{"id":670,"date":"2021-12-04T19:22:03","date_gmt":"2021-12-04T11:22:03","guid":{"rendered":"https:\/\/blog.cauchyschwarz.com\/?p=670"},"modified":"2021-12-19T02:17:10","modified_gmt":"2021-12-18T18:17:10","slug":"c%e6%8b%be%e9%81%97","status":"publish","type":"post","link":"https:\/\/blog.cauchyschwarz.com\/?p=670","title":{"rendered":"C++\u62fe\u9057"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69e5e60ad22b7\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69e5e60ad22b7\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E7%B1%BB\" >\u7c7b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E9%87%8D%E8%BD%BD\" >\u91cd\u8f7d<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E8%BF%90%E7%AE%97%E7%AC%A6%E9%87%8D%E8%BD%BD\" >\u8fd0\u7b97\u7b26\u91cd\u8f7d<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E5%BC%82%E5%B8%B8\" >\u5f02\u5e38<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E5%BC%BA%E5%88%B6%E7%B1%BB%E5%9E%8B%E8%BD%AC%E6%8D%A2%E6%93%8D%E4%BD%9C%E7%AC%A6\" >\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u64cd\u4f5c\u7b26<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#dynamic_cast\" >dynamic_cast<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#static_cast\" >static_cast<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#const_cast\" >const_cast<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#reinterpret_cast\" >reinterpret_cast<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E5%85%B6%E4%BB%96\" >\u5176\u4ed6<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA%E6%B5%81\" >\u8f93\u5165\u8f93\u51fa\u6d41<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#stringstream\" >stringstream<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA%E7%9A%84%E6%A0%BC%E5%BC%8F%E5%8C%96\" >\u8f93\u5165\u8f93\u51fa\u7684\u683c\u5f0f\u5316<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E6%A8%A1%E6%9D%BF\" >\u6a21\u677f<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E5%AE%9A%E4%B9%89%E7%B1%BB%E6%A8%A1%E6%9D%BF\" >\u5b9a\u4e49\u7c7b\u6a21\u677f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E5%8F%AF%E5%8F%98%E5%8F%82%E6%95%B0%E6%A8%A1%E6%9D%BF%E5%87%BD%E6%95%B0\" >\u53ef\u53d8\u53c2\u6570\u6a21\u677f\u51fd\u6570<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#1_%E9%80%9A%E8%BF%87%E9%80%92%E5%BD%92%E5%87%BD%E6%95%B0%E5%B1%95%E5%BC%80%EF%BC%9B\" >1. \u901a\u8fc7\u9012\u5f52\u51fd\u6570\u5c55\u5f00\uff1b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#2_%E9%80%9A%E8%BF%87%E9%80%97%E5%8F%B7%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%92%8C%E5%88%9D%E5%A7%8B%E5%8C%96%E5%88%97%E8%A1%A8%E6%96%B9%E5%BC%8F%E5%B1%95%E5%BC%80%E5%8F%82%E6%95%B0%E5%8C%85%EF%BC%9B\" >2. \u901a\u8fc7\u9017\u53f7\u8868\u8fbe\u5f0f\u548c\u521d\u59cb\u5316\u5217\u8868\u65b9\u5f0f\u5c55\u5f00\u53c2\u6570\u5305\uff1b<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#%E7%AE%97%E6%B3%95%E9%A2%98\" >\u7b97\u6cd5\u9898<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=670\/#Attending_Workshops\" >Attending Workshops<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1 class=\"wp-block-heading\" id=\"%E7%B1%BB\"><span class=\"ez-toc-section\" id=\"%E7%B1%BB\"><\/span>\u7c7b<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/stackoverflow.com\/questions\/14495536\/how-to-initialize-const-member-variable-in-a-class\">\u5982\u4f55\u521d\u59cb\u5316const\u6210\u5458\u53d8\u91cf?