StringUtils.substring(String.valueOf(maxSequence), 0, -3)如上,关键就是那个-3,表示倒数第三位.…

Swift 中 String 取下标及性能问题 取下标 String String 用 String.Index 取下标(subscript)得到 Character,String.Index 要从 String 中获取 let greeting = "Guten Tag!" greeting[greeting.startIndex] // Character "G" greeting[greeting.index(before: greeting.endIndex…

场景再现 我需要查询公司名称包含给定字符串的公司,于是我写了下面的测试小例子: var condition = "测试"; var query = from b in db.Companies where (condition == null || condition == "") ? true : b.Name.Contains(condition) orderby b.CompID select new { CompID = b.CompID, Name = b…

C. String Manipulation 1.0 Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 codeforces.com/problemset/problem/91/B Description One popular website developed an unusual username editing procedure. One can change the username only by deleting some characte…

尝试使用weblogic部署一个Demo应用,在选择应用目录后,报出下面的异常: VALIDATION PROBLEMS WERE FOUND problem: cvc-enumeration-valid: string value '3.0' is not a valid enumeration value for web-app-versionType in namespace http://java.sun.com/xml/ns/javaee:<null> 3.0不是命名空间为'http…

 String前补0 java的String字符串补0或空格 方法一:自己写的方法 /* *数字不足位数左补0** @param str* @param strLength*/public static String addZeroForNum(String str, int strLength) {int strLen = str.length();if (strLen < strLength) {while (strLen < strLength) {StringBuffer sb = n…

String Manipulation 1.0 Time Limit: 3000ms Memory Limit: 262144KB This problem will be judged on CodeForces. Original ID: 159C64-bit integer IO format: %I64d      Java class name: (Any) One popular website developed an unusual username editing proced…

vue.esm.js?efeb:628 [Vue warn]: Invalid prop: type check failed for prop "defaultActive". Expected String with value "0", got Number with value 0. 问题解决:active:"0", 0加上双引号即可.  <el-menu :default-active="navBar.active&qu…

更新反馈 1.博友@落幕残情童鞋说到了,Nginx反向代理实现跨域,因为我目前还没有使用到,给忽略了,这次记录下,为下次补充.此坑已填 2.提示:跨域的姊妹篇——<三十三║ ⅖ 种方法实现完美跨域> 代码已上传Github+Gitee,文末有地址 今天忙着给小伙伴们提出的问题解答,时间上没把握好,都快下班了,赶紧发布:书说上文<从壹开始前后端分离[ .NET Core2.0 +Vue2.0 ]框架之十一 || AOP自定义筛选,Redis入门 11.1>,昨天咱们说到了分布式缓存键…

题目描述 查找入职员工时间排名倒数第三的员工所有信息CREATE TABLE `employees` (`emp_no` int(11) NOT NULL,`birth_date` date NOT NULL,`first_name` varchar(14) NOT NULL,`last_name` varchar(16) NOT NULL,`gender` char(1) NOT NULL,`hire_date` date NOT NULL,PRIMARY KEY (`emp_no`)); 思…