Sequences (Continued)

The following code defines $prices to contain a sequence of decimal values computed from the prices of each product.

<xsl:variable name="prices">
 <xsl:for-each select="products">
  <xsl:choose>
   <xsl:when test="@price">
    <xsl:sequence select="xs:decimal(@price)"/>
   </xsl:when>
   <xsl:otherwise>
    <xsl:sequence select="xs:decimal(@cost) * 1.5"/>
   </xsl:otherwise>
  </xsl:choose>
 </xsl:for-each>