Foreach -parallel对象

Question

最近，我们开始编写需要很长时间才能完成的脚本。因此，我们深入研究了PowerShell工作流。在阅读了一些文档之后，我了解了一些基本知识。但是，我似乎找不到为foreach -parallel语句中的每个单独项创建一个foreach -parallel的方法。

需要解释的代码：

Workflow Test-Fruit {

    foreach -parallel ($I in (0..1)) {

        # Create a custom hashtable for this specific object
        $Result = [Ordered]@{
            Name  = $I
            Taste = 'Good'
            Price = 'Cheap'
        }

        Parallel {
            Sequence {
                # Add a custom entry to the hashtable
                $Result += @{'Color' = 'Green'}
            }

            Sequence {
                # Add a custom entry to the hashtable
                $Result += @{'Fruit' = 'Kiwi'}
            }
        }

        # Generate a PSCustomObject to work with later on
        [PSCustomObject]$Result
    }
}

Test-Fruit

它出错的地方在于从$Result块中向Sequence哈希表添加一个值。即使在尝试以下操作时，它仍然失败：

$WORKFLOW:Result += @{'Fruit' = 'Kiwi'}

Answer 1

好的，给你，试过并测试：

Workflow Test-Fruit {

    foreach -parallel ($I in (0..1)) {

        # Create a custom hashtable for this specific object
        $WORKFLOW:Result = [Ordered]@{
            Name  = $I
            Taste = 'Good'
            Price = 'Cheap'
        }

        Parallel {

            Sequence {
                # Add a custom entry to the hashtable
                $WORKFLOW:Result += @{'Color' = 'Green'}
            }

            Sequence {
                # Add a custom entry to the hashtable
                $WORKFLOW:Result += @{'Fruit' = 'Kiwi'}
            }


        }

        # Generate a PSCustomObject to work with later on
        [PSCustomObject]$WORKFLOW:Result
    }
}

Test-Fruit

您应该将其定义为$WORKFLOW:var，并在整个工作流中重复使用它来访问作用域。

Answer 2

您可以将$Result分配给Parallel块的输出，然后添加其他属性：

$Result = Parallel {
    Sequence {
        # Add a custom entry to the hashtable
        [Ordered]@{'Color' = 'Green'}                    
    }

    Sequence {
        # Add a custom entry to the hashtable
       [Ordered] @{'Fruit' = 'Kiwi'}
    }
}

# Generate a PSCustomObject to work with later on
$Result += [Ordered]@{
    Name  = $I
    Taste = 'Good'
    Price = 'Cheap'
}

# Generate a PSCustomObject to work with later on
[PSCustomObject]$Result