Data update

Task/XML-XPath/Crystal/xml-xpath.cr

@@ -0,0 +1,45 @@
+require "xml"
+str = <<-XML
+<inventory title="OmniCorp Store #45x10^3">
+
+
+    <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>
+
+
+
+
+    <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>
+
+
+</inventory>
+XML
+
+doc = XML.parse str
+# Retrieve the first "item" element
+first_item = doc.xpath("//item[1]")
+
+# Perform an action on each "price" element (print it out)
+doc.xpath_nodes("//price/text()").each do |price|
+  puts price
+end
+
+# Get an array of all the "name" elements
+names = doc.xpath_nodes("//name").to_a