[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

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: "Dimitre Novatchev dnovatchev@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 26 Jul 2016 14:24:15 -0000
Re:  XPath expression which checks that a string is  be
boolean(string-length(.)[. > 0 and . < 11)])

On Tue, Jul 26, 2016 at 6:30 AM, Eliot Kimber ekimber@xxxxxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> How about:
>
> if (string(.) != '') then string-length(.) le 10 else false()
>
> That requires casting the context to a string twice but calculating string-length() once.
>
> Or
>
> matches(., '..?.?.?.?.?.?.?.?')
>
> (Can I do that with '..?{0,10}'? Reviewing the syntax it looked like the quantifier could only be a single digit.)
>
> Cheers,
>
> Eliot
>
>> On July 26, 2016 at 7:01 AM "Wolfgang Laun wolfgang.laun@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>>
>>
>> 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)
>> >
>> >
>> >
>>
> 



-- 
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
Never fight an inanimate object
-------------------------------------
To avoid situations in which you might make mistakes may be the
biggest mistake of all
------------------------------------
Quality means doing it right when no one is looking.
-------------------------------------
You've achieved success in your field when you don't know whether what
you're doing is work or play
-------------------------------------
To achieve the impossible dream, try going to sleep.
-------------------------------------
Facts do not cease to exist because they are ignored.
-------------------------------------
Typing monkeys will write all Shakespeare's works in 200yrs.Will they
write all patents, too? :)
-------------------------------------
Sanity is madness put to good use.
-------------------------------------
I finally figured out the only reason to be alive is to enjoy it.

Current Thread

PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.