xsl-list
[Top] [All Lists]

Re: [xsl] Increasing sequence ?

2015-03-25 13:51:52
On 25 March 2015 at 18:36, Dimitre Novatchev dnovatchev(_at_)gmail(_dot_)com <
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:

every $v in 1 to (count($sequence)-1) satisfies ($sequence[$v] lt
$sequence[$v+1])

This may be inefficient (depending on the XPath engine being used).

I think the following has better chances of being more efficient --
write an xsl:function, name it, say, "increasing". The body of this
function can be just:

    not($seq[2])  or $seq[1] lt $seq[2]  and  increasing(subsequence($seq,
2))


It would appear that this makes -1,0,2,1 an ascending sequence. I dislike
this "empty-is-false trick" - once in a while you get bitten.

count($seq) &lt; 2 or ...

-W





Cheers,
Dimitre


On Wed, Mar 25, 2015 at 10:20 AM, Leo Studer 
leo(_dot_)studer(_at_)varioweb(_dot_)ch
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
A similar problem as before, is the integer sequence increasing?

this is my solution:

every $v in 1 to (count($sequence)-1) satisfies ($sequence[$v] lt
$sequence[$v+1])

Do you have a better one?

Cheers
Leo




--
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? :)
-------------------------------------
I finally figured out the only reason to be alive is to enjoy it.


--~----------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
EasyUnsubscribe: http://lists.mulberrytech.com/unsub/xsl-list/1167547
or by email: xsl-list-unsub(_at_)lists(_dot_)mulberrytech(_dot_)com
--~--
<Prev in Thread] Current Thread [Next in Thread>