UseDeclaredVarsMoreThanAssignments.md

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Extra Variables	PSSA v1.21.0	06/28/2023	reference	UseDeclaredVarsMoreThanAssignments

UseDeclaredVarsMoreThanAssignments

Severity Level: Warning

Description

Variables that are assigned but not used are not needed.

Note

For this rule, the variable must be used within the same scriptblock that it was declared or it won't be considered to be 'used'.

How

Remove the variables that are declared but not used.

Example

Wrong

function Test
{
    $declaredVar = 'Declared just for fun'
    $declaredVar2 = 'Not used'
    Write-Output $declaredVar
}

Correct

function Test
{
    $declaredVar = 'Declared just for fun'
    Write-Output $declaredVar
}

Special case

The following example triggers the PSUseDeclaredVarsMoreThanAssignments warning because $bar is not used within the scriptblock where it was defined.

$foo | ForEach-Object {
    if ($_ -eq $false) {
        $bar = $true
    }
}

if($bar){
    Write-Host 'Collection contained a false case.'
}