Well, you (and future maintainers of your code) might find the
substring() version less obscure.
It's odd that: it wouldn't have occurred to me to use a string function
to get the last digit, certainly if you were using a language other than
xslt1 (which has a habit of coercing silently between numbers and
strings) I would have thought that using arithemetic operators
would have been far more natural than using string operations.
David
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