Essential Books

Scope

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The default scope for a variable is the enclosing container. If outside a script, or other container then the scope is Global. To specify a scope, it is prefixed to the variable name $scope:varname like so: 

$foo = "Global Scope"
function myFunc {
    $foo = "Function (local) scope"
    Write-Host $global:foo
    Write-Host $local:foo
    Write-Host $foo
}
myFunc
Write-Host $local:foo
Write-Host $foo

Output: 

```
Global Scope
Function (local) scope
Function (local) scope
Global Scope
Global Scope
```
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Variables in PowerShell:
* Variables in PowerShell
* Removing a variable
* Simple variable
* Scope
* Arrays
* List Assignment of Multiple Variables
* Reading a CmdLet Output
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