&gt; but in Ruby this would equally easy been done with &quot;if [2,4,5,&quot;hello&quot;,42,3.14].include?(x)&quot;.<p>But that isn&#x27;t the same is it. That&#x27;s only a related feature because Ruby doesn&#x27;t have first class Junctions.<p>&gt; I wonder if it will gain enough traction from non perl programmers.<p>These days people have been taught to be arrogant. To assume their language is the best. This is what makes things a tough challenge.