Use a for-in loop to iterate through a list

Uses a for-in loop to iterate through a list.

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For detailed documentation that includes this code sample, see the following:

• Iteration

Code sample

YAML

- assignStep:
    assign:
      - list: [1, 2, 3, 4, 5]
      - sum: 0
- loopStep:
    for:
      value: v                          # required, v = 1, 2, …, 5
      in: ${list}
      steps:
        - getStep:
            assign:
              - sum: ${sum + v}
- returnStep:
    return: ${sum}                      # sum is 15

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