funcSubString(strstring,begin,endint)string{
rs:=[]rune(str)
length:=len(rs)
ifbegin<0{
begin=0
}
ifbegin>=length{
return""
}
ifend>length{
returnstring(rs[begin:])
}
returnstring(rs[begin:end])
} 原文链接：https://www.f2er.com/go/190263.html
