CODEWITHSUNDEEP
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Acerbity
Acerbity

Reputation: 527

Conditionally change boolean variable in an imported CSV

I am working on a script and I want to compare an array to another array, and change a boolean value (from $false to $true) based on a result. This works fine on strings using the Replace method, but that doesn't exist for boolean values. Can anyone tell me how to do this?

$bv is an array of objects, as follows.

ServerName,Domain,Environment,Tier0
ServerA,usa,dev,$false
ServerB,usa,sit,$false

I am trying to compare that list to another list of Tier0 computers ($t0List) that looks like this.

ServerB
ServerC
ServerD

So if there is a match between the ServerName in column 1 of $bv and an entry in $t0List, then I want to change the Tier0 column in $bv to $true.

foreach ($b in $bv) {
if ($t0List -contains $b.ServerName) {
    $b.Tier0.Replace($b.Tier0,$true)
    }
}

The error I get with the above code is...

Method invocation failed because [System.Boolean] does not contain a method named 'Replace'.

Upvotes: 1

Views: 363

Answers (2)

restless1987
restless1987

Reputation: 1598

Maybe this helps you:

You can flip between $true and $false just by telling it -not to be

-not $true brings back $false

-not $false brings back $true

So

    foreach ($b in $bv) {
if ($t0List -contains $b.ServerName) {
    $b.Tier0 = -not ($b.Tier0) 
   }
}

or 

    foreach ($b in $bv) {
if ($t0List -contains $b.ServerName) {
    $b.Tier0 = $true
    }
}

should work

Upvotes: 0

briantist
briantist

Reputation: 47832

There's no need to use something like replace, just assign the value with =:

foreach ($b in $bv) {
    if ($t0List -contains $b.ServerName) {
        $b.Tier0 = $true
    }
}

Want to simplify it even more? Just assign it the result of your -contains:

foreach ($b in $bv) {
    $b.Tier0 = $t0List -contains $b.ServerName
}

Upvotes: 2

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