I want to write a expression that does something like this...
takes a sequence like this
("Page1","Page2","Page3")
and outputs
Page1 > Page2 > Page3
so, assuming the sequence is in a variable $pages we try something like this...
for $p in $pages
return
concat( $p, ' > ')
but of course, this causes a trailing ' > ' which we don't want...
This can be written as:
for $cnt in count( $pages )
return
(
( for $cnt2 in $cnt,
$p in 1 to $cnt2 - 1
return
($pages[$p], '>')
),
$pages[$cnt]
)
And the result is:
Page1 > Page2 > Page3 > Page4
--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
You've achieved success in your field when you don't know whether what
you're doing is work or play
On 3/16/07, John McGowan <john(_at_)sevenac(_dot_)com> wrote:
> is not absolutely clear what you want to do, something like the
> following may be useful:
>
>
> for $k in 1 to 10
> return (4 to 13)[$k]
>
>
> To put it simply, an indexing variable in the range
>
> 1 to count($someSequence)
>
I'll try to explain a little better what I'm getting at...
I want to write a expression that does something like this...
takes a sequence like this
("Page1","Page2","Page3")
and outputs
Page1 > Page2 > Page3
so, assuming the sequence is in a variable $pages we try something like this...
for $p in $pages
return
concat( $p, ' > ')
but of course, this causes a trailing ' > ' which we don't want...
so something like is what I'm looking for
for $p in $pages
return
concat($p, if (---sometest---) then '' else ' > ' )
problem is, I can't figure out how to write an expression that can
tell if this is the last item in the sequence.
Does that explain it a little better?
--
John McGowan
Seven A C Consulting, Inc.
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