Assignment operators

Assignment operators are used to give values to variables. The assignment operators available are the following:

• Assign: =
• Add and assign: +=
• Subtract and assign: -=
• Multiply and assign: *=
• Divide and assign: /=
• Modulus and assign: %=

As with the arithmetic operators, add and assign may be used with strings, arrays, and hashtables. Multiply and assign may be used with strings and arrays.

Assign, add and assign, and subtract and assign

The assignment operator (=) is used to assign values to variables and properties, for example, assignment to a variable:

$variable = 'some value' 

Or we might change the PowerShell window title by assigning a new value to its property:

$host.UI.RawUI.WindowTitle = 'PowerShell window' 

The add and assign operator (+=) operates in a similar manner to the addition operator. The following example assigns the value 1 to a variable, then += is used to add 20 to that value:

$i = 1 
$i += 20

The preceding example is equivalent to writing the following:

$i = 1...