{"id":121,"date":"2023-06-27T11:14:25","date_gmt":"2023-06-27T03:14:25","guid":{"rendered":"https:\/\/i.u-ch.com\/?p=121"},"modified":"2023-07-14T11:20:37","modified_gmt":"2023-07-14T03:20:37","slug":"c%e7%9a%84stdmap%e6%9f%a5%e8%af%a2%e5%be%88%e6%85%a2%e7%9a%84%e5%8e%9f%e5%9b%a0","status":"publish","type":"post","link":"https:\/\/i.u-ch.com\/?p=121","title":{"rendered":"C++\u7684std::map\u67e5\u8be2\u5f88\u6162\u7684\u539f\u56e0"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>std::map&lt;std::string, vector&lt;vector&lt;std::string>>>::iterator it;\n\nit = mCsvDict.find(csvFilePath);\nif (it == mCsvDict.end()) {\n    \/\/\u5982\u679c\u914d\u7f6e\u6587\u4ef6\u7684\u6570\u636e\u4e0d\u5b58\u5728\uff0c\u5219\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\n    loadFile(csvFilePath);\n    it = mCsvDict.find(csvFilePath);\n}\n\nauto csvStrList = it->second;\n\n\/* \u83b7\u53d6\u7b2ciRow\u884c\u6570\u636e *\/\nvector&lt;std::string> rowArr = csvStrList.at(iRow);\nstatic std::string colStr = \"\";\nif(int(rowArr.size()) > iCol) {\n    \/* \u83b7\u53d6\u7b2ciCol\u5217\u6570\u636e *\/\n    colStr = rowArr.at(size_t(iCol));\n}\n\nreturn colStr;\n<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u4ee3\u7801\uff0c\u4f7f\u7528\u4e86std::map\uff0c\u8fd0\u884c\u8d77\u6765\u5f88\u6162\u3002<\/p>\n\n\n\n<p>\u4ed4\u7ec6\u770b\u4e86\u4e00\u4e0b\uff0c\u539f\u56e0\u5c31\u662fauto csvStrList = it-&gt;second;\u8fd9\u4e00\u53e5\uff0c\u8fd9\u91cc\u4e0d\u662f\u5f15\u7528\uff0c\u800c\u662f\u62f7\u8d1d\uff0c\u6240\u4ee5\u4f1a\u5f88\u6162\u3002<\/p>\n\n\n\n<p>\u6539\u826f\u65b9\u6848\uff0c\u5c31\u662f\u76f4\u63a5\u7528it-&gt;second\u5c31\u597d\u4e86\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><code>\tstd::map&lt;std::string, vector&lt;vector&lt;std::string>>>::iterator it;\n\n\tit = mCsvDict.find(csvFilePath);\n\tif (it == mCsvDict.end()) {\n\t\tloadFile(csvFilePath);\n\t\tit = mCsvDict.find(csvFilePath);\n\t}\n\n    \/* \u83b7\u53d6\u7b2ciRow\u884c\u6570\u636e *\/\n    vector&lt;std::string> rowArr = it->second.at(iRow);\n\n    static std::string colStr = \"\";\n    if(int(rowArr.size()) > iCol) {\n        \/* \u83b7\u53d6\u7b2ciCol\u5217\u6570\u636e *\/\n\tcolStr = rowArr.at(size_t(iCol));\n    }\n\n    return colStr;<\/code><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4ee5\u4e0a\u4ee3\u7801\uff0c\u4f7f\u7528\u4e86std::map\uff0c\u8fd0\u884c\u8d77\u6765\u5f88\u6162\u3002 \u4ed4\u7ec6\u770b\u4e86\u4e00\u4e0b\uff0c\u539f\u56e0\u5c31\u662fauto csvStrList = i [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[],"_links":{"self":[{"href":"https:\/\/i.u-ch.com\/index.php?rest_route=\/wp\/v2\/posts\/121"}],"collection":[{"href":"https:\/\/i.u-ch.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i.u-ch.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i.u-ch.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i.u-ch.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=121"}],"version-history":[{"count":3,"href":"https:\/\/i.u-ch.com\/index.php?rest_route=\/wp\/v2\/posts\/121\/revisions"}],"predecessor-version":[{"id":142,"href":"https:\/\/i.u-ch.com\/index.php?rest_route=\/wp\/v2\/posts\/121\/revisions\/142"}],"wp:attachment":[{"href":"https:\/\/i.u-ch.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i.u-ch.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i.u-ch.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}