Reducer

[data/array/Reducer]

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Reduces array. External node(s) receive the partial result and each item and send back a new partial result.

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Keywords: iterate, fold, aggregate

Input ports

• array: any[]

  Receives array to be reduced. Example: ["A", "B", "C"]

• initial: any

  Receives initial value for the reduced array Example: ""

• part reduced: any

  Receives reduced array before the current (by tag) item. Example: "AB"

Output ports

• reduced: any

  Sends the reduced array. Example: "ABC"

• item: any[][number]

  Sends the current item. Example: "C"

• part reduced: any

  Sends reduced array after the current (by tag) item. Example: "A"