class.ilADTBooleanDefinition.php

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<?php

class ilADTBooleanDefinition extends ilADTDefinition
{               
        // comparison
                
        public function isComparableTo(ilADT $a_adt)
        {
                // has to be boolean-based
                return ($a_adt instanceof ilADTBoolean);
        }       
}

?>