Databases
StackOverflow2013
Postsdbo
POxslt recursive multiplication
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POxslt recursive multiplication
    primarykey
    data
    text
    <p>The xml document below represents 3 number, 2, 2 and 2. A node <code>&lt;s&gt;</code> is counted as a number and ended with <code>&lt;zero/&gt;</code>.</p> <pre><code> &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;nat xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="nat.xsd"&gt; &lt;s&gt; &lt;s&gt; &lt;zero/&gt; &lt;/s&gt; &lt;/s&gt; &lt;s&gt; &lt;s&gt; &lt;zero/&gt; &lt;/s&gt; &lt;/s&gt; &lt;s&gt; &lt;s&gt; &lt;zero/&gt; &lt;/s&gt; &lt;/s&gt; &lt;/nat&gt; </code></pre> <p>I just started learning with xslt and this is one of the exercise for recursion. I could do plus recursively for adding up all numbers but this multiplying more than two number just blows my mind. I have no idea how to do it.</p> <p>The expected answer for above xml doc is 8s(ignore the format) :</p> <p><code>&lt;s&gt;&lt;s&gt;&lt;s&gt;&lt;s&gt;&lt;s&gt;&lt;s&gt;&lt;s&gt;&lt;s&gt;&lt;zero/&gt;&lt;/s&gt;&lt;/s&gt;&lt;/s&gt;&lt;/s&gt;&lt;/s&gt;&lt;/s&gt;&lt;/s&gt;&lt;/s&gt;</code> My idea was this, I can have a template to do multiplication for two number by adding. So for this 2x2x2, I would do the 2nd 2 times the 3rd 2 that returns 4 and finally do 2*4. But call template don't return value in xslt unlike java or scheme so I appreciate any hints/helps. </p> <p><strong>Update:</strong> I got my answer by adding in a print template to Dimitre's answer. Here it is:</p> <pre><code> &lt;xsl:template name="print"&gt; &lt;xsl:param name="pAccum"/&gt; &lt;xsl:choose&gt; &lt;xsl:when test="$pAccum &gt; 0"&gt; &lt;s&gt; &lt;xsl:call-template name="print"&gt; &lt;xsl:with-param name="pAccum" select="$pAccum - 1"/&gt; &lt;/xsl:call-template&gt; &lt;/s&gt; &lt;/xsl:when&gt; &lt;xsl:otherwise&gt; &lt;zero/&gt; &lt;/xsl:otherwise&gt; &lt;/xsl:choose&gt; &lt;/xsl:template&gt; </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USbili
    1. USbili
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POxslt recursive multiplication
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThis doesn't seem a suitable exercise for recursion -- why don't you try a simpler and more clear problem? Have: `<nums><num>2</num>><num>3</num>><num>4</num>><num>5</num></nums>` and find the product of all `num` elements.
      singulars
      1. POxslt recursive multiplication
      1. USDimitre Novatchev
    2. COYour comment about templates makes it sound as if you want to do this in XSLT 1.0. If you really need to use a version of the language that has been superseded for nearly 6 years, you should say so in your post. Then those of us for whom XSLT 1.0 is a distant fading memory needn't bother answering.
      singulars
      1. POxslt recursive multiplication
      1. USMichael Kay
    3. CO@MichaelKay: ouch, I'm sorry for the vague comment. This is meant for XSLT 2.0. As I was just thinking out loud when I tried to solve this problem.
      singulars
      1. POxslt recursive multiplication
      1. USbili
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload