isNullOrInvalid( powerobject ref ) return boolean

The purpose of the isNullOrInvalid if to offer a more concise and less error prone alternative for coding object reference invalidity checks, like :

if isnull( ref ) or not isvalid( ref ) then return -1

by :

if #.isNullOrInvalid( ref ) then return -1



Last edited May 27, 2015 at 10:50 AM by domangep, version 3