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ISNULL

math logic

The ISNULL function consumes a parameter p from the top of the stack and pushes onto the stack true if p is null, else it pushes false.

ISNULL is available since version 1.0.0.

See also

Signatures

Examples

<% 'Warp 10' %> ISNULL 2.0 ISNULL NULL ISNULL