{"id":438,"date":"2020-06-29T09:19:55","date_gmt":"2020-06-29T01:19:55","guid":{"rendered":"http:\/\/www.wangkaixuan.tech\/?p=438"},"modified":"2020-06-29T09:23:25","modified_gmt":"2020-06-29T01:23:25","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88stdlist%e6%80%a7%e8%83%bd%e8%bf%99%e4%b9%88%e5%b7%ae%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/www.wangkaixuan.tech\/?p=438","title":{"rendered":"\u4e3a\u4ec0\u4e48std::list\u6027\u80fd\u8fd9\u4e48\u5dee\uff1f"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">1.\u73b0\u8c61<\/h2>\n\n\n\n<p><strong>\u73b0\u8c611<\/strong>\uff1a\u6700\u8fd1\u5728\u5199\u4e00\u4e2a\u65b0\u7cfb\u7edf\uff0c\u65b9\u5f0f\u662f\u5f00\u53d1\u4e00\u4e2a\u52a8\u6001\u5e93\uff0c\u5d4c\u5165\u67d0\u4e2a\u4e3b\u7a0b\u5e8f\u4e2d\u8fd0\u884c\uff0c\u4e3b\u7a0b\u5e8f\u8c03\u7528\u6211\u5b9e\u73b0\u7684\u63a5\u53e3\u5b8c\u6210\u67d0\u4e9b\u529f\u80fd\u3002\u672a\u5d4c\u5165\u52a8\u6001\u5e93\u65f6\uff0c\u4e3b\u7a0b\u5e8f\u7684TPS\u53ef\u4ee5\u8fbe\u523010\u4e07\uff0c\u5d4c\u5165\u52a8\u6001\u5e93\u540e\uff0c\u4e00\u5f00\u59cbTPS\u5f88\u9ad8\uff0c\u4f46\u5f88\u5feb\u5c31\u964d\u5230\u4e864000\u5de6\u53f3\u3002\u540e\u6765\u6211\u53d1\u73b0\u662f\u52a8\u6001\u5e93\u4e2d\u7528\u4e86\u4e00\u4e2alist\uff0c\u800c\u8fd9\u4e2alist\u7684\u5185\u5bb9\u6ca1\u6709\u53ca\u65f6\u6e05\u7a7a\u5bfc\u81f4\u7684\u3002<\/p>\n\n\n\n<p>\u8ba9\u6211\u7591\u60d1\u7684\u6709\u4e24\u70b9\uff1a1\uff09\u6211\u5176\u5b9e\u5e76\u6ca1\u6709\u5bf9list\u505a\u663e\u5f0f\u7684\u904d\u5386\u64cd\u4f5c\uff0c\u6309\u8bf4list\u7684\u957f\u5ea6\u4e0d\u5e94\u8be5\u5f71\u54cd\u7a0b\u5e8f\u6027\u80fd\u7684\uff1b2\uff09list\u7684\u957f\u5ea6\u53ea\u6709\u533a\u533a4000\u591a\uff0c\u800c\u5f53\u65f6\u6027\u80fd\u5df2\u7ecf\u4e0b\u964d\u5f97\u4e0d\u6210\u6837\u5b50\u4e86\u3002<\/p>\n\n\n\n<p><strong>\u73b0\u8c612<\/strong>\uff1a\u5176\u4ed6\u9879\u76ee\u7684\u540c\u4e8b\u4e5f\u8868\u793alist\u6709\u6027\u80fd\u95ee\u9898\uff0c\u4f46\u6ca1\u6709\u63d0\u4f9b\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u53d7\u597d\u5947\u5fc3\u9a71\u4f7f\uff0c\u6211\u51b3\u5b9a\u4e00\u63a2\u7a76\u7adf\u3002<\/p>\n\n\n\n<p>\u5148\u58f0\u660e\uff1a\u7531\u4e8e\u65f6\u95f4\u9650\u5236\uff0c\u6211\u8fd9\u91cc\u5e76\u6ca1\u6709\u4e13\u95e8\u5199\u6d4b\u8bd5\u7a0b\u5e8f\u8fdb\u884c\u8be6\u7ec6\u6d4b\u8bd5\uff0c\u6d4b\u8bd5\u7ed3\u679c\u90fd\u662f\u57fa\u4e8e\u6211\u5728\u505a\u7684\u5177\u4f53\u9879\u76ee\u7684\u5177\u4f53\u60c5\u51b5\u7b80\u5355\u6d4b\u8bd5\u7684\uff0c\u4ec5\u8bf4\u660e\u5728\u8fd9\u79cd\u7279\u5b9a\u7684\u573a\u666f\u4e0b\u6709\u8fd9\u6837\u7684\u7279\u5b9a\u95ee\u9898\uff0c\u4ee5\u540e\u6709\u65f6\u95f4\u4f1a\u505a\u8be6\u7ec6\u7684\u8865\u5145\u6d4b\u8bd5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2.\u539f\u56e0<\/h2>\n\n\n\n<p>std::list\u7684size\u65b9\u6cd5\uff0c\u5728\u67d0\u4e9b\u5e73\u53f0\u4e0b\u662f\u7528\u904d\u5386\u5b9e\u73b0\u7684\uff08\u800c\u6211\u6070\u5de7\u7528\u4e86\u5927\u91cf\u7684size()!