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Re: Format Number and Empy Elements

Subject: Re: Format Number and Empy Elements
From: "Abel Braaksma (online)" <abel.online@xxxxxxxxx>
Date: Tue, 7 Aug 2007 14:22:32 +0200 (CEST)
Re:  Format Number and Empy Elements
> You guys helped me out with avoiding empty elements when summing
>
> 	Sum(my_node[text()])
>
> Works fantastically, but I'm still plagued by 'NaN' in my output.
> This time it's caused by:
>
> 	format-number(discount, '$#,.00')
>
> If I have <discount/> in my XML I want to display $0.00 in the
> output; however, when discount is an empty element, I get NaN
>

as an alternative you can consider using the same method as for your
original sum(). A sum of a sequence of zero elements is zero and the
sum of one element is the element content itself. This way sum()
works for you as a NaN-killer. Looks like this:

format-number(sum(discount[.]), '$#,.00')

Or, possibly better, depending on how good/bad your input data is
(consider your first sum() code too): sum(discount[number(.)])

Cheers,
-- Abel Braaksma

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