u52b9\u7387\u306e\u8003\u616e<\/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\u3001find\u30e1\u30bd\u30c3\u30c9\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">find\u30e1\u30bd\u30c3\u30c9\u306e\u4ee3\u66ff\u624b\u6bb5\u3068\u4f7f\u3044\u5206\u3051<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">find_if\u3068\u306e\u6bd4\u8f03\u3068\u4f7f\u3044\u5206\u3051\u306e\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<p>find\u3068find_if\u306e\u4f7f\u3044\u5206\u3051\u306b\u3064\u3044\u3066\u3001\u5b9f\u8df5\u7684\u306a\u4f8b\u3092\u4ea4\u3048\u3066\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;algorithm&gt;\n#include &lt;vector&gt;\n#include &lt;string&gt;\n\nclass SearchComparison {\npublic:\n    \/\/ find\u30e1\u30bd\u30c3\u30c9\u306e\u5178\u578b\u7684\u306a\u4f7f\u7528\u4f8b\n    static void demonstrateFind() {\n        std::vector&lt;int&gt; numbers = {1, 2, 3, 4, 5};\n\n        \/\/ \u5358\u7d14\u306a\u5024\u306e\u691c\u7d22\n        auto it = std::find(numbers.begin(), numbers.end(), 3);\n        if (it != numbers.end()) {\n            std::cout &lt;&lt; \"\u5024 3 \u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f: \" &lt;&lt; *it &lt;&lt; std::endl;\n        }\n    }\n\n    \/\/ find_if\u30e1\u30bd\u30c3\u30c9\u306e\u5178\u578b\u7684\u306a\u4f7f\u7528\u4f8b\n    static void demonstrateFindIf() {\n        std::vector&lt;int&gt; numbers = {1, 2, 3, 4, 5};\n\n        \/\/ \u6761\u4ef6\u306b\u57fa\u3065\u304f\u691c\u7d22\n        auto it = std::find_if(numbers.begin(), numbers.end(),\n            [](int n) { return n % 2 == 0 &amp;&amp; n &gt; 2; });\n        if (it != numbers.end()) {\n            std::cout &lt;&lt; \"\u6761\u4ef6\u3092\u6e80\u305f\u3059\u6700\u521d\u306e\u5024: \" &lt;&lt; *it &lt;&lt; std::endl;\n        }\n    }\n\n    \/\/ \u5b9f\u8df5\u7684\u306a\u4f8b\uff1a\u30e6\u30fc\u30b6\u30fc\u691c\u7d22\n    struct User {\n        std::string name;\n        int age;\n        std::string role;\n\n        User(std::string n, int a, std::string r)\n            : name(std::move(n)), age(a), role(std::move(r)) {}\n\n        \/\/ find\u7528\u306e\u7b49\u4fa1\u6bd4\u8f03\u6f14\u7b97\u5b50\n        bool operator==(const User&amp; other) const {\n            return name == other.name &amp;&amp; age == other.age;\n        }\n    };\n\n    static void demonstrateUserSearch() {\n        std::vector&lt;User&gt; users = {\n            User(\"Alice\", 25, \"admin\"),\n            User(\"Bob\", 30, \"user\"),\n            User(\"Charlie\", 35, \"user\")\n        };\n\n        \/\/ find\u306b\u3088\u308b\u5b8c\u5168\u4e00\u81f4\u691c\u7d22\n        User target(\"Bob\", 30, \"user\");\n        auto exact_match = std::find(users.begin(), users.end(), target);\n\n        \/\/ find_if\u306b\u3088\u308b\u6761\u4ef6\u4ed8\u304d\u691c\u7d22\n        auto admin = std::find_if(users.begin(), users.end(),\n            [](const User&amp; u) { return u.role == \"admin\"; });\n\n        \/\/ \u8907\u5408\u6761\u4ef6\u3067\u306e\u691c\u7d22\n        auto adult_admin = std::find_if(users.begin(), users.end(),\n            [](const User&amp; u) { \n                return u.age &gt;= 18 &amp;&amp; u.role == \"admin\"; \n            });\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">binary_search\u306a\u3069\u4ed6\u306e\u691c\u7d22\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u306e\u6bd4\u8f03<\/h3>\n\n\n\n<p>\u69d8\u3005\u306a\u691c\u7d22\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u7279\u5fb4\u3068\u9069\u7528\u30b7\u30fc\u30f3\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;algorithm&gt;\n#include &lt;set&gt;\n#include &lt;unordered_set&gt;\n#include &lt;chrono&gt;\n\nclass SearchAlgorithms {\npublic:\n    \/\/ 1. binary_search\u306e\u5b9f\u88c5\u4f8b\n    static void demonstrateBinarySearch() {\n        std::vector&lt;int&gt; sorted_numbers = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};\n\n        \/\/ \u5024\u306e\u5b58\u5728\u78ba\u8a8d\n        bool exists = std::binary_search(\n            