=0\u6765\u5224\u65adlist\u662f\u5426\u4e3a\u7a7a\uff0c\u6362\u6210empty()\u51fd\u6570\u4f1a\u597d\u5f88\u591a\uff09<\/p>\n\n\n\n<p>\u9996\u5148\u83b7\u53d6g++\u7684stl\u6e90\u4ee3\u7801\uff0c\u4f4d\u4e8e\uff1a<a href=\"https:\/\/github.com\/gcc-mirror\/gcc\">https:\/\/github.com\/gcc-mirror\/gcc<\/a>\uff0c<strong>libstdc++-v3<\/strong>\u76ee\u5f55<\/p>\n\n\n\n<p>list\u7684size()\u51fd\u6570\u5b9e\u73b0\u4f4d\u4e8e\uff1ainclude\/bits\/stl_list.h<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"672\" height=\"243\" src=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/1-4.png\" alt=\"\" class=\"wp-image-442\" srcset=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/1-4.png 672w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/1-4-300x108.png 300w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/1-4-604x218.png 604w\" sizes=\"auto, (max-width: 672px) 100vw, 672px\" \/><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0csize()\u51fd\u6570\u5e95\u5c42\u8c03\u7528\u7684\u662fstd::distance()\u51fd\u6570\uff0c\u800cempty()\u51fd\u6570\u5219\u662f\u76f4\u63a5\u901a\u8fc7\u6307\u9488\u5224\u65ad\u91cc\u94fe\u8868\u662f\u5426\u4e3a\u7a7a\u3002<\/p>\n\n\n\n<p>std::distance()\u7684\u5b9e\u73b0\u4f4d\u4e8einclude\/bits\/stl_iterator_base_funcs.h:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"325\" src=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image.png\" alt=\"\" class=\"wp-image-443\" srcset=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image.png 683w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-300x143.png 300w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-567x270.png 567w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><\/figure>\n\n\n\n<p>\u8be5\u51fd\u6570\u5728\u5e95\u5c42\u8c03\u7528\u4e86__distance\u51fd\u6570\uff0c\u800c\u8fd9\u4e2a\u51fd\u6570\u6709\u4e24\u4e2a\u5b9e\u73b0\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"732\" height=\"515\" src=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-1.png\" alt=\"\" class=\"wp-image-444\" srcset=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-1.png 732w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-1-300x211.png 300w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-1-384x270.png 384w\" sizes=\"auto, (max-width: 732px) 100vw, 732px\" \/><\/figure>\n\n\n\n<p>\u5bf9\u4e8e\u968f\u673a\u8bfb\u53d6\u7684\u5bb9\u5668(\u4ee5random_access_iterator_tag\u6807\u8bc6)\uff0c\u8c03\u7528\u7684\u662f\u4e0b\u9762\u7684\u51fd\u6570\uff0c\u76f4\u63a5\u9996\u5c3e\u76f8\u51cf\u5373\u53ef\uff1b\u5bf9\u4e8e\u975e\u968f\u673a\u8bfb\u53d6\u5bb9\u5668(\u4ee5input_iterator_tag\u6807\u8bc6)\uff0c<strong>\u9700\u8981\u904d\u5386<\/strong>\uff01<\/p>\n\n\n\n<p>\u8fd9\u51e0\u4e2aiterator_tag\u7684\u5b9a\u4e49\u4f4d\u4e8einclude\/bits\/stl_iterator_base_types.h\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"816\" height=\"375\" src=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-2.png\" alt=\"\" class=\"wp-image-445\" srcset=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-2.png 816w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-2-300x138.png 300w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-2-768x353.png 768w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-2-588x270.png 588w\" sizes=\"auto, (max-width: 