RE: Testing for presence of alphabetical characters
> I've heard that string-length() can get expensive because of > multi-byte characters, although I would've thought translate() > sufferered from the same problem... I think few people are likely to notice the difference, but it is worth being aware that string-length() might take linear time rather than constant time because of the need to look for surrogate pairs. Of course this is very implementation-dependent. However, if you're testing the result of a translate() operation, I would think that the cost of calling string-length() is almost certainly less than the cost of calling translate(). Michael Kay
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