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Re: XPath expression which checks that a string is be

Subject: Re: XPath expression which checks that a string is between 1 and 10 characters in length?
From: "Wolfgang Laun wolfgang.laun@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 26 Jul 2016 12:01:22 -0000
Re:  XPath expression which checks that a string is  be
Just for fun:

string-length() idiv 2 le 5

Optimization by obfuscation. Phooey.
-W

On 26 July 2016 at 13:55, Martin Honnen martin.honnen@xxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> On 26.07.2016 13:51, Costello, Roger L. costello@xxxxxxxxx wrote:
>
> I need an XPath expression which returns true if the string in <A> is
>> between 1 and 10 characters in length, and false otherwise.
>>
>> For example, the XPath expression should return true on this XML:
>>
>>         <A>hi</A>
>>
>> Here's an inefficient XPath expression:
>>
>> (string-length(.) gt 0) and (string-length(.) le 10)
>>
>> It's inefficient because it computes the string length twice.
>>
>> Is there a more efficient XPath expression to solve this problem?
>>
>
> Well, in XPath 3 you can use
>
>   let $l := string-length()
>   return ($l gt 0 and $l le 10)

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