Steve Schacht (shot at frontier dot net) wrote:
> It _does_ say, though, that "b"
> is the same as the one character appearing at position 2 and that "bc" is
> the same as the two characters appearing at position 2.
Yep, and by the same token, "" is the same as the zero-character string
appearing at position 2 within "abc". I like Kevin Windham's example, i.e.
S = "a" + "" + "b" + "c"
The empty string has to occur at position 2 here, simply because it was
explicitly inserted into the string at that position. But it's there (and
everywhere) even implicitly.
- Michael
Michael J. Hussmann
E-mail: michael at michael-hussmann dot de
WWW: http://michael-hussmann.de
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