XPath: Navigating XML with XPath 1.0 and 2.0 Kick Start

Chapter 4. XPath 1.0 Functions and Operators

IN THIS CHAPTER

• The XPath Boolean Operators and Functions

• The XPath Numeric Operators and Functions

• The XPath String Operators and Functions

• The XPath Node-Set Operators and Functions

• In Brief

The XPath Boolean Operators and Functions

You can use XPath logical operators to produce Boolean true/false results. These are the logical operators:

• != means “is not equal to.”

• < means “is less-than” (use < in XML documents).

• <= means “is less-than or equal to” (use <= in XML documents).

• = means “is equal to” (C, C++, Java, and JavaScript programmers take note—this operator is one = sign, not two).

• > means “is greater-than.”

• >= means “is greater-than or equal to.”

And as we saw in Chapter 3, you can also use the and ...