题目:Champernowne's constant An irrational decimal fraction is created by concatenating the positive integers: 0.123456789101112131415161718192021... It can be seen that the 12th digit of the fraction
背景 现象一:引入了一个包A,服务突然起不来了,后台有报错信息,Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'xxx' available: expected at least 1 bean which qualifies as auto
Qt开发,从一个C#项目中搬过来一段代码,看上去很简单的逻辑,不过报错了: case value is not a constant expression 也就是switch case后面不支持变量,怎么解决呢?用常量当然可以,不过代码就变得不太友好了。 网上看到一条建议,很简单,不用switch case了,改用if else代替: if(unit == DT::UNIT_DEG){
学习matlab/simulink时使用Memory模块和Trigger模块 报错:'XXX'has sample time [0, 1]. Only constant (inf) or inherited (-1) sample times are allowed in 'XXX' 说明memory模块设置不对 双击memory模块 解决办法:勾选Inherit s