Implement ForEach Iterator in Powershell

Question

I have created a custom class in PowerShell which I would like to be able to access via the foreach command.

In PHP, I can do this by using implements iterator in my class declaration and implementing some variables and functions. Is there something similar in PowerShell? How do I let my PowerShell class be accessed by foreach?

Note: I'm using PowerShell Core

Can you show a example of what you are wanting to happen? maybe there is a better way then what you are thinking of — ArcSet
– ArcSet, Commented Oct 30, 2018 at 0:22

fdafadf · Accepted Answer · 2018-10-30 12:53:46Z

1

You can extend some IEnumerable implementation like this:

class Test : System.Collections.Generic.List[PSObject]
{
    Test($items)
    {
        $items -split ';' |% { $this.Add($_) }
    }
}

$test = New-Object Test('a;1;x;y;z;2;3;4')

foreach ($item in $test)
{
    Write-Host $item
}

The result:

a
1
x
y
z
2
3
4

answered Oct 30, 2018 at 12:53

fdafadf

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