Filter array of hashtables

Question

I have an array of hashtables and I am trying to filter it to those who has a property value to true, but this what I am doing does not looks good.

# object looks like this
$array = @(
    @{ Name = 'First'; Passed = $true }
    @{ Name = 'Second'; Passed = $false }
)

function Filter {
    Param($array)
    $filtered = @()

    foreach ($item in $array) {
        if ($item.Passed = $true) {
            $filtered += $item
        }
    }

    return $filtered
}

Is there any other way I can get all elements who has property Passed = $True without the need to add those to another array.

@AnsgarWiechers won't that catch anything with a Passed that is "truthy"? (i.e. not just the ones with a value of $true) — Mike Shepard
– Mike Shepard, Commented Oct 9, 2019 at 14:11
@MikeShepard Yes. But since the key seems to have only boolean values that shouldn't be an issue. Otherwise change the condition to $_.Passed -eq $true. — Ansgar Wiechers
– Ansgar Wiechers, Commented Oct 9, 2019 at 14:21

Dave Sexton · Accepted Answer · 2019-10-09 14:13:11Z

1

Just pipe your array into a Where-Object like so:

$array = @(
    @{ Name = 'First'; Passed = $True }
    @{ Name = 'First'; Passed = $False }
)

$array = $array | Where-Object Passed -EQ $True

answered Oct 9, 2019 at 14:13

Dave Sexton

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2 Comments

Ansgar Wiechers Over a year ago

Beware that this will not give an array result if the Where-Object filter returns less than 2 items.

Dave Sexton Over a year ago

Good point, changing it to $array = @($array | Where-Object Passed -EQ $True) would fix that.

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