Functions - PowerShell

function Add-Numbers {
 $args[0] + $args[1]
}

<ApprovedVerb>-<Prefix><SingularNoun>

function Test-DoesFileExistBool {
    param (
        [ValidateSet(“Tom”,”Dick”,”Jane”)]
        [String]
        $Name
    )
    Test-Path $FilePath 2> $null
}
$FExistBool = Test-DoesFileExistBool -FilePath $FilePath

function Compare-IsBoolTrue {
    param (
        [string[]]$TFBool
    )
    IF ($TFBool -eq "True") {
     Write-Host "File Found"
    } ELSE {
     Write-Host "File NOT Found"
    }
}
Compare-IsBoolTrue -TFBool $FExistBool
Compare-IsBoolTrue -TFBool TRUE

function Output-SalesTax {
 param( [int]$Price, [int]$Tax )
 $Price + $Tax
}

#$result = Add-Numbers (5, 10) --Wrong!
$result = Output-SalesTax 5 10    #--Right

echo $result
#15

Get-Verb | Sort-Object -Property Group

Verb        Group
----        -----
Resize      Common
Reset       Common
Select      Common
Search      Common
Redo        Common
Push        Common
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Remove      Common
Set         Common
Undo        Common
Switch      Common
Watch       Common
Unlock      Common
Skip        Common
Show        Common
Step        Common
Split       Common
Exit        Common
Enter       Common
Format      Common
Find        Common
Clear       Common
Add         Common
Copy        Common
Close       Common
Get         Common
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New         Common
Pop         Common
Optimize    Common
Join        Common
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Read        Communications
Disconnect  Communications
Connect     Communications
Write       Communications
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Receive     Communications
Out         Data
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Backup      Data
ConvertTo   Data
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ConvertFrom Data
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Revoke      Security