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並前往https://www.generacodice.com/en/articolo/988516/Best-way-to-check-if-an-PowerShell-Object-exist

Best way to check if an PowerShell Object exist?

I would stick with the $null check since any value other than '' (empty string), 0 , $false and $null will pass the check: if ($ie) {...} . OTHER TIPS.

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