{"id":1251,"date":"2018-09-09T20:52:11","date_gmt":"2018-09-09T12:52:11","guid":{"rendered":"http:\/\/www.yusian.com\/blog\/?p=1251"},"modified":"2018-09-09T20:53:22","modified_gmt":"2018-09-09T12:53:22","slug":"c%e6%a0%87%e5%87%86%e5%ba%93%e4%b8%admap%e7%9a%84%e7%ae%80%e5%8d%95%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/cpp\/2018\/09\/09\/2052111251.html","title":{"rendered":"C++\u6807\u51c6\u5e93\u4e2dmap\u7684\u7b80\u5355\u4f7f\u7528\u793a\u4f8b"},"content":{"rendered":"<p>1\u3001\u5728STL\u4e2d\uff0cmap\u662f\u4e00\u79cd\u5173\u8054\u5f0f\u5bb9\u5668\uff0c\u5305\u542b\u952e\u503c\u5bf9\u5373\u5143\u7d20\u4e3apair<typename,typename>\uff1b<br \/>\n2\u3001\u9664\u6b64\u4e4b\u540e\uff0cmap\u8fd8\u662f\u4e00\u79cd\u6709\u5e8f\u5bb9\u5668\uff0c\u8fd9\u548cObj-C\u4e0d\u4e00\u6837\uff0cObj-C\u4e2d\u76f8\u5bf9\u5e94\u7684\u6570\u636e\u7c7b\u578b\u4e3aDictionay\uff0c\u8fd9\u662f\u4e00\u4e2a\u65e0\u5e8f\u5bb9\u5668\uff1b<br \/>\n3\u3001\u4e0elist\u3001vector\u4e0d\u4e00\u6837\u7684\u5730\u65b9\u5728\u4e8e\uff0cmap\u6307\u5b9a\u4e86\u952e\u503c\u5bf9\u7c7b\u578b\u540e\uff0c\u5bb9\u5668\u4e2d\u5143\u7d20\u662f\u63a5\u6536\u4e86\u952e\u503c\u5bf9\u7c7b\u578b\u540e\u7684pair\uff1b<br \/>\n4\u3001\u770b\u4e0b\u4ee3\u7801\u793a\u4f8b\u6216\u8bb8\u66f4\u76f4\u89c2\u4e00\u70b9\uff1a<\/p>\n<pre lang=\"cpp\" line=\"1\">#include <iostream>\r\n#include <map>\r\n\r\nusing namespace std;\r\n\r\nint main(){\r\n    map<int, int> map1;\r\n    \/\/ \u63d2\u5165\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u76f4\u63a5\u4f7f\u7528{}\u7684\u65b9\u5f0f\r\n    map1.insert({1, 1});\r\n    \/\/ \u63d2\u5165\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u6307\u5b9a{}\u7c7b\u578b\u4e3apair<int,int>\r\n    map1.insert((pair<int, int>){2, 2});\r\n    \/\/ \u63d2\u5165\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u4f7f\u7528pair<int,int>\u7684\u6784\u9020\u51fd\u6570\r\n    map1.insert(pair<int, int>(3, 3));\r\n    \/\/ \u63d2\u5165\u4e00\u4e2a\u952e\u503c\u5bf9\u65f6\u4f1a\u8fd4\u56de\u4e00\u4e2apair\uff0cpair\u7684\u4e00\u4e2a\u5143\u7d20\u4e3amap\u8fed\u4ee3\u5668\uff0c\u7b2c\u4e8c\u4e2a\u5143\u7d20\u4e3abool\u503c\r\n    \/\/ \u610f\u601d\u662f\u63d2\u5165\u540e\u4f1a\u8fd4\u56de\u63d2\u5165\u7684\u7ed3\u679c\uff0c\u6210\u529f\u6216\u5931\u8d25\u5e76\u8fd4\u56de\u7ed3\u679c\u6240\u5728\u4f4d\u7f6e\uff0c\u5373\u8fed\u4ee3\u5668\u6307\u5411\u5f53\u524d\u4f4d\u7f6e\r\n    pair<map<int, int>::iterator, bool> result;\r\n    result = map1.insert(pair<int, int>(4, 4));\r\n    \/\/ \u8f93\u51fa\u7ed3\u679c\r\n    cout << result.second << endl;\r\n    \/\/ \u904d\u5386map\u4e2d\u6240\u6709\u5143\u7d20\uff0c\u5143\u7d20\u4e3apair\u7c7b\u578b\r\n    for_each(map1.begin(), map1.end(), [](pair<int, int> p)->void{\r\n        cout << p.first << \":\" << p.second << endl;\r\n    });\r\n    return 0;\r\n}<\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<br \/>\n<code>1<br \/>\n1:1<br \/>\n2:2<br \/>\n3:3<br \/>\n4:4<br \/>\nProgram ended with exit code: 0<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u5728STL\u4e2d\uff0cmap\u662f\u4e00\u79cd\u5173\u8054\u5f0f\u5bb9\u5668\uff0c\u5305\u542b\u952e\u503c\u5bf9\u5373\u5143\u7d20\u4e3apair\uff1b 2\u3001\u9664\u6b64\u4e4b\u540e\uff0cmap\u8fd8\u662f\u4e00\u79cd\u6709\u5e8f\u5bb9\u5668\uff0c\u8fd9\u548cObj-C\u4e0d\u4e00\u6837\uff0cObj-C\u4e2d\u76f8\u5bf9\u5e94\u7684\u6570\u636e\u7c7b\u578b\u4e3aDictionay\uff0c\u8fd9\u662f\u4e00\u4e2a\u65e0\u5e8f\u5bb9\u5668\uff1b 3\u3001\u4e0elist\u3001vector\u4e0d\u4e00\u6837\u7684\u5730\u65b9\u5728\u4e8e\uff0cmap\u6307\u5b9a\u4e86\u952e\u503c\u5bf9\u7c7b\u578b\u540e\uff0c\u5bb9\u5668\u4e2d\u5143\u7d20\u662f\u63a5\u6536\u4e86\u952e\u503c\u5bf9\u7c7b\u578b\u540e\u7684pair\uff1b 4\u3001\u770b\u4e0b\u4ee3\u7801\u793a\u4f8b\u6216\u8bb8\u66f4\u76f4\u89c2\u4e00\u70b9\uff1a #include #include using namespace std; int main(){ map map1; \/\/ \u63d2\u5165\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u76f4\u63a5\u4f7f\u7528{}\u7684\u65b9\u5f0f map1.insert({1, 1}); \/\/ \u63d2\u5165\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u6307\u5b9a{}\u7c7b\u578b\u4e3apair map1.insert((pair){2, 2}); \/\/ \u63d2\u5165\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u4f7f\u7528pair\u7684\u6784\u9020\u51fd\u6570 map1.insert(pair(3, 3)); \/\/ \u63d2\u5165\u4e00\u4e2a\u952e\u503c\u5bf9\u65f6\u4f1a\u8fd4\u56de\u4e00\u4e2apair\uff0cpair\u7684\u4e00\u4e2a\u5143\u7d20\u4e3amap\u8fed\u4ee3\u5668\uff0c\u7b2c\u4e8c\u4e2a\u5143\u7d20\u4e3abool\u503c \/\/ \u610f\u601d\u662f\u63d2\u5165\u540e\u4f1a\u8fd4\u56de\u63d2\u5165\u7684\u7ed3\u679c\uff0c\u6210\u529f\u6216\u5931\u8d25\u5e76\u8fd4\u56de\u7ed3\u679c\u6240\u5728\u4f4d\u7f6e\uff0c\u5373\u8fed\u4ee3\u5668\u6307\u5411\u5f53\u524d\u4f4d\u7f6e pair result; result = map1.insert(pair(4, 4)); \/\/ \u8f93\u51fa\u7ed3\u679c cout<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[89,109,110,103],"class_list":["post-1251","post","type-post","status-publish","format-standard","hentry","category-cpp","tag-c","tag-map","tag-pair","tag-stl"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1251","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=1251"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1251\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}