Powershell Scripting Variables - powershell

Question

I have set some variables in PowerShell. The variables are created at the beginning of my script. However, the values for the variables are being executed at start which in turns gives and error message. Ex:
$checker = get-item -path C:\users\user\desktop\Foldername
$finder = Test-path -Path $checker
if($finder -eq $finder )
{
}
Else
{
Create-Item -Path C:/users/user/desktop -name "Foldername" -itemtype Directory
}
I do know that if I run this it will give me an error because the directory never existed and I can just change the variable order to avoid errors.
My question is that this script is going to be more lines of code than this and I would have to create the variable right when its needed to avoid errors.
How can I use these variables like a regular programming language where the variables are ignored until called upon.

Answer 1

Using Get-Item and checking with Test-Path afterwards is not a good design. Two better ways:
Use Get-Item only and check for $null to check for its existence:
$checker = Get-Item -Path C:\users\user\desktop\Foldername -ErrorAction SilentlyContinue
if ($checker) {
# do something with the existing folder
} else {
Create-Item -Path C:/users/user/desktop -Name "Foldername" -ItemType Directory
}
Use Test-Path only to check for its existence:
if (Test-Path -Path C:\users\user\desktop\Foldername) {
# do something with the existing folder
} else {
Create-Item -Path C:/users/user/desktop -Name "Foldername" -ItemType Directory
}