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merged 3 commits into from
Oct 22, 2025
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Update hashtable documentation with cloning note #12454

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Update hashtable documentation with cloning note
OscarFalck17 Oct 22, 2025
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Update reference/docs-conceptual/learn/deep-dives/everything-about-ha…
OscarFalck17 Oct 22, 2025
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sdwheeler Oct 22, 2025
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12 changes: 11 additions & 1 deletion reference/docs-conceptual/learn/deep-dives/everything-about-hashtable.md
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@@ -1,7 +1,7 @@
---
description: Hashtables are really important in PowerShell so it's good to have a solid understanding of them.
ms.custom: contributor-KevinMarquette
ms.date: 06/25/2023
ms.date: 10/22/2025
title: Everything you wanted to know about hashtables
---
# Everything you wanted to know about hashtables
Expand Down Expand Up @@ -269,6 +269,16 @@ $environments.Keys.Clone() | ForEach-Object {
}
```

> [!NOTE]
> You can't clone a hashtable containing a single key. PowerShell throws an error. Instead, you
> convert the **Keys** property to an array, then iterate over the array.

```powershell
@($environments.Keys) | ForEach-Object {
$environments[$_] = 'SrvDev03'
}
```

## Hashtable as a collection of properties

So far the type of objects we placed in our hashtable were all the same type of object. I used ages
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