Naming and creating variables

Variables in PowerShell are preceded by the dollar symbol ($), for example:

$MyVariable

Values are assigned to variables using the assignment operator, =:

$MyVariable = 'Hello World'

It is possible to assign the same value to several variables in one statement. For example, this creates two variables, first and second, both with a value of 0:

$first = $second = 0

The name of a variable may contain numbers, letters, underscores, and question marks. For example, each of the following is a valid name:

• $123
• $x
• $my_variable
• $variable
• $varIABle
• $Path_To_File

The following are invalid names, each includes a character outside of the set above:

• $a-b
• $variable!
• $a{b}c

Variables are frequently written in either camel case or Pascal case. For example:

• $myVariable is camel case.
• $MyVariable is Pascal case.

PowerShell does not enforce a naming convention, nor does it consistently...