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Re: Re: xpath2 functions returning ()

Subject: Re: Re: xpath2 functions returning ()
From: David Carlisle <davidc@xxxxxxxxx>
Date: Fri, 4 Jan 2002 17:12:56 GMT
Re:  Re: xpath2 functions returning ()
> It is correct to define the empty string and the empty sequence to be
> the same strings (the empty sequence naturally belongs to all sequence
> types).

That wuld be a rather big change. If strings were sequences in that
sense then ("abc")[2] would be "b".

Currently in the Xpath2 draft strings, like any values of a primitive type are
considered to be equivalent to sequences of length 1, with the value of
the item in the sequence being the string. (Ie Xpath2 has taken
sequences on board totally, singleton values are not really first class
objects any more, they are just sequences of length 1)


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