Arrays

Arrays in PowerShell are used to store collections of items, such as strings, integers, or objects. They are versatile and can be manipulated in various ways to add, remove, or access elements.

 

Working with arrays in PowerShell:

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Declaring an Array is important and the only way to get desired results when

iterating through data. Example would be a foreach loop and assigning values.

 

$Services = Get-Service 

# Declaring an Array
$MyArray=@()
Foreach($Service in $Services){

     # Using the += To assign and append Array

     $MyArray+="Service Name: $($Service.Name) `t Status: $($Service.Status)"

 }

​

Creating Arrays

You can create arrays in PowerShell using the comma-separated

values enclosed in parentheses () or by using the @() notation:

​

# Using comma-separated values
$array1 = ("apple", "banana", "cherry")

# Using @() notation
$array2 = @("apple", "banana", "cherry")

 

Accessing Elements

You can access elements of an array by index. PowerShell

arrays are zero-indexed, meaning the first element is at index 0.

​

$array = "apple", "banana", "cherry"

# Accessing elements
$array[0]  # Output: apple
$array[1]  # Output: banana
$array[2]  # Output: cherry

 

Adding Elements

To add elements to an array, you can use the += operator or the += method.

​

$array = "apple", "banana"

# Using +=
$array += "cherry"

# Using +=
$array += "date", "elderberry"

$array  

# Output: apple, banana, cherry, date, elderberry

 

 

Iterating through Arrays

You can iterate through arrays using loops like foreach or for.

 

$array = "apple", "banana", "cherry"

# Using foreach loop
foreach ($item in $array) {
    Write-Output $item
}

# Using for loop
for ($i = 0; $i -lt $array.Length; $i++) {
    Write-Output $array[$i]
}

 

Removing Elements

To remove elements from an array, you can use the Remove()

method or other methods like slicing

​

($array[0..1]) or filtering ($array | Where-Object { $_ -ne "value" }).

$array = "apple", "banana", "cherry", "date", "elderberry"

# Using Remove()
$array.Remove("banana")

$array  

# Output: apple, cherry, date, elderberry