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When Powershell function won’t work: you define them with commas and parentheses, but call them with spaces and no parentheses

Posted by jpluimers on 2019/08/15

The function or command was called as if it were a method. 
Parameters should be separated by spaces. For information about 
parameters, see the about_Parameters Help topic.

Every now and then I bump into the above error. The reason is this:

  1. Functions are defined with commas between parameters and parentheses around them
  2. One-parameter functions can be called with one parameter surrounded by parentheses
  3. Multi-parameter functions need to be called with spaces between parameters and no parentheses surrounding them

Confused? #MeToo

The problem: [WayBackabout_Parameters_Default_Values | Microsoft Docs

Based on [WayBack] Powershell function won’t work.

–jeroen

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