PowerShell functions that return true/false

Question

I am pretty new with using PowerShell and was wondering if anyone would have any input on trying to get PowerShell functions to return values.

I want to create some function that will return a value:

 Function Something
 {
     # Do a PowerShell cmd here: if the command succeeded, return true
     # If not, then return false
 }

Then have a second function that will only run if the above function is true:

 Function OnlyTrue
 {
     # Do a PowerShell cmd here...
 }

Answer 1

Don't use True or False, instead use $true or $false

function SuccessConnectToDB {
 param([string]$constr)
 $successConnect = .\psql -c 'Select version();' $constr
    if ($successConnect) {
        return $true;
    }
    return $false;
}

Then call it in a nice clean way:

if (!(SuccessConnectToDB($connstr)) {
    exit  # "Failure Connecting"
}