XQuery quirk of the day

[David Carlisle]

On 13/04/2012 20:09, David Lee wrote:
> XQuery constantly surprises me !
>
> Today I was looking for a more concise way of testing if a string is
>  empty or blank.
>
not sure what you mean by blank, I thought you meant white space,
but looking at your code fragment, I think you meant empty sequence

boolean(string($s))


is false if $s is () or "" and true for any other string value.

David