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Excerpt
hiddentrue

isNull(test) Returns Boolean function returns True if the passed value is _NULL.

isNull is a Boolean function that returns either true or false based on the value passed to it.

Function: isNull()

isNull is a Boolean function that returns either true or false based on the value passed to it. For example:

Returns True if the passed value is _NULL.

Syntax

isNull(test)

ArgumentTypeDescription
testAnyThe value to be checked

Examples

isNull(_NULL)

Returns True

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