816px) 100vw, 816px\" \/><\/figure>\n\n\n\n<p>\u8fd9\u51e0\u79cditerator\u4ee3\u8868\u7684\u542b\u4e49\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>input\uff1a\u53ea\u8bfb\u8fed\u4ee3\u5668<\/li><li>output\uff1a\u53ea\u5199\u8fed\u4ee3\u5668<\/li><li>forward\uff1a\u8bfb\u5199\u8fed\u4ee3\u5668<\/li><li>bidirectional\uff1a\u53cc\u5411\u79fb\u52a8\u8fed\u4ee3\u5668<\/li><li>random\uff1a\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668<\/li><\/ul>\n\n\n\n<p>\u8fd9\u91cc\u7528\u4e86\u4e00\u4e2a\u5de7\u5999\u7684\u7f16\u7801\u6280\u5de7\uff0c\u7528struct\u7684\u7ee7\u627f\u7ed3\u6784\u6765\u8868\u73b0\u7c7b\u578b\u4ece\u5c5e\u5173\u7cfb\uff0c\u4e0a\u9762\u7684\u7ee7\u627f\u7ed3\u679c\u8868\u793a\u7684\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>random_access_iterator\u4f7f\u7528\u4e0a\u8ff0\u7684\u7b2c\u4e8c\u4e2a__distance\u5b9e\u73b0\uff0c\u5373\u9996\u5c3e\u76f8\u51cf\u5feb\u901f\u8ba1\u7b97\u5143\u7d20\u4e2a\u6570<\/li><li>\u5176\u4ed6\u7684bidirectional\u3001forward\u3001input\u90fd\u4f1a\u4f7f\u7528\u7b2c\u4e00\u4e2a__distance\u5b9e\u73b0\uff0c\u5373\u9700\u904d\u5386\u624d\u80fd\u8ba1\u7b97\u5143\u7d20\u4e2a\u6570<\/li><\/ul>\n\n\n\n<p>\u4e00\u4e9b\u5e38\u7528\u7684\u5217\u8868\u5bb9\u5668\u91cd\uff0cvector\u63d0\u4f9b\u7684\u662frandom_access_iterator\uff0c\u652f\u6301\u968f\u673a\u8bbf\u95ee:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"639\" height=\"216\" src=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-3.png\" alt=\"\" class=\"wp-image-446\" srcset=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-3.png 639w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-3-300x101.png 300w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-3-604x204.png 604w\" sizes=\"auto, (max-width: 639px) 100vw, 639px\" \/><\/figure>\n\n\n\n<p>\u800clist\u63d0\u4f9b\u7684\u662fbidirectional_iterator\uff0c\u652f\u6301\u53cc\u5411\u8bbf\u95ee\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"610\" height=\"262\" src=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-4.png\" alt=\"\" class=\"wp-image-447\" srcset=\"http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-4.png 610w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-4-300x129.png 300w, http:\/\/www.wangkaixuan.tech\/wp-content\/uploads\/2020\/06\/image-4-604x259.png 604w\" sizes=\"auto, (max-width: 610px) 100vw, 610px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">3.\u4f7f\u7528\u5efa\u8bae<\/h2>\n\n\n\n<p>C++\u4e4b\u7236Bjarne Stroustrup\u63d0\u51fa\uff0c\u5e94\u8be5\u9ed8\u8ba4\u4f7f\u7528vector\u800c\u4e0d\u662flist\uff0c\u56e0\u4e3avector\u76f8\u6bd4list\u81f3\u5c11\u6709\u5982\u4e0b\u51e0\u70b9\u597d\u5904\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6570\u636e\u5b58\u50a8\u662f\u76f8\u90bb\u7684\uff0c\u5bf9\u7f13\u5b58\u53cb\u597d\uff0c\u547d\u4e2d\u7387\u9ad8<\/li><li>vector\u6ca1\u6709\u9891\u7e41\u7684\u52a8\u6001\u5185\u5b58\u7533\u8bf7\u548c\u91ca\u653e\uff0c\u6296\u52a8\u8f83\u5c0f<\/li><\/ul>\n\n\n\n<p>\u8fd9\u91cc\u662f\u539f\u6587\uff1a<a href=\"https:\/\/www.stroustrup.com\/bs_faq.html#list\">\u94fe\u63a5<\/a><\/p>\n\n\n\n<p>\u8fd9\u91cc\u6709\u4e00\u4e2a\u89c6\u9891\uff0c\u57281:07:00\u5de6\u53f3\uff0cBjarne