best way to check for empty data?

[jamie]

is there a better way than this to check if there is no data in a field?

ifThen(string\length(account.phoneNumber) > 0,

[victor]

if (!account.phoneNumber){
    CODE
}

For example in Administration > Formula Sandbox you can run:

if (!account.phoneNumber){
    $accountPhoneNumber = 'is empty'
}
output\printLine($accountPhoneNumber);