Pattern: Use of global variable
Issue: -
Global variables are strongly discouraged as they can cause errors across different systems.
Globally scoped variables include:
- Automatic variables
- Preference variables
- Variables, aliases, and functions that are in your Windows PowerShell profiles
To understand more about scoping, see Get-Help about_Scopes.
Use other scope modifiers for variables.
Example of incorrect code:
$Global:var1 = $null
function Test-NotGlobal ($var)
{
$a = $var + $var1
}Example of correct code:
$var1 = $null
function Test-NotGlobal ($var1, $var2)
{
$a = $var1 + $var2
}