Combining lists in STATA

Just a quick one: today I learned that you can easily add or substract lists from each other in STATA. Say you want a list of all numeric variables, apart from a couple. This is how you would do it:

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*First list, all numeric vars
ds, not(type string)
local not_string `r(varlist)'
di "`not_string'"

*Second list, the numeric variables we want to exclude
local num_exc idnum year age
di "`num_exc'"

*Final list, simply substract!
local final_list: list not_string - num_exc
di "`final_list'"

Simple! While working on this I listened to: