PowerShell: True/False
Whenever you need boolean, use $true or $false.
They are automatic variables.
[see PowerShell: Automatic Variables]
If you just type “True” in PowerShell, it's a error, because its invalid command or expression. Nor is it a valid literal expression.
| Value | Value in Boolean Context |
|---|---|
$true | True |
| Nonzero number | True |
| Nonempty string | True |
| Nonempty array | True |
| Hashtable (empty or not) | True |
$false | False |
$null | False |
| Zero | False |
| Empty string | False |
| Empty array | False |
Logical Operators
a -and b- True when both sides are true.
a -or b- True when at least one side is true.
a -xor b- “exclusive or”. True when only one side is true.
-not a- Reverse true/false.
! a- Same as
-not