<div dir="ltr"><div class="gmail_extra"><span style="font-family:arial,sans-serif;font-size:12.727272033691406px">&gt;&gt; | myBlock |</span><br style="font-family:arial,sans-serif;font-size:12.727272033691406px"><span style="font-family:arial,sans-serif;font-size:12.727272033691406px">&gt;&gt; myBlock := [ : arg1 : arg2 | ].</span><br style="font-family:arial,sans-serif;font-size:12.727272033691406px">
<span style="font-family:arial,sans-serif;font-size:12.727272033691406px">&gt;&gt; myBlock value: &#39;hello&#39; value: &#39;there&#39;</span><br></div><div class="gmail_extra"><span style="font-family:arial,sans-serif;font-size:12.727272033691406px"><br>
</span></div><div class="gmail_extra"><span style="font-family:arial,sans-serif;font-size:12.727272033691406px">nil</span></div><div class="gmail_extra"><span style="font-family:arial,sans-serif;font-size:12.727272033691406px"><br>
</span></div><div class="gmail_extra"><span style="font-family:arial,sans-serif;font-size:12.727272033691406px">Because the block isn&#39;t returning a value and the last line is calling the block.</span></div></div>