Using multiple statements in the selection criteria for Where-Object

Question

Trying to do a simple loop to populate an array

[array]$td= @()
[int]$test = 4
[int]$x = 0
for($x=1,$x -le $test, $x++)
{
$Temp = (Get-date).AddDays(-$x)
$td += Get-Date $Temp -Format dd/MM/yyyy
}
$td

Error message is due to type casting.. yet I am setting what I want them to be and also seem to be getting a spurious 0?

Error is

Line |

7 | for($x=1,$x -le $test, $x++)
| ~~~~~~~~~~~~~~~~~~~~~~~
| Could not compare "1" to "4 0". Error: "Cannot convert the "System.Object[]" value of type "System.Object[]" to type "System.Int32"."

Answer 1

$td is an array of objects, not ints. You can store whatever you want in it.

$td = @()
$td += 10
$td += "Hello"
$td += 45.67

If you want to store only ints then type it explicitly.

[int[]] $td = @()
$td += 10
$td += "Hello" # Error

But later in your code it looks like $td should be an array of strings since you're converting a date to a formatted string.

Moving on to your next issue, you're using a comma in the for and you need a semicolon. Commas are used to separate array elements so PS is seeing an array.

[string[]] $td = @()
$test = 4
for ($x = 1; $x -le $test; $x++) {
   $td += (Get-Date).AddDays(-$x).ToString('dd/MM/yyyy')
}