<\/a><br>\u5728\u521d\u59cb\u5316\u5217\u8868\u91cc\u521d\u59cb\u5316\uff0c\u6216\u8005\u76f4\u63a5\u5728\u7c7b\u7684\u751f\u547d\u91cc\u7528brace or equal initializer\u76f4\u63a5\u521d\u59cb\u5316(\u9700\u8981C++11)\u3002<\/li><\/ul>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"%E9%87%8D%E8%BD%BD\"><span class=\"ez-toc-section\" id=\"%E9%87%8D%E8%BD%BD\"><\/span>\u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%E8%BF%90%E7%AE%97%E7%AC%A6%E9%87%8D%E8%BD%BD\"><span class=\"ez-toc-section\" id=\"%E8%BF%90%E7%AE%97%E7%AC%A6%E9%87%8D%E8%BD%BD\"><\/span>\u8fd0\u7b97\u7b26\u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u8fd0\u7b97\u7b26\u91cd\u8f7d\u7684\u4e00\u8fb9\u5f62\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">type operator sign (parameters) { <em>\/*... body ...*\/<\/em> }<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"%E5%BC%82%E5%B8%B8\"><span class=\"ez-toc-section\" id=\"%E5%BC%82%E5%B8%B8\"><\/span>\u5f02\u5e38<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><a href=\"https:\/\/en.cppreference.com\/w\/cpp\/error\/exception\">https:\/\/en.cppreference.com\/w\/cpp\/error\/exception<\/a><\/p>\n\n\n\n<p>\u7c7b\u540d&nbsp;<code>std::exception<\/code><br>\u5934\u6587\u4ef6&nbsp;<code>&lt;exception&gt;<\/code><\/p>\n\n\n\n<p>\u91cd\u8981\u6210\u5458\u51fd\u6570\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">virtual const char* what() const throw(); \t<em>\/\/ until C++11<\/em>\nvirtual const char* what() const noexcept; \t<em>\/\/ since C++11<\/em>\n<\/code><\/pre>\n\n\n\n<p><code>throw<\/code>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><code>throw expression<\/code><br>\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\u3002\u4f46\u662f\u8fd9\u91cc\u629b\u51fa\u7684\u5bf9\u8c61\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b\uff0c\u4e0d\u9650\u4e8eexception\uff0c\u53ea\u8981catch\u7684\u65f6\u5019\u7c7b\u578b\u5339\u914d\u5373\u53ef\u3002<\/li><li><code>throw<\/code><br>\u518d\u6b21\u629b\u51fa\u5f53\u524d\u6355\u83b7\u7684\u5f02\u5e38<\/li><\/ul>\n\n\n\n<p>\u5e38\u7528pattern\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">try {\n} catch(...) {\n}\n\ntry {\n} catch(std::exception &amp;e) {\n}\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a<strong>throw<\/strong>\u5173\u952e\u5b57\u53ef\u4ee5\u629b\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u53ea\u8981<strong>catch<\/strong>\u8bed\u53e5\u4e2d\u80fd\u591f\u63a5\u4f4f\u8fd9\u4e2a\u5bf9\u8c61\u3002\u6bd4\u5982\u4f60\u751a\u81f3\u53ef\u4ee5<code>throw 0<\/code>\uff1a<a href=\"https:\/\/stackoverflow.com\/questions\/2628677\/what-does-throw-0-do-mean-is-it-bad\">https:\/\/stackoverflow.com\/questions\/2628677\/what-does-throw-0-do-mean-is-it-bad<\/a>&nbsp;\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%BC%BA%E5%88%B6%E7%B1%BB%E5%9E%8B%E8%BD%AC%E6%8D%A2%E6%93%8D%E4%BD%9C%E7%AC%A6\"><\/span>\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u64cd\u4f5c\u7b26<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><a