XML/XPath: Difference between revisions

The problem description isn't clear on whether what

is wanted is the element or the text. Because of that,

I'm doing both except for the first problem.

The commands are being inputted into Scala's REPL, to

<lang scala>scala> val xml = <inventory title="OmniCorp Store #45x10^3">

xml: scala.xml.Elem =

<inventory title="OmniCorp Store #45x10^3">

<section name="health">

<item upc="123456789" stock="12">

<name>Invisibility Cream</name>

<price>14.50</price>

<description>Makes you invisible</description>

</item>

<item upc="445322344" stock="18">

<name>Levitation Salve</name>

<price>23.99</price>

<description>Levitate yourself for up to 3 hours per application</description>

</item>

</section>

<section name="food">

<item upc="485672034" stock="653">

<name>Blork and Freen Instameal</name>

<price>4.95</price>

<description>A tasty meal in a tablet; just add water</description>

</item>

<item upc="132957764" stock="44">

<name>Grob winglets</name>

<price>3.56</price>

<description>Tender winglets of Grob. Just add water</description>

</item>

</section>

</inventory>

scala> val firstItem = xml \\ "item" head

firstItem: scala.xml.Node =

<item upc="123456789" stock="12">

</item>

scala> xml \\ "price" foreach println

<price>14.50</price>

<price>23.99</price>

<price>4.95</price>

<price>3.56</price>

scala> xml \\ "price" map (_ text) foreach println

14.50

23.99

4.95

3.56

scala> val elements = xml \\ "name" toArray

elements: Array[scala.xml.Node] = Array(<name>Invisibility Cream</name>, <name>Levitation Salve</name>, <name>Blork and

Freen Instameal</name>, <name>Grob winglets</name>)

scala> val values = xml \\ "name" map (_ text) toArray

values: Array[String] = Array(Invisibility Cream, Levitation Salve, Blork and Freen Instameal, Grob winglets)</lang>