How would you design safe WhatIf and Confirm behavior in a function?
Documentation: Microsoft Learn
Use SupportsShouldProcess on an advanced function and call $PSCmdlet.ShouldProcess around the state-changing operation.
Interview · Question 17 of 34
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A strong answer
Use SupportsShouldProcess on an advanced function and call $PSCmdlet.ShouldProcess around the state-changing operation. WhatIf previews the target and action; Confirm provides an approval prompt according to impact.
Show it concretely
1PS> function Set-DemoState { [CmdletBinding(SupportsShouldProcess)] param([string] $Name) if ($PSCmdlet.ShouldProcess($Name , 'Update state')) { } }
Expect this follow-up
What limitations would you explain before calling WhatIf a complete safety guarantee?