href=\"https:\/\/blog.csdn.net\/bian_qing_quan11\/article\/details\/70788312\">https:\/\/blog.csdn.net\/bian_qing_quan11\/article\/details\/70788312<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"dynamic_cast\"><\/span>dynamic_cast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.cnblogs.com\/xiangtingshen\/p\/10851851.html\">https:\/\/www.cnblogs.com\/xiangtingshen\/p\/10851851.html<\/a><\/p>\n\n\n\n<p>\u7528\u4e8e\u5c06\u57fa\u7c7b\u6307\u9488\/\u5f15\u7528\u8f6c\u6362\u4e3a\u5b50\u7c7b\u6307\u9488\/\u5f15\u7528\uff0c\u5982\u679c\u53ef\u4ee5\u57fa\u7c7b\u6307\u9488\/\u5f15\u7528\u6307\u5411\u7684\u662f\u5bf9\u5e94\u7684\u5b50\u7c7b\u5bf9\u8c61\uff0c\u5219\u6b63\u5e38\u8fd4\u56de\u6307\u9488\uff0c\u5426\u5219\u8fd4\u56de\u7a7a\u6307\u9488\/\u629b\u51fa\u5f02\u5e38(\u56e0\u4e3a\u5f15\u7528\u6ca1\u6709\u7a7a\u503c)\u3002<\/p>\n\n\n\n<p>\u539f\u7406\uff1adynamic_cast\u4f7f\u7528RTTI\u6765\u68c0\u67e5\u6307\u9488\u6307\u5411\u7684\u5bf9\u8c61\u80fd\u5426\u5408\u6cd5\u8f6c\u6362\u6210\u6307\u5b9a\u7684\u7c7b\u578b\uff0c\u56e0\u6b64\u5982\u679c\u57fa\u7c7b\u6ca1\u6709\u865a\u51fd\u6570\uff0c\u90a3\u4e48\u6307\u5411\u7684\u5bf9\u8c61\u5c31\u6ca1\u6709\u865a\u8868\uff0cdynamic_cast\u5c31\u4f1a\u65e0\u6cd5\u5de5\u4f5c\uff0c\u5728\u7f16\u8bd1\u65f6\u5c31\u4f1a\u62a5\u9519\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"static_cast\"><\/span>static_cast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.cnblogs.com\/xiangtingshen\/p\/10851349.html\">https:\/\/www.cnblogs.com\/xiangtingshen\/p\/10851349.html<\/a><\/p>\n\n\n\n<p>\u5b8c\u6210\u7f16\u8bd1\u5668\u8ba4\u53ef\u7684\u9690\u5f0f\u8f6c\u6362\uff0c\u544a\u8bc9\u7f16\u8bd1\u5668\u8fd9\u4e9b\u8f6c\u6362\u662f\u81ea\u5df1\u60f3\u8981\u7684\uff0c\u4e0d\u7528\u62a5warning\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"const_cast\"><\/span>const_cast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.cnblogs.com\/ider\/archive\/2011\/07\/22\/cpp_cast_operator_part2.html\">https:\/\/www.cnblogs.com\/ider\/archive\/2011\/07\/22\/cpp_cast_operator_part2.html<\/a><\/p>\n\n\n\n<p>\u53bb\u9664\u53d8\u91cf\u7684cv\u9650\u5b9a\u7b26\uff0c\u7528\u4e8e\u5c06\u5e26const\u7684\u5bf9\u8c61\u53d8\u4e3a\u4e0d\u5e26const\u7684\u5bf9\u8c61\uff0c\u4ee5\u4f5c\u4e3a\u67d0\u4e9b\u51fd\u6570\u7684\u4e0d\u5e26const\u9650\u5b9a\u7b26\u7684\u53c2\u6570\uff0c\u800c\u4e0d\u662f\u4e3a\u4e86\u53bb\u4fee\u6539\u539f\u6765\u5c31\u662fconst\u7684\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"reinterpret_cast\"><\/span>reinterpret_cast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5f3a\u5236\u8f6c\u6362\uff0c\u7231\u548b\u548b\u5730\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%85%B6%E4%BB%96\"><\/span>\u5176\u4ed6<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><a href=\"https:\/\/stackoverflow.com\/questions\/53613641\/is-a-copy-on-return-operation-executed-prior-or-after-lock-guard-destructor\">return\u8bed\u53e5\u4e2d\u4e34\u65f6\u5bf9\u8c61\u7684\u751f\u6210\u65f6\u95f4\u5728\u5c40\u90e8\u53d8\u91cf\u7684\u6790\u6784\u51fd\u6570\u6267\u884c\u4e4b\u524d\u3002<\/a><\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA%E6%B5%81\"><span class=\"ez-toc-section\" id=\"%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA%E6%B5%81\"><\/span>\u8f93\u5165\u8f93\u51fa\u6d41<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>\u5ffd\u7565\u65e0\u6548\u8f93\u5165<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">cin.ignore(numeric_limits&lt;streamsize&gt;::max(), '\\n');\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"stringstream\"><span class=\"ez-toc-section\" id=\"stringstream\"><\/span><a href=\"https:\/\/www.hackerrank.com\/challenges\/c-tutorial-stringstream\/problem\">stringstream<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4f7f\u7528peek\u51fd\u6570\u548cignore\u51fd\u6570\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">stringstream ss(str);\nint a;\nvector&lt;int&gt; vec;\n\nwhile (ss &gt;&gt; a){\n    