首先创建subutils.wxs文件varsubfunction(val,start0,end17){if(val.length0||valundefined){return}if(val.lengthend){returnval.substring(start

cString.SubString(intindex,intlength)String.SubString(intstart)等效于javascriptstringObject.substr(start,length)stringObject.substr(start) java 

方法一：通过String.substring()方法将最后的三位去掉/获取精确到秒的时间戳@return/publicstaticintgetSecondTimestamp(Datedate){if(nulldate){return0;}Str

select\fromtablenamewherecolumnlike"%str%"查询表中的某列里包含某str的行updateear\_bbs\_threads\_contentsetcontentreplace(content,substring(content,locate

一、方法一GROUP\_CONCAT、SUBSTRING\_INDEX1、GROUP\_CONCAT2、SUBSTRING\_INDEX3、例子!(https://oscimg.oschina.net/oscnet/ce76717cd814d3

substring(intbeginIndex,intendIndex)方法在jdk6和jdk7中的实现是不同的。了解他们的区别可以帮助你更好的使用他。为简单起见，后文中用substring()代表substring(intbeginIndex,intendIndex)方法。substring()的作用

SELECT  其他字段,  SUBSTRING\_INDEX(SUBSTRING\_INDEX(a.'逗号分隔字段',',',b.help\_topic\_id1),',',1)AS'分拆后字段' FROM  \表\ASa  JOINmysql.help\_topicAS

字符串截取SubStringORRemove1stringstr3"123abc456";23//str3str3.Substring(0,i);//从左边开始取字符串的前i个字符(str3str3.Remove(i,str

!/bin/bashx.$HOME/.bash_profilevarPOJ_2versionNumber${var:4:1}if"$versionNumber""1";thenecho"Project1"elif"$versionNum

Youaregivenastring, s,andalistofwords, words,thatareallofthesamelength.Findallstartingindicesofsubstring(s)in s thatisaconcatenationofeachwordin words