Question

Here is my code:

# hi.ps1  function fun {     Write-Host $args }  Write-Host '---------------' Write-Host $args Write-Host '---------------' fun Write-Host '---------------' 

This is the output:

PS C:\scratch> .\hi there jim --------------- there jim ---------------  --------------- 

My question is, why isn’t $args visible within fun?

Answer 1

It seems that $args has ‘script’ scope. There are three scopes: local, global, and script.

If the function is changed like this:

function fun {     Write-Host $script:args } 

Then it will work. The ‘script:’ is a scope resolution operator (‘local:’ is the default). I found that result somewhat experimentally, and I can’t say I know what the point of script scope is exactly, but it appears that variables in script scope belong to the script itself in some way.

Edit: I’m accepting my own answer as the best one since it is what solved my problem, but also see the other answers and their comments for some useful information.