PowerTip: Two Quick Ways to Check Variables in PowerShell

Summary: Check for undeclared variables.

 How can I cause the script to generate an error if a variable has not been declared?

 Here are a couple of ways to do this with Windows PowerShell.

a. Place set-psdebug –strict anywhere in the script. Any nondeclared variable will generate an error when accessed.

b. Use Set-StrictMode –Version latest