er.decommit(2)

# The block should now contain only the last two values
block:
  var bloc = buffer.read
  assert bloc[0] == 218
  assert bloc[1] == 56</pre>
</p></blockquote>
</p>
  <div class="section" id="7">
<h1><a class="toc-backref" href="#7">Types</a></h1>
<dl class="item">
<a id="BipBuffer"></a>
<dt><pre><a href="bipbuffer.html#BipBuffer"><span class="Identifier">BipBuffer</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span> <span class="Other">=</span> 