foreach v of var * {
la var `v' "`=`v'[1]'"
replace `v' = "" if _n == 1
}
这几行代码是什么意思




foreach v of var * {
cap destring `v', replace

}
这几行代码是什么意思


cap pr drop HHI
pr def HHI
args x
use 银行业金融机构基本信息表_`x', clear
keep InstituionID ProvinceName CityName Y
drop if C == "县" | C == ""
drop if I == .
drop if P == C
bys P C I: egen rm = count(Y)
bys P C: egen Nm = count(Y)
g rm_Nm = rm/Nm
g rm_Nm2 = rm_Nm^2
duplicates drop
bys P C: egen HHI = sum(rm_Nm2)
keep P C Y H
duplicates drop
drop if HHI == .
save HHI_`x', replace
end
这几行代码的含义？