vec.push_back(a);\n\n    if (ss.peek() == ','){\n        ss.ignore();\n    }\n}\n\nreturn vec;\n<\/code><\/pre>\n\n\n\n<p>\u6216\u8005\u5224\u65ad\u6bcf\u6b21\u8bfb\u5165\u662f\u5426\u6210\u529f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">    stringstream ss(str);\n    int val;\n    char tmp;\n    vector&lt;int&gt; res;\n    ss &gt;&gt; val;\n    res.push_back(val);\n    while (ss &gt;&gt; tmp) {\n        ss &gt;&gt; val;\n        res.push_back(val);\n    }\n    return res;\n<\/code><\/pre>\n\n\n\n<p><a href=\"https:\/\/en.cppreference.com\/w\/cpp\/io\/basic_ios\/operator_bool\">\u8f93\u5165\u8f93\u51fa\u6d41\u6709\u91cd\u8f7dbool\u51fd\u6570\u4ee5\u8868\u793a\u5f53\u524d\u8f93\u5165\u8f93\u51fa\u6d41\u662f\u5426\u53d1\u751f\u9519\u8bef<\/a>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\"><em>\/\/ until c++11<\/em>\noperator void*() const;\n<em>\/\/ since c++11<\/em>\nexplicit operator bool() const;\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA%E7%9A%84%E6%A0%BC%E5%BC%8F%E5%8C%96\"><span class=\"ez-toc-section\" id=\"%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA%E7%9A%84%E6%A0%BC%E5%BC%8F%E5%8C%96\"><\/span>\u8f93\u5165\u8f93\u51fa\u7684\u683c\u5f0f\u5316<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u548c\u8f93\u5165\u8f93\u51fa\u683c\u5f0f\u5316\u76f8\u5173\u7684\u51fd\u6570\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><code>copyfmt<\/code><br><code>basic_ios&amp; copyfmt(const basic_ios&amp; other);<\/code><br>\u4ece\u53e6\u4e00\u4e2a\u8f93\u5165\u8f93\u51fa\u6d41\u590d\u5236\u9664rdstate\u3001exception mask\u3001rdbuf\u4e4b\u5916\u7684\u6240\u6709\u4e1c\u897f\uff1b<\/li><li><code>fill<\/code><br><code>CharT fill() const;<\/code><br>\u8fd4\u56de\u5f53\u524d\u4f7f\u7528\u7684fill character\uff1b<br><code>CharT fill( CharT ch );<\/code><br>\u66f4\u6539\u4f7f\u7528\u7684fill character\uff0c\u5e76\u8fd4\u56de\u4e4b\u524d\u4f7f\u7528\u7684fill character\uff1b<\/li><li><code>setfill <\/code><br><code>template&lt; class CharT > <em>\/*unspecified*\/<\/em> setfill( CharT c ); <\/code><br>\u7528\u5728<code>out &lt;&lt; ... &lt;&lt; setfill(c) &lt;&lt; ...<\/code>\u8fd9\u79cd\u573a\u666f\u7684\u65f6\u5019\u5c31\u7b49\u4ef7\u4e8e<code>out.fill(c)<\/code>\uff0c\u5373\u6539\u53d8\u6d41\u7684fill character\uff1b<\/li><li><code>flags<\/code><br><code>fmtflags flags() const;<\/code><br>\u8fd4\u56de\u5f53\u524d\u4f7f\u7528\u7684\u683c\u5f0f\u5316\u914d\u7f6e\uff1b<br><code>fmtflags flags(fmtflags flags);<\/code><br>\u66f4\u6539\u683c\u5f0f\u5316\u914d\u7f6e\uff1b<br>\u6709\u6548\u7684fmtflags\uff1a<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Constant<\/th><th>Explanation<\/th><\/tr><\/thead><tbody><tr><td>dec<\/td><td>\u8f93\u51fa\u6574\u6570\u65f6\u4f7f\u752810\u8fdb\u5236<\/td><\/tr><tr><td>oct<\/td><td>\u8f93\u51fa\u6574\u6570\u65f6\u4f7f\u75288\u8fdb\u5236<\/td><\/tr><tr><td>hex<\/td><td>\u8f93\u51fa\u6574\u6570\u65f6\u4f7f\u752816\u8fdb\u5236<\/td><\/tr><tr><td>basefield<\/td><td>`dec<\/td><\/tr><tr><td>left<\/td><td>\u8f93\u51fa\u65f6\u5de6\u5bf9\u9f50<\/td><\/tr><tr><td>right<\/td><td>\u8f93\u51fa\u65f6\u53f3\u5bf9\u9f50<\/td><\/tr><tr><td>internal<\/td><td>\u8f93\u51fa\u65f6\u628afill