PowerShell variables

• 21 November 2021
• powershell,
• print-object-property,
• property,
• subexpression,
• var,
• variable

Variables in PowerShell are relatively straight forward. And if you want to use a variable in a string, you are free to do so:

$myVar = 3
Write-Host "MyVar: $myVar" # MyVar: 3

$myObject = [PSCustomObject]@{
    Country  = 'Portugal'
    Capital  = 'Lisbon'
}
Write-Host "Country: $myObject.Country" # Country: @{Country=Portugal; Capital=Lisbon}.Country
Write-Host "Country: $($myObject.Country)" # Country: Portugal

The interesting thing we see above is that if we have an object (or array) and you want to use a property in a string, you should use subexpression operator $( ). This way, you force the PowerShell to evaluate the complex expression first.

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