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st: substr() addition
Is there a better way of trucating a string variable? I just wanted to
last two characters of a variable and had to do use the reverse() function
gen str20 newdose = reverse(substr(reverse(dose),3,.)
I was wondering whether it would have been better to have the option in
substr() to go backwards along the
string perhaps instead of having a . having a -. :) hence instead of going
to the end of the string with the .
you could actually go to the start of the string....?
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