character\u586b\u4e2d\u95f4\uff0c\u800c\u4e0d\u662f\u5de6\u3001\u53f3\u5bf9\u9f50\u65f6\u586b\u5728\u53f3\u8fb9\u3001\u5de6\u8fb9<\/td><\/tr><tr><td>scientific<\/td><td>\u8f93\u51fa\u65f6\u4f7f\u7528\u79d1\u5b66\u8ba1\u6570\u6cd5\uff0c\u9ed8\u8ba4\u6709\u6548\u6570\u5b57\u91cc\u67096\u4f4d\u5c0f\u6570\uff1b\u5982\u679c\u8fd8\u6307\u5b9a\u4e86<code>fixed<\/code>\uff0c\u90a3\u4e48\u8f93\u51fa\u7684\u4f1a\u662f\u4e00\u4e2a<strong>hexfloat<\/strong>(\u5c45\u7136\u4ece\u6765\u6ca1\u542c\u8bf4\u8fc7\u8fd9\u79cd\u683c\u5f0f\u3002\u3002\u3002)<\/td><\/tr><tr><td>fixed<\/td><td>\u8f93\u51fa\u6d6e\u70b9\u6570\u65f6\u4f1a\u88650\u62106\u4f4d\u5c0f\u6570\uff1b\u5982\u679c\u8fd8\u6307\u5b9a\u4e86<code>fixed<\/code>\uff0c\u90a3\u4e48\u8f93\u51fa\u7684\u4f1a\u662f\u4e00\u4e2a<strong>hexfloat<\/strong><\/td><\/tr><tr><td>floatfield<\/td><td>`scientific<\/td><\/tr><tr><td>boolalpha<\/td><td>\u8bbe\u7f6e\u8f93\u51fa\u5e03\u5c14\u7c7b\u578b\u65f6\u662f\u8f93\u51fatrue\/false\u8fd8\u662f1\/0<\/td><\/tr><tr><td>showbase<\/td><td>\u8bbe\u7f6e\u8f93\u51fa\u6570\u5b57\u65f6\u662f\u4e0d\u662f\u8981\u52a0\u4e0a<code>0x<\/code>\u3001<code>0<\/code>\u8fd9\u79cd\u4e1c\u897f\u6765\u8868\u660e\u6570\u5b57\u7684\u8fdb\u5236<\/td><\/tr><tr><td>showpoint\/noshowpoint<\/td><td>\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e<code>noshowpoint<\/code>\u628a1.000\u8fd9\u79cd\u6d6e\u70b9\u6570\u663e\u793a\u62101<\/td><\/tr><tr><td>showpos<\/td><td>\u8bbe\u7f6e\u662f\u5426\u8981\u5728\u975e\u8d1f\u6570\u524d\u9762\u663e\u793a\u4e00\u4e2a<code>+<\/code>\u53f7<\/td><\/tr><tr><td>skipws<\/td><td>\u8bbe\u7f6e\u8bfb\u53d6\u8f93\u5165\u65f6\u662f\u5426\u8981\u8df3\u8fc7\u7a7a\u767d\u5b57\u7b26<\/td><\/tr><tr><td>unitbuf<\/td><td>\u8ba9\u6bcf\u4e2a\u8f93\u51fa\u90fd\u5b9e\u65f6flush\uff0c\u5426\u5219\u53ef\u80fd\u5c31\u4f1a\u7b49\u5230\u8f93\u51fa\u6362\u884c\u8fd9\u79cd\u64cd\u4f5c\u65f6\u624d\u4f1aflush\u663e\u793a\u8f93\u51fa<\/td><\/tr><tr><td>uppercase<\/td><td>\u8f93\u51fa\u5b57\u7b26\u65f6\u66f4\u6362\u4e3a\u5927\u5199\u5b57\u7b26<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\"><li><code>setf<\/code><br><code>fmtflags setf( fmtflags flags );<\/code><br>\u8bbe\u7f6e\u683c\u5f0f\u5316\u7684flag\uff0c\u7b49\u4ef7\u4e8e<code>fl = fl | flags<\/code>\uff1b<br><code>fmtflags setf( fmtflags flags, fmtflags mask );<\/code><br>\u8bbe\u7f6e\u6307\u5b9a\u4f4d\u4e0a\u7684flag\uff0c\u7b49\u4ef7\u4e8e<code>fl = (fl &amp; ~mask) | (flags &amp; mask)<\/code>\uff1b<\/li><li><code>unsetf<\/code><br><code>void unsetf( fmtflags flags );<\/code><br>\u6e05\u9664\u683c\u5f0f\u5316\u7684flag\uff1b<\/li><li><code>precision<\/code><br><code>streamsize precision() const;<\/code><br>\u83b7\u53d6\u5f53\u524d\u4f1a\u4e3a\u6d6e\u70b9\u6570\u8f93\u51fa\u591a\u5c11\u4f4d\u5c0f\u6570\uff1b<br><code>streamsize precision( streamsize new_precision );<\/code><br>\u8bbe\u7f6e\u4e3a\u6d6e\u70b9\u6570\u8f93\u51fa\u591a\u5c11\u4f4d\u5c0f\u6570\uff1b<\/li><li><code>setprecision<\/code><br><code>\/*unspecified*\/ setprecision( int n );<\/code><\/li><li><code>width<\/code><br><code>streamsize width() const;<\/code><br><code>streamsize width( streamsize new_width );<\/code><br>\u8bbe\u7f6e\u8f93\u51fa\u6574\u6570\u6216\u8005\u6d6e\u70b9\u6570\u65f6\u7684\u6700\u5c0f\u5bbd\u5ea6\uff0c\u8f93\u5165\u65f6\u7684\u6700\u5927\u5bbd\u5ea6\u3002\u4e0d\u591f\u7684\u7528fill character\u8865\u3002<\/li><li><code>resetiosflags<\/code><br><code>\/*unspecified*\/ resetiosflags( std::ios_base::fmtflags mask );<\/code><\/li><li><code>setiosflags<\/code><br><code>\/*unspecified*\/ setiosflags( std::ios_base::fmtflags mask );<\/code><\/li><\/ul>\n\n\n\n<p>\u4e0a\u9762\u8fd9\u4e9b\u8bbe\u7f6e\u683c\u5f0f\u5316\u7684\u51fd\u6570\u3001\u53c2\u6570\u5f88\u591a\u4e5f\u662f\u9002\u7528\u4e8e\u8f93\u5165\u7684\uff0c\u65b9\u4fbf\u683c\u5f0f\u5316\u8f93\u5165\u3002<br>\u4f7f\u7528\u65f6\u53ef\u4ee5\u4f7f\u7528<code>cout &lt;&lt; showbase &lt;&lt; scientific &lt;&lt; ...