Testing for null in Powershell: Why does testing an empty array behave differently from an empty string?

Question

Consider this code

\"Type: array\"
$v = @()
\"  -eq `$null: $($v -eq $null)\"
\"  -ne `$null: $($v -ne $null)\"

\"Type: string\"
$v = \'\'
\"  -eq `$null: $         


        

Answer 1

When comparison operators are used against a collection, they do not return a boolean value ($true or $false). They return all the members of the collection that meet the condition.

See:

Get-help About_Comparison_Operators