Cute powershell trick

Don't know if this is common practice and I've just never seen it before, or it has some fatal flaw i'm unaware of. I frequently want to set a boolean value to some other boolean value, but the other boolean value may actually be boolean or $null and I want to change the $null to some default boolean value. I used to handle this by doing:

if ([string]::IsNullOrEmpty($otherBool)) {
    $myBool = $false
} else {
    $myBool = $otherBool
}

which is a lot of typing. Now I found I can do this instead:

# default to false if $otherBool is $null
$myBool = $otherBool -or $false
# default to true if $otherBool is $null
$myBool = $otherBool -or $true

When $otherBool is one of the objects below the $otherBool -or $false resutls are:

• $null => $false
• integer => 0 result is $false, any non-zero result is $true
• string => empty string result is $false, any string with actual contents result is $true
• float => seems to be same as integer
• hash => always results true even for empty hash @{}
• array => null array @() or @($null) is false, everything else results in $true