<\/code>\u8fd9\u79cd\u65b9\u5f0f\u6765\u8bbe\u7f6e\u683c\u5f0f\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528<code>cout.setf(...)<\/code>\u8fd9\u79cd\u6765\u8bbe\u7f6e\uff0c\u4e0d\u8fc7\u663e\u7136\u524d\u9762\u90a3\u79cd\u66f4\u7b80\u5355\u7b80\u6d01\uff1b<\/p>\n\n\n\n<p><a href=\"https:\/\/www.hackerrank.com\/challenges\/prettyprint\/problem\">Hackerrank\u4e0a\u9762\u7684\u4e00\u9053\u4e60\u9898<\/a>\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A8%A1%E6%9D%BF\"><\/span>\u6a21\u677f<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>\u9996\u5148\uff0c\u8bfb\u4e00\u4e0b\u6211\u6700\u559c\u6b22\u7684cppreference\u8fd9\u4e2a\u7f51\u7ad9\u4e0a\u7684<a href=\"https:\/\/en.cppreference.com\/w\/cpp\/language\/class_template\">\u5173\u4e8e\u7c7b\u6a21\u677f\u7684\u6743\u5a01\u4ecb\u7ecd<\/a>\uff0c\u4e0b\u9762\u7684\u5185\u5bb9\u57fa\u672c\u4e0a\u662f\u4ee5cppreference\u7684\u4ecb\u7ecd\u4e3a\u4e3b\uff0c\u81ea\u5df1\u7ffb\u8bd1\u4e00\u90e8\u5206\uff0c\u7136\u540e\u6dfb\u52a0\u4e86\u4e00\u4e9b\u81ea\u5df1\u89c9\u5f97\u91cd\u8981\u7684\u4e1c\u897f\u3002\u5176\u6b21\u8bfb\u4e00\u4e0bC++ Primer\u4e00\u4e66\u7b2c16\u7ae0\u5173\u4e8e\u6a21\u677f\u548c\u8303\u578b\u7f16\u7a0b\u7684\u4ecb\u7ecd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%E5%AE%9A%E4%B9%89%E7%B1%BB%E6%A8%A1%E6%9D%BF\"><span class=\"ez-toc-section\" id=\"%E5%AE%9A%E4%B9%89%E7%B1%BB%E6%A8%A1%E6%9D%BF\"><\/span>\u5b9a\u4e49\u7c7b\u6a21\u677f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">template &lt;parameter-list&gt; class-declaration\t(1)\nexport template &lt;parameter-list&gt; class-declaration (2) (until c++11)\n<\/code><\/pre>\n\n\n\n<p>\u53ea\u770b\u7b2c\u4e00\u79cd\u5b9a\u4e49\u65b9\u5f0f\uff0c\u7b2c\u4e8c\u79cd\u51e0\u4e4e\u6ca1\u89c1\u4eba\u7528\u8fc7\uff0c\u770b\u8fd9\u4e2a<em>until c++11<\/em>\u7684\u6807\u6ce8\uff0c\u4ee5\u540e\u5e94\u8be5\u662f\u8981\u88ab\u5e9f\u5f03\u7684\u3002<\/p>\n\n\n\n<p><em>class-declaration<\/em>\u8868\u793a\u8981\u5b9a\u4e49\u7684\u7c7b\u6a21\u677f\u7684\u540d\u5b57\uff1b<em>parameter-list<\/em>\u5219\u662f\u4e00\u4e2a\u975e\u7a7a\u7684\u3001\u9017\u53f7\u5206\u9694\u7684\u6a21\u677f\u53c2\u6570\u5217\u8868\uff0c\u6a21\u677f\u53c2\u6570\u53ef\u4ee5\u662f<em>\u975e\u7c7b\u578b\u53c2\u6570(non-type parameter)<\/em>\uff0c<em>\u7c7b\u578b\u53c2\u6570(type parameter)<\/em>\uff0c<em>\u6a21\u677f\u53c2\u6570(template parameter)\u6216\u8005parameter pack<\/em>\u3002\u8fd9\u51e0\u4e2a\u672f\u8bed\u9700\u8981\u89e3\u91ca\u4e00\u4e0b\uff1a<\/p>\n\n\n\n<p><em>\u7c7b\u578b\u53c2\u6570(type parameter)<\/em>\uff0c\u8fd9\u4e2a\u662f\u6700\u5bb9\u6613\u88ab\u7406\u89e3\u7684\uff0c\u5c31\u662f\u7528\u4e00\u4e2a\u7c7b\u6765\u4f5c\u4e3a\u8fd9\u4e2a\u7c7b\u6a21\u677f\u7684\u53c2\u6570\u3002\u6bd4\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">template &lt;class T&gt;\nclass My_vector { <em>\/* ... *\/<\/em> };\n<\/code><\/pre>\n\n\n\n<p>\u6216\u8005<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">template &lt;class T = void&gt;\nstruct My_op_functor { <em>\/* ... *\/<\/em> };\n<\/code><\/pre>\n\n\n\n<p><em>\u975e\u7c7b\u578b\u53c2\u6570(non-type