http://css3.sinriv.com/ 2026-06-03T02:28:06+0800 http://css3.sinriv.com/ http://css3.sinriv.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2019-09-04T17:17:18+0800 Anonymous (anonymous@undisclosed.example.com) http://css3.sinriv.com/%E6%95%B0%E6%8D%AE%E5%BA%93:leveldb:%E5%89%8D%E7%BC%80%E6%9F%A5%E8%AF%A2?rev=1567588638 leveldb前缀查询 先创建一个函数，用于检查前缀 bool isPrefix(const std::string & pfx , const std::string & str){ auto p=pfx.c_str(); auto s=str.c_str(); int len = pfx.size(); for(int i=0;i<len;i++){ if(p[i]!=s[i]) return false; } return true; }