Immediate Value object reference variable ruby The one in ((variable|Variable)) that not ((reference|Reference)) but actual value is stored. Only '((|Fixnum|))' and ((|nil|))/((|true|))/((|false|)) are immediate values in present ((Ruby)). However, there's no law against another ((Ruby)) which ((|Fixnum|)) is not immediate value, and also you can regard the all values on the model as a ((reference|Reference)) to the ((object|Object)).