Pack record

Combines multiple individual streams into a single record object, assigning each stream to a named field.

Use this when

• A downstream component expects a structured input with specific field names.
• You want to merge outputs from several sibling components into one typed record.
• You need clarity and reusability that a tuple cannot provide.

What it does

Consumes one message from each input stream per tick and emits a record where each field is populated with the corresponding input. Inputs DetectedClass, Rectangle<Double>, UInt64 emit {class: DetectedClass, rectangle: Rectangle<Double>, counter: UInt64}.

Inputs

Type	Description
$ts...	One input stream per field of the output record.

Outputs

Type	Description
{$ns:$ts...}	A record with named, typed fields.

Parameters

This transformation takes no parameters. Field names come from the downstream type definition.

Works best with

• Unpack record — natural inverse.
• Pack named downstream to then wrap the record as a domain type.

Caveats

• All input streams must produce a message every tick, or the pipeline back-pressures.
• Use Pack tuple instead when order matters but field names do not.