parameter)<\/em>\uff0c\u7b80\u5355\u70b9\u8bf4\u5c31\u662f\u50cf\u666e\u901a\u51fd\u6570\u90a3\u6837\u63a5\u53d7\u6307\u5b9a\u7c7b\u578b\u7684\u201c\u503c\u201d\u4f5c\u4e3a\u8fd9\u4e2a\u7c7b\u6a21\u677f\u7684\u53c2\u6570\u3002\u6bd4\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<p>template parameter<\/p>\n\n\n\n<p>parameter pack<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%E5%8F%AF%E5%8F%98%E5%8F%82%E6%95%B0%E6%A8%A1%E6%9D%BF%E5%87%BD%E6%95%B0\"><span class=\"ez-toc-section\" id=\"%E5%8F%AF%E5%8F%98%E5%8F%82%E6%95%B0%E6%A8%A1%E6%9D%BF%E5%87%BD%E6%95%B0\"><\/span>\u53ef\u53d8\u53c2\u6570\u6a21\u677f\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u9898\u76ee\uff1a<a href=\"https:\/\/www.hackerrank.com\/challenges\/cpp-variadics\/problem\">https:\/\/www.hackerrank.com\/challenges\/cpp-variadics\/problem<\/a><\/p>\n\n\n\n<p>\u5bf9\u4e8e\u53ef\u53d8\u53c2\u6570\u6a21\u677f\u51fd\u6570\uff0c\u5c55\u5f00\u7684\u65b9\u6cd5\u67092\u79cd\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-%E9%80%9A%E8%BF%87%E9%80%92%E5%BD%92%E5%87%BD%E6%95%B0%E5%B1%95%E5%BC%80\"><span class=\"ez-toc-section\" id=\"1_%E9%80%9A%E8%BF%87%E9%80%92%E5%BD%92%E5%87%BD%E6%95%B0%E5%B1%95%E5%BC%80%EF%BC%9B\"><\/span>1. \u901a\u8fc7\u9012\u5f52\u51fd\u6570\u5c55\u5f00\uff1b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u901a\u8fc7\u9012\u5f52\u5c55\u5f00\u4e5f\u6709\u4e24\u79cd\u65b9\u5f0f\uff0c\u4e00\u4e2a\u662f\u901a\u8fc7\u666e\u901a\u7684\u9012\u5f52\u51fd\u6570\uff0c\u6bcf\u6b21\u53d6\u4e00\u4e2a\u53c2\u6570\uff0c\u53c2\u6570\u5305\u5728\u4e0d\u65ad\u5730\u53d8\u5c0f\uff0c\u53e6\u4e00\u4e2a\u662f\u901a\u8fc7tuple\uff0c\u7d22\u5f15\u5728\u4e0d\u65ad\u5730\u53d8\u5316\uff0c\u901a\u8fc7\u7d22\u5f15\u53d6\u904d\u6bcf\u4e00\u4e2a\u53c2\u6570\u3002\u901a\u8fc7tuple\u5c55\u5f00\u65f6\uff0c\u9700\u8981\u4f7f\u7528<code>enable_if<\/code>(\u53c2\u8003https:\/\/blog.csdn.net\/jeffasd\/article\/details\/84667090#t2\u548chttps:\/\/en.cppreference.com\/w\/cpp\/types\/enable_if)\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">#include &lt;tuple&gt;\n\n<em>\/\/ Enter your code for reversed_binary_value&lt;bool...&gt;()<\/em>\ntemplate&lt;std::size_t I = 0, typename Tuple&gt;\ntypename std::enable_if&lt;I == std::tuple_size&lt;Tuple&gt;::value, int&gt;::type impl(Tuple t) {\n    return 0;\n}\n\ntemplate&lt;std::size_t I = 0, typename Tuple&gt;\ntypename  std::enable_if&lt;I &lt; std::tuple_size&lt;Tuple&gt;::value, int&gt;::type impl(Tuple t) {\n    return std::get&lt;I&gt;(t) + 2 * impl&lt;I + 1&gt;(t);\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-%E9%80%9A%E8%BF%87%E9%80%97%E5%8F%B7%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%92%8C%E5%88%9D%E5%A7%8B%E5%8C%96%E5%88%97%E8%A1%A8%E6%96%B9%E5%BC%8F%E5%B1%95%E5%BC%80%E5%8F%82%E6%95%B0%E5%8C%85\"><span class=\"ez-toc-section\" id=\"2_%E9%80%9A%E8%BF%87%E9%80%97%E5%8F%B7%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%92%8C%E5%88%9D%E5%A7%8B%E5%8C%96%E5%88%97%E8%A1%A8%E6%96%B9%E5%BC%8F%E5%B1%95%E5%BC%80%E5%8F%82%E6%95%B0%E5%8C%85%EF%BC%9B\"><\/span>2. \u901a\u8fc7\u9017\u53f7\u8868\u8fbe\u5f0f\u548c\u521d\u59cb\u5316\u5217\u8868\u65b9\u5f0f\u5c55\u5f00\u53c2\u6570\u5305\uff1b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u8fd9\u91cc\u8981\u7528\u5230\u4e00\u4e2ac++11\u4e2d\u7684\u8bed\u6cd5\uff0c\u53eb\u53c2\u6570\u5305\u5c55\u5f00(parameter pack expansion)\uff0c\u8be6\u89c1https:\/\/en.cppreference.com\/w\/cpp\/language\/parameter_pack\u4e2d\u5217\u51fa\u6765\u7684\u7b2c5\u79cd\u60c5\u51b5\uff0c\u5c31\u662f\u8bf4<code>pattern...