sorted_numbers.begin(), sorted_numbers.end(), 5);\n\n        \/\/ \u5024\u306e\u4f4d\u7f6e\u3092\u53d6\u5f97\n        auto it = std::lower_bound(\n            sorted_numbers.begin(), sorted_numbers.end(), 5);\n\n        if (it != sorted_numbers.end() &amp;&amp; *it == 5) {\n            size_t position = std::distance(sorted_numbers.begin(), it);\n            std::cout &lt;&lt; \"\u4f4d\u7f6e: \" &lt;&lt; position &lt;&lt; std::endl;\n        }\n    }\n\n    \/\/ 2. set\/map\u3067\u306e\u691c\u7d22\u5b9f\u88c5\n    static void demonstrateSetSearch() {\n        std::set&lt;int&gt; number_set = {1, 2, 3, 4, 5};\n\n        \/\/ \u5bfe\u6570\u6642\u9593\u3067\u306e\u691c\u7d22\n        auto it = number_set.find(3);\n\n        \/\/ \u7bc4\u56f2\u691c\u7d22\u3082\u5bb9\u6613\n        auto lower = number_set.lower_bound(2);\n        auto upper = number_set.upper_bound(4);\n    }\n\n    \/\/ 3. unordered_set\/map\u3067\u306e\u691c\u7d22\u5b9f\u88c5\n    static void demonstrateHashSearch() {\n        std::unordered_set&lt;int&gt; number_hash = {1, 2, 3, 4, 5};\n\n        \/\/ \u5b9a\u6570\u6642\u9593\u3067\u306e\u691c\u7d22\n        auto it = number_hash.find(3);\n    }\n\n    \/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u7528\u30d9\u30f3\u30c1\u30de\u30fc\u30af\n    template&lt;typename Container&gt;\n    static void benchmarkSearch(const Container&amp; container,\n                              const typename Container::value_type&amp; value) {\n        auto start = std::chrono::high_resolution_clock::now();\n\n        \/\/ find\u30e1\u30bd\u30c3\u30c9\n        {\n            auto result = std::find(container.begin(), container.end(), value);\n            auto end = std::chrono::high_resolution_clock::now();\n            auto duration = std::chrono::duration_cast&lt;std::chrono::microseconds&gt;(end - start);\n            std::cout &lt;&lt; \"find: \" &lt;&lt; duration.count() &lt;&lt; \"\u03bcs\" &lt;&lt; std::endl;\n        }\n\n        \/\/ \u30b3\u30f3\u30c6\u30ca\u56fa\u6709\u306efind\u30e1\u30bd\u30c3\u30c9\uff08\u5b58\u5728\u3059\u308b\u5834\u5408\uff09\n        if constexpr (std::is_same_v&lt;Container, std::set&lt;typename Container::value_type&gt;&gt; ||\n                     std::is_same_v&lt;Container, std::unordered_set&lt;typename Container::value_type&gt;&gt;) {\n            start = std::chrono::high_resolution_clock::now();\n            auto result = container.find(value);\n            auto end = std::chrono::high_resolution_clock::now();\n            auto duration = std::chrono::duration_cast&lt;std::chrono::microseconds&gt;(end - start);\n            std::cout &lt;&lt; \"container.find: \" &lt;&lt; duration.count() &lt;&lt; \"\u03bcs\" &lt;&lt; std::endl;\n        }\n    }\n};<\/pre>\n\n\n\n<p>\u5404\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u7279\u5fb4\u6bd4\u8f03\uff1a<\/p>\n\n\n<div id=\"id-2fcdae9d-d976-4515-8070-536e5f5fec32\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/th><th>\u6642\u9593\u8a08\u7b97\u91cf<\/th><th>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/th><th>\u30bd\u30fc\u30c8\u306e\u8981\u5426<\/th><th>\u7279\u5fb4<\/th><\/tr><\/thead><tbody><tr><td>find<\/td><td>O(n)<\/td><td>O(1)<\/td><td>\u4e0d\u8981<\/td><td>\u6700\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u6c4e\u7528\u7684<\/td><\/tr><tr><td>find_if<\/td><td>O(n)<\/td><td>O(1)<\/td><td>\u4e0d\u8981<\/td><td>\u8907\u96d1\u306a\u6761\u4ef6\u306b\u5bfe\u5fdc\u53ef\u80fd<\/td><\/tr><tr><td>binary_search<\/td><td>O(log n)<\/td><td>O(1)<\/td><td>\u5fc5\u8981<\/td><td>\u30bd\u30fc\u30c8\u6e08\u307f\u30c7\u30fc\u30bf\u3067\u9ad8\u901f<\/td><\/tr><tr><td>set::find<\/td><td>O(log