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Preview Queue Element (G Dataflow)

Last Modified: January 9, 2017

Returns the element at the front of the queue without removing the element from the queue.

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queue

Reference to a queue. Use Obtain Queue to obtain a queue reference.

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timeout in milliseconds

The time, in milliseconds, that the node waits for an element to become available in the queue if the queue is empty.

If the node waits the specified amount of time and the queue remains empty, timed out? is True.

Default: -1—Specifies the node never times out.

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error in

Error conditions that occur before this node runs.

This node runs normally even if an error occurred before this node runs. Otherwise, the node responds to this input according to standard error behavior.

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queue out

Reference to the queue unchanged.

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element

The element at the front of the queue. This data type changes to match the subtype of queue.

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timed out?

A Boolean that indicates whether an element did not become available in the queue before the node timed out or if an error occurred.

TRUE An element did not become available before the node timed out. Also returns TRUE if an error occurred.
FALSE An element did become available before the node timed out.
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error out

Error information. The node produces this output according to standard error behavior.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported


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