CODEWITHSUNDEEP
powershellfor-loop
icxb
icxb

Reputation: 29

powershell basic for loops

I'm new to powershell, and I am learning how to use for loops function. here is the script: 

$arys = @( 1, 2, 3, 4, 5)
for ($i=0; $i -le $arys.Length – 1; $i++)
{Write-Host $arys[$i]}

The only thing I don't understand is this part: $arys[$i] -> what is the explanation of this script? I mean I can see $arys and $i are variables, but why is $i needs to be put inside the closing brackets []?

Upvotes: 1

Views: 90

Answers (1)

briantist
briantist

Reputation: 47772

$i contains the number in the current iteration of the loop. The loop counts from 0 through the length of the array.

To get the item from the array, you must ask the array for the item at index $i, hence $arys[$i]. Square brackets are the indexing operator for arrays.

So for example if the value of $i were 3, you would get get $arys[3] which the value 4 (because the array is indexed starting at 0).

This might be more apparent if you use an array of strings instead of numbers like $arys = @( 'A', 'B', 'C', 'D', 'E' ).

Upvotes: 1

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