演示在 for 循环内创建的变量的局部作用域

演示了在循环中创建的任何变量如何不存在于该循环之外。

深入探索

如需查看包含此代码示例的详细文档，请参阅以下内容：

• 迭代
• 变量

代码示例

YAML

- init:
    assign:
      - workflowScope: foo
- outerLoop:
    for:
      value: outerLoopValue  # outerLoopValue does not exist outside of outerLoop step
      in: [1, 2, 3, 4]
      steps:
        - outerLoopAssign:
            assign:
              - outerLoopScope: ${workflowScope}  # outerLoopScope is a new variable and does not exist outside of outerLoop step
        - innerLoop:
            for:
              value: innerLoopValue  # innerLoopValue does not exist outside of innerLoop step
              in: [5, 6, 7, 8]
              steps:
                - innerLoopAssign:
                    assign:
                      - workflowScope: ${innerLoopValue}
                      - innerLoopScope: ${outerLoopScope}  # innerLoopScope is a new variable and does not exist outside of innerLoop step
- final:
    return:
      - ${workflowScope}  # allowed
      # - ${outerLoopScope}  # not allowed
      # - ${innerLoopScope}  # not allowed
      # - ${outerLoopValue}  # not allowed

后续步骤

如需搜索和过滤其他 Google Cloud 产品的代码示例，请参阅 Google Cloud 示例浏览器。