Why is ,(1)[1] different from ,$null? #6357

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1. powercode commented on Mar 10, 2018

   

   Staffan Gustafsson (powercode)

   on Mar 10, 2018

   Last edited by powercode

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   The second returns AutomationNull.Value which is not enumerated by the pipeline.

   $null is enumerated.

   See for example the implementation of foreach:
   

   PowerShell/src/System.Management.Automation/engine/runtime/Operations/MiscOps.cs

   Line 2748 in bcf86d4

   if (ie != AutomationNull.Value)

   👍React with 👍1Reacted by alx9r
2. alx9r commented on Mar 10, 2018

   

   alx9r

   on Mar 10, 2018

   Last edited by alx9r

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   Thank you Staffan Gustafsson (@powercode). For other readers, here are some resources on AutomationNull:

   • #5674 (comment)
   • stackoverflow.com: Why and how are these two $null values different?

   👍React with 👍1Reacted by Michael Klement
3. alx9r

   closed this as completedon Mar 10, 2018
4. Ilya (iSazonov)

   added

   Issue-Questionideally support can be provided via other mechanisms, but sometimes folks do open an issue to get aideally support can be provided via other mechanisms, but sometimes folks do open an issue to get a

   Resolution-AnsweredThe question is answered.The question is answered.

   on Mar 24, 2018
5. mklement0 commented on May 5, 2018

   

   Michael Klement (mklement0)

   on May 5, 2018

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   alx9r: This comes down to the question you later asked in #6436 and which I've brought into focus in #6436 (comment), but I've decided to create a separate issue for it: #6823