Thank you, Gustaf.&nbsp; Makes sense.<br><br>Is there anyway to call a method besides doing a &quot;puts&quot;.<br><br>Putting in:<br>&nbsp;
s1 push a<br>results in an error, however I can do:<br>puts [s1 pop]<br><br>I would think that there would be a way to call a method without outputiing.&nbsp; Is there one?<br>