Exponentiation Time Limit: 500MS Memory Limit: 10000K Total Submissions: 126980 Accepted: 30980 Description Problems involving the computation of exact values of very large magnitude and precision are common. For example, the computation of t
select a.catalog_name,decode(substr(trunc((a.s/b.count2),4)*100||'%',0,1),'.',replace(trunc((a.s/b.count2),4)*100||'%','.','0.'),trunc((a.s/b.count2),4)*100||'%') as percentfrom (SELECT PARENT_NAME as catalog_name, sum(COUNTNUM) as s FROM RES_PR
在小数相加时,可能会产生多个小数位.如下所示: var x=1+1; //2 var x=1.20+1.11; //2.31 var x=1.56+1.76; //3.3200000000000003 导致上述原因是因为Javascript的数字类型是以64位的IEEE 754格式存储的.在用的时候一定要小心,测试要到位. 解决方法: 加上toFixed()函数就可以把函数控制在想要的小数位以内,具体语法如下: var x=1+1; //2 var x=1.20+1.11;
问题 The certificate used to sign "AppName" has either expired or has been revoked. An updated certificate is required to sign and install the application 解决方法1 新建一个目录,把项目文件复制到这个目录中,在新的目录中打开工程,解决. 解决方法2 更改目录名,不要有小数点