A functional expression is a value expression that consists of a function keyword and its associated arguments.

Examples of Functional Expressions

$absolute(6-11)

Result is 5.

$length("Smith")

Result is 5.

$cos(0)

Result is 1.

$log10(2*50)

Result is 2.

$year(19990923)

Result is 1999.

$maxof($absolute(-10),4+5)

Result is 10.