# File src/rexml/functions.rb, line 257
                def Functions::boolean( object=nil )
                        if object.kind_of? String
                                if object =~ /\d+/u
                                        return object.to_f != 0
                                else
                                        return object.size > 0
                                end
                        elsif object.kind_of? Array
                                object = object.find{|x| x and true}
                        end
                        return object ? true : false
                end