Stroustrup\u5c31list\u548cvector\u7684\u4f7f\u7528\u63d0\u51fa\u4e86\u89c1\u89e3\uff0c\u5e76\u548c\u4e00\u4f4d\u89c2\u4f17\u8fdb\u884c\u4e86\u8ba8\u8bba\uff1a<a href=\"https:\/\/channel9.msdn.com\/Events\/GoingNative\/GoingNative-2012\/Keynote-Bjarne-Stroustrup-Cpp11-Style\">\u94fe\u63a5<\/a><\/p>\n\n\n\n<p>\u53e6\u5916\uff0c\u5982\u679c\u5fc5\u987b\u8981\u4f7f\u7528list\uff0c\u8bf7\u8003\u8651\u5982\u4e0b\u5efa\u8bae\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u4e0d\u8981\u8ba9list\u7684\u5143\u7d20\u6570\u91cf\u592a\u591a<\/li><li>\u5224\u7a7a\u65f6\uff0c\u4f7f\u7528empty()\u800c\u975esize()==0\uff0c\u56e0\u4e3a\u5728\u67d0\u4e9b\u5e73\u53f0\u4e0b\uff0c\u6c42size\u8981\u904d\u5386\u6574\u4e2a\u94fe\u8868\uff01\u5305\u62ecGCC\u90fd\u662f\u8fd9\u6837\u7684\u5b9e\u73b0\uff01<\/li><li>\u52a0\u4e0a\u7f16\u8bd1\u4f18\u5316\u547d\u4ee4(\u6bd4\u5982-O3\uff0c\u5b9e\u6d4b\u53ef\u4ee5\u63d0\u9ad840%\u7684\u6027\u80fd)<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4.\u76f8\u5173\u8d44\u6e90<\/h2>\n\n\n\n<p>1.gcc stl\u6e90\u7801\u5730\u5740\uff1a<a href=\"https:\/\/github.com\/gcc-mirror\/gcc\/tree\/master\/libstdc++-v3\">\u94fe\u63a5<\/a><\/p>\n\n\n\n<p>2.stackoverflow\u4e0a\u7684\u4e00\u4e2a\u95ee\u7b54\uff1a<a href=\"https:\/\/stackoverflow.com\/questions\/40110020\/stl-list-very-bad-performance\">\u94fe\u63a5<\/a><\/p>\n\n\n\n<p>3.C++\u4e4b\u7236\u5173\u4e8elist\u7684\u4f7f\u7528\u5efa\u8bae\uff1a<a href=\"https:\/\/www.stroustrup.com\/bs_faq.html#list\">\u94fe\u63a5<\/a><\/p>\n\n\n\n<p>4.C++\u4e4b\u7236\u5173\u4e8elist\u7684\u4f7f\u7528\u5efa\u8bae\uff08\u89c6\u9891\uff09\uff1a<a href=\"https:\/\/channel9.msdn.com\/Events\/GoingNative\/GoingNative-2012\/Keynote-Bjarne-Stroustrup-Cpp11-Style\">\u94fe\u63a5<\/a><\/p>\n\n\n\n<p>5.\u4faf\u6377\u300aSTL\u6e90\u7801\u5256\u6790\u300b\u7b2c\u4e09\u7ae0 \u8fed\u4ee3\u5668\u6982\u5ff5\u4e0etraits\u7f16\u7a0b\u6280\u6cd5 \u7b2c3.4.5\u5c0f\u8282 \u8fed\u4ee3\u5668\u76f8\u5e94\u578b\u522b\u4e4b\u4e94\uff1aiterator_category<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1.\u73b0\u8c61 \u73b0\u8c611\uff1a\u6700\u8fd1\u5728\u5199\u4e00\u4e2a\u65b0\u7cfb\u7edf\uff0c\u65b9\u5f0f\u662f\u5f00\u53d1\u4e00\u4e2a\u52a8\u6001\u5e93\uff0c\u5d4c\u5165\u67d0\u4e2a\u4e3b\u7a0b\u5e8f\u4e2d\u8fd0\u884c\uff0c\u4e3b\u7a0b\u5e8f\u8c03\u7528\u6211\u5b9e\u73b0\u7684\u63a5\u53e3\u5b8c\u6210\u67d0\u4e9b\u529f\u80fd\u3002\u672a\u5d4c\u5165\u52a8\u6001\u5e93\u65f6\uff0c\u4e3b\u7a0b\u5e8f\u7684TPS\u53ef\u4ee5\u8fbe\u523010&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"http:\/\/www.wangkaixuan.tech\/?p=438\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-438","post","type-post","status-publish","format-standard","hentry","category-05-01-"],"_links":{"self":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts\/438","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=438"}],"version-history":[{"count":0,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts\/438\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=438"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}