PowerShell provides a data structure, An array, that is designed to store a collection of items. The items can be the same type or different types.
To create and initialize an array, just assign multiple values to a variable with a comma separated.
PS > $my_array = 5,7,13,45
You can also use range operator (..) as below
PS > $range_array = 2..8
As a result, $range_array contains six values: 2, 3, 4, 5, 6, 7, and 8.
When no data type is specified, PowerShell creates each array as an object array (type: System.Object)
To determine the data type of an array, use the GetType() method.
PS > $my_array.GetType()
To cast an array, precede the variable name with an array type enclosed in brackets such as string, long, or int32 .
PS > [int32]$values = 1000,2000,3000,4000
As a result, the $values array can contain only integers.
The array sub-expression operator creates an array, even if it contains zero or one object.
PS > $a = @() PS > $a.Count 0 PS > $b = @("PowerShell Tutorial") PS > $b.Count 1
To display all the elements in the array, type the array name
PS > $b
You can also refer to the elements in an array by using an index, beginning at position 0.
PS > $a
You can retrieve part of the array using a range operator for the index.
PS > $a[1..4]
Negative numbers count from the end of the array. “-1” refers to the last element of the array.
PS > $a[-3..-1]