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Gotcha Return in the pipeline

suggest change 
get-childitem | foreach-object { if ($_.IsReadOnly) { return } }

Pipeline cmdlets (ex: ForEach-Object, Where-Object, etc) operate on closures. The return here will only move to the next item on the pipeline, not exit processing. You can use break instead of return if you want to exit processing. 

get-childitem | foreach-object { if ($_.IsReadOnly) { break } }
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Return behavior in PowerShell:
* Return behavior in PowerShell
* Early exit
* Gotcha Return in the pipeline
* Return with a value
* Gotcha Ignoring unwanted output
* How to work with functions returns
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