InterSystems Ensemble学习笔记(三) 基础语法

系列目录

一、坑太多

对基础语法做些笔记。

///$F字符串查找

#dim newString as %String
set newString="1234567890abcdefgh"
set innum=$F(newString,"1")
$$$LOGINFO("["_innum_"]")

输出：2

///$F字符串查找，位置定位在字符串后
#dim newString as %String
set newString="1234567890abcdefgh"
set innum=$F(newString,"456")
$$$LOGINFO("["_innum_"]")

输出：7

///$E字符串截取
#dim newString as %String
set newString="1234567890abcdefgh"

set innum=$E(newString,7,*)
$$$LOGINFO("["_innum_"]")    


输出：7890abcdefgh

///$P字符串截取。第三个参数1，是向前截取，2是向后截取
        #dim newString as %String
        set newString="1234567890abcdefgh"
        set innum=$P(newString,"456",1)
        $$$LOGINFO("["_innum_"]")

输出：123

///$P字符串截取。第三个参数1，是向前截取，2是向后截取
        #dim newString as %String
        set newString="1234567890abcdefgh"
        set innum=$P(newString,"456",2)
        $$$LOGINFO("["_innum_"]")

输出7890abcdefgh

posted on 2021-09-14 13:43 yi-sheng 阅读(274) 评论(0) 编辑收藏举报