n)<\/td><td>O(n)<\/td><td>\u81ea\u52d5<\/td><td>\u5e38\u306b\u30bd\u30fc\u30c8\u72b6\u614b\u3092\u7dad\u6301<\/td><\/tr><tr><td>unordered_set::find<\/td><td>O(1)<\/td><td>O(n)<\/td><td>\u4e0d\u8981<\/td><td>\u6700\u3082\u9ad8\u901f\u3060\u304c\u30e1\u30e2\u30ea\u3092\u6d88\u8cbb<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u9078\u629e\u306e\u6307\u91dd\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>find\u3092\u9078\u3076\u5834\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c0f\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\uff08\u6570\u767e\u4ef6\u4ee5\u4e0b\uff09<\/li>\n\n\n\n<li>\u30b7\u30f3\u30d7\u30eb\u306a\u7b49\u4fa1\u6bd4\u8f03<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u5236\u7d04\u304c\u53b3\u3057\u3044\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>find_if\u3092\u9078\u3076\u5834\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u96d1\u306a\u691c\u7d22\u6761\u4ef6<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u90e8\u5206\u4e00\u81f4\u691c\u7d22<\/li>\n\n\n\n<li>\u52d5\u7684\u306a\u691c\u7d22\u6761\u4ef6<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>binary_search\u3092\u9078\u3076\u5834\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u304c\u65e2\u306b\u30bd\u30fc\u30c8\u6e08\u307f<\/li>\n\n\n\n<li>\u691c\u7d22\u56de\u6570\u304c\u591a\u3044<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u52b9\u7387\u91cd\u8996<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>set\/map\u3092\u9078\u3076\u5834\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8981\u7d20\u306e\u8ffd\u52a0\/\u524a\u9664\u304c\u983b\u7e41<\/li>\n\n\n\n<li>\u7bc4\u56f2\u691c\u7d22\u304c\u5fc5\u8981<\/li>\n\n\n\n<li>\u30bd\u30fc\u30c8\u9806\u3092\u7dad\u6301\u3057\u305f\u3044<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>unordered_set\/map\u3092\u9078\u3076\u5834\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6700\u9ad8\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5fc5\u8981<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u306b\u4f59\u88d5\u304c\u3042\u308b<\/li>\n\n\n\n<li>\u30cf\u30c3\u30b7\u30e5\u5316\u53ef\u80fd\u306a\u578b<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u9078\u629e\u57fa\u6e96\u3092\u8003\u616e\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8981\u4ef6\u306b\u6700\u9069\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\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\">\u5b9f\u52d9\u3067\u3088\u304f\u3042\u308b\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\u5b9f\u88c5\u30df\u30b9\u3068\u305d\u306e\u5bfe\u51e6\u6cd5<\/h3>\n\n\n\n<p>find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u3088\u304f\u906d\u9047\u3059\u308b\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u7b56\u3092\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;algorithm&gt;\n#include &lt;vector&gt;\n#include &lt;string&gt;\n\nclass TroubleshootingGuide {\npublic:\n    \/\/ \u554f\u984c1: \u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u7121\u52b9\u5316\n    static void demonstrateIteratorInvalidation() {\n        std::vector&lt;int&gt; numbers = {1, 2, 3, 4, 5};\n\n        \/\/ \u554f\u984c\u306e\u3042\u308b\u5b9f\u88c5\n        \/*\n        for (auto it = numbers.begin(); it != numbers.end(); ++it) {\n            if (*it == 3) {\n                numbers.push_back(6);  \/\/ \u30a4\u30c6\u30ec\u30fc\u30bf\u304c\u7121\u52b9\u5316\u3055\u308c\u308b\n            }\n        }\n        *\/\n\n        \/\/ \u6b63\u3057\u3044\u5b9f\u88c5\n        auto size = numbers.size();\n        for (size_t i = 0; i &lt; size; ++i) {\n            if (numbers[i] == 3) {\n                numbers.push_back(6);  \/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30d9\u30fc\u30b9\u306a\u306e\u3067\u5b89\u5168\n            }\n        }\n    }\n\n    \/\/ \u554f\u984c2: \u7bc4\u56f2\u5916\u30a2\u30af\u30bb\u30b9\n    static void demonstrateRangeChecking() {\n        std::vector&lt;int&gt; numbers = {1, 2, 3};\n\n        \/\/ \u554f\u984c\u306e\u3042\u308b\u5b9f\u88c5\n        \/*\n        auto it = std::find(numbers.begin(), numbers.end(), 4);\n        int value = *it;  \/\/ \u898b\u3064\u304b\u3089\u306a\u3044\u5834\u5408\u306bend()\u3092\u53c2\u7167\u3057\u3066\u3057\u307e\u3046\n        *\/\n\n        \/\/ \u6b63\u3057\u3044\u5b9f\u88c5\n        auto it = std::find(numbers.begin(), numbers.end(), 4);\n        if (it != numbers.end()) {\n            int value = *it;  \/\/ \u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\n        }\n    }\n\n    \/\/ \u554f\u984c3: \u30ab\u30b9\u30bf\u30e0\u578b\u3067\u306e\u6bd4\u8f03\u6f14\u7b97\u5b50\n    class CustomType {\n        int id;\n        std::string name;\n\n    public:\n        CustomType(int i, std::string n) : id(i), name(std::move(n)) {}\n\n        \/\/ \u4e0d\u5b8c\u5168\u306a\u5b9f\u88c5\n        \/*\n        bool operator==(const CustomType&amp; other) const {\n            return id == other.id;  \/\/ name\u304c\u8003\u616e\u3055\u308c\u3066\u3044\u306a\u3044\n        }\n        *\/\n\n        \/\/ \u6b63\u3057\u3044\u5b9f\u88c5\n        bool operator==(const CustomType&amp; other) const {\n            return id == other.id &amp;&amp; name == other.name;\n        }\n    };\n};\n\n\/\/ \u5b9f\u88c5\u30df\u30b9\u306e\u9632\u6b62\u7b56\u3068\u5bfe\u51e6\u65b9\u6cd5\nclass PreventiveMeasures {\npublic:\n    \/\/ 1. \u5b89\u5168\u306a\u30a4\u30c6\u30ec\u30fc\u30bf\u4f7f\u7528\n    template&lt;typename Container, typename T&gt;\n    static bool safeFind(Container&amp; container, const T&amp; value) {\n        auto it = std::find(container.begin(), container.end(), value);\n        return it != container.end();\n    }\n\n    \/\/ 2. \u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\u4ed8\u304d\u306e\u691c\u7d22\n    template&lt;typename Container, typename T&gt;\n    static std::optional&lt;typename Container::value_type&gt; \n    findWithBoundsCheck(const Container&amp; container, const T&amp; value) {\n        auto it = std::find(container.begin(), container.end(), value);\n        if (it != container.end()) {\n            return *it;\n        }\n        return std::nullopt;\n    }\n\n    \/\/ 3. \u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u691c\u7d22\n    template&lt;typename Container, typename T&gt;\n    static auto threadSafeFind(Container&amp; container, const T&amp; value) {\n        std::shared_lock&lt;std::shared_mutex&gt; lock(mutex);\n        return std::find(container.begin(), container.end(), value);\n    }\n\nprivate:\n    static std::shared_mutex mutex;\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u30c7\u30d0\u30c3\u30b0\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<p>find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u52b9\u679c\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<p>\u201c`cpp<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"i-21\">include<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"i-22\">include<\/h1>\n\n\n\n<p>class DebuggingGuide {<br>public:<br>\/\/ \u30c7\u30d0\u30c3\u30b0\u7528\u306e\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9<br>template<br>class DebugContainer {<br>Container&amp; container;<br>std::string name;<\/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=\"\">public:\n    DebugContainer(Container&amp; c, std::string n) \n        : container(c), name(std::move(n)) {}\n\n    template&lt;typename T&gt;\n    auto find(const T&amp; value) {\n        \/\/ 1. \u4e8b\u524d\u6761\u4ef6\u306e\u30c1\u30a7\u30c3\u30af\n        assert(!container.empty() &amp;&amp; \"Container is empty!\");\n\n        \/\/ 2. \u691c\u7d22\u51e6\u7406\u306e\u958b\u59cb\u3092\u30ed\u30b0\n        std::cout &lt;&lt; \"Starting search in \" &lt;&lt; name \n                  &lt;&lt; \" for value: \" &lt;&lt; value &lt;&lt; std::endl;\n\n        \/\/ 3. \u5b9f\u969b\u306e\u691c\u7d22\u51e6\u7406\n        auto start_time = std::chrono::high_resolution_clock::now();\n        auto result = std::find(container.begin(), container.end(), value);\n        auto end_time = std::chrono::high_resolution_clock::now();\n\n        \/\/ 4. \u7d50\u679c\u306e\u691c\u8a3c\u3068\u30ed\u30b0\n        auto duration = std::chrono::duration_cast&lt;std::chrono::microseconds&gt;\n                      (end_time - start_time);\n\n        std::cout &lt;&lt; \"Search completed in \" &lt;&lt; duration.count() \n                  &lt;&lt; \" microseconds\\n\";\n        std::cout &lt;&lt; \"Result: \" &lt;&lt; (result != container.end() ? \n                                  \"Found\" : \"Not found\") &lt;&lt; std::endl;\n\n        return result;\n    }\n};\n\n\/\/ \u30c7\u30d0\u30c3\u30b0\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u306e\u4f8b\nstatic void demonstrateDebugging() {\n    std::vector&lt;int&gt; numbers = {1, 2, 3, 4, 5};\n    DebugContainer debugNumbers(numbers, \"numbers\");\n\n    \/\/ \u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c81: \u57fa\u672c\u7684\u306a\u691c\u7d22\n    auto result1 = debugNumbers.find(3);\n\n    \/\/ \u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c82: \u5b58\u5728\u3057\u306a\u3044\u8981\u7d20\u306e\u691c\u7d22\n    auto result2 = debugNumbers.find(6);\n\n    \/\/ \u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c83: \u5883\u754c\u5024\u306e\u691c\u7d22\n    auto result3 = debugNumbers.find(1);  \/\/ \u5148\u982d\u8981\u7d20\n    auto result4 = debugNumbers.find(5);  \/\/ \u672b\u5c3e\u8981\u7d20\n}<\/pre>\n\n\n\n<p>};<\/p>\n\n\n\n<p>\/\/ \u30c7\u30d0\u30c3\u30b0\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff1a<br>\/*<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30c6\u30ca\u306e\u72b6\u614b\u78ba\u8a8d<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7a7a\u3067\u306a\u3044\u3053\u3068\u306e\u78ba\u8a8d<\/li>\n\n\n\n<li>\u8981\u7d20\u6570\u306e\u78ba\u8a8d<\/li>\n\n\n\n<li>\u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u6709\u52b9\u6027\u78ba\u8a8d<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u691c\u7d22\u6761\u4ef6\u306e\u78ba\u8a8d<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u691c\u7d22\u5024\u306e\u578b\u30c1\u30a7\u30c3\u30af<\/li>\n\n\n\n<li>\u5024\u306e\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af<\/li>\n\n\n\n<li>null\u30c1\u30a7\u30c3\u30af<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u76e3\u8996<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9f\u884c\u6642\u9593\u306e\u6e2c\u5b9a<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u78ba\u8a8d<\/li>\n\n\n\n<li>\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u56de\u6570\u306e\u78ba\u8a8d<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7d50\u679c\u306e\u691c\u8a3c<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u623b\u308a\u5024\u306e\u59a5\u5f53\u6027\u78ba\u8a8d<\/li>\n\n\n\n<li>\u526f\u4f5c\u7528\u306e\u30c1\u30a7\u30c3\u30af<\/li>\n\n\n\n<li>\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u306e\u78ba\u8a8d<br>*\/<\/li>\n<\/ul>\n\n\n\n<p>\/\/ \u3088\u304f\u3042\u308b\u30c8\u30e9\u30d6\u30eb\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<br>class TroubleshootingChecklist {<br>public:<br>template<br>static void performChecks(const Container&amp; container, const T&amp; value) {<br>\/\/ 1. \u57fa\u672c\u7684\u306a\u30c1\u30a7\u30c3\u30af<br>assert(!container.empty() &amp;&amp; \u201cContainer is empty\u201d);<\/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=\"\">    \/\/ 2. \u578b\u306e\u4e92\u63db\u6027\u30c1\u30a7\u30c3\u30af\n    static_assert(std::is_convertible_v&lt;\n        typename Container::value_type, T&gt; ||\n        std::is_convertible_v&lt;T, typename Container::value_type&gt;,\n        \"Incompatible types for comparison\");\n\n    \/\/ 3. \u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u6709\u52b9\u6027\u30c1\u30a7\u30c3\u30af\n    assert(container.begin() &lt;= container.end() &amp;&amp; \n           \"Iterator range is invalid\");\n\n    \/\/ 4. \u30e1\u30e2\u30ea\u6574\u5408\u6027\u30c1\u30a7\u30c3\u30af\n    assert(std::distance(container.begin(), container.<\/pre>\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-1859","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\/1859","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=1859"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1859\/revisions"}],"predecessor-version":[{"id":1860,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1859\/revisions\/1860"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1859"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}