Flow Is NULL

Determines if the input flow is NULL or its length = 0.

A NULL flow is flow with a length of -1. it can be generated by a flow-pass, flow-stop, flow-pass-if-changed.

A ZERO length flow can also be generated by a array-set-size,

Settings

in

Input flow(s).

zero

Returns a 1 value if the input flow has a ZERO length.

null

Returns a 1 value if the input flow has a NULL length.

See also

version 3.0.153

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