fn:not function
The fn:not function returns false if the effective boolean value of an item is true. fn:not returns true if the effective boolean value of an item is false.
Syntax
- sequence-expression
- Any sequence that contains items of any type, or the empty sequence.
Returned value
The returned value is an xs:boolean value. If the effective boolean value of sequence-expression is false, this function returns true. If the effective boolean value of sequence-expression is true, this function returns false.
Example
The
following function returns true:
fn:not("a"="b")fn:not("false")