slide 54

New Functions and New Larger Function Library

major difference between XPath 1.0 and XPath 2.0

• Many more functions
  • both useful and funky
  • shared with XQuery 1.0
  • its own spec (http://www.w3.org/TR/xpath-functions)
• While XPath 1.0
  • was theoretically extendable
  • extensions were often eschewed as non-portable
  • EXSLT initiative (extension library defined by community) mitigates this
• XPath 2.0 still allows user (and community) extensions
  • EXSLT extensions are mostly in XPath 2.0 already
  • Also ... XSLT 2.0 provides a way to author functions — whoa baby!