<\/code>\u8fd9\u79cd\u5199\u6cd5\uff0c\u4f1a\u628a\u8fd9\u4e2a<em>pattern<\/em>\u5e94\u7528\u5230\u53c2\u6570\u5305\u4e2d\u7684\u6bcf\u4e00\u4e2a\u53c2\u6570\uff0c\u7136\u540e\u7528\u9017\u53f7\u8fde\u63a5\u8d77\u6765\u3002\u53c2\u8003cppreference\u4e2d\u5217\u51fa\u6765\u7684\u4f8b\u5b50\uff0c\u89c2\u5bdf\u8fd9\u4e2apattern\u662f\u5982\u4f55\u5c55\u5f00\u7684\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">template&lt;class ...Us&gt; void f(Us... pargs) {}\ntemplate&lt;class ...Ts&gt; void g(Ts... args) {\n    f(&amp;args...); <em>\/\/ \u201c&amp;args...\u201d is a pack expansion<\/em>\n                 <em>\/\/ \u201c&amp;args\u201d is its pattern<\/em>\n}\ng(1, 0.2, \"a\"); <em>\/\/ Ts... args expand to int E1, double E2, const char* E3<\/em>\n                <em>\/\/ &amp;args... expands to &amp;E1, &amp;E2, &amp;E3<\/em>\n                <em>\/\/ Us... pargs expand to int* E1, double* E2, const char** E3<\/em>\n<\/code><\/pre>\n\n\n\n<p>\u7531\u4e8e\u65f6\u95f4\u5173\u7cfb\u6765\u4e0d\u53ca\u8be6\u7ec6\u5199\uff0c\u5177\u4f53\u89c1\u300a\u6df1\u5165\u5e94\u7528C++11 \u4ee3\u7801\u4f18\u5316\u4e0e\u5de5\u7a0b\u7ea7\u5e94\u7528\u300b\u8fd9\u672c\u4e66\u7b2c3\u7ae0\u7b2c2\u8282\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"%E7%AE%97%E6%B3%95%E9%A2%98\"><span class=\"ez-toc-section\" id=\"%E7%AE%97%E6%B3%95%E9%A2%98\"><\/span>\u7b97\u6cd5\u9898<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"attending-workshops\"><span class=\"ez-toc-section\" id=\"Attending_Workshops\"><\/span><a href=\"https:\/\/www.hackerrank.com\/challenges\/attending-workshops\/problem\">Attending Workshops<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5982\u8ba8\u8bba\u533a\u6240\u8bf4\uff0c\u8fd9\u662f\u4e00\u4e2ainterval scheduling\u7684\u95ee\u9898\u3002\u91c7\u7528\u8d2a\u5fc3\u7b97\u6cd5\uff0c\u628a\u6240\u6709\u4efb\u52a1\u533a\u95f4\u6309\u7167\u7ed3\u675f\u65f6\u95f4\u6392\u5e8f\uff0c\u7136\u540e\u4ece\u7b2c\u4e00\u4e2a\u533a\u95f4\u5f00\u59cb\u8d2a\u5fc3\u5730\u9009\u53d6\u4e0d\u76f8\u4ea4\u7684\u533a\u95f4\u5373\u53ef\u3002\u5177\u4f53\u7b97\u6cd5\u53ef\u4ee5\u53c2\u770b<a href=\"https:\/\/en.wikipedia.org\/wiki\/Interval_scheduling\">wikipedia<\/a>\u4e0a<strong>Greedy polynomial solution<\/strong>\u4e00\u6bb5\u3002<\/li><li>\u53ef\u601c\u81ea\u5df1\u5199\u4e86\u4e00\u4e2a\u52a8\u6001\u89c4\u5212\uff0c\u6309\u7167\u7ed3\u675f\u65f6\u95f4\u6765\u8fdb\u884c\u9012\u63a8\u3002<\/li><li>\u5173\u4e8e\u8be5\u95ee\u9898\u7684\u53d8\u79cdGISDP\u3001GISMP\u3002<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u7c7b \u5982\u4f55\u521d\u59cb\u5316const\u6210\u5458\u53d8\u91cf?\u5728\u521d\u59cb\u5316\u5217\u8868\u91cc\u521d\u59cb\u5316\uff0c\u6216\u8005\u76f4\u63a5\u5728\u7c7b\u7684\u751f\u547d\u91cc\u7528brace or equal initializer\u76f4\u63a5\u521d\u59cb\u5316(\u9700\u8981C++11)\u3002 \u91cd\u8f7d \u8fd0\u7b97\u7b26\u91cd\u8f7d \u8fd0\u7b97\u7b26\u91cd\u8f7d\u7684\u4e00\u8fb9\u5f62\u5f0f&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[8],"class_list":["post-670","post","type-post","status-publish","format-standard","hentry","category-10","tag-c"],"_links":{"self":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=670"}],"version-history":[{"count":6,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/670\/revisions"}],"predecessor-version":[{"id":936,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/670\/revisions\/936"}],"wp:attachment":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}