mem.Rd</code></div>
    </div>

    <div class="ref-description">
    <p>For a single dataframe, summarise the memory usage in each column. 
If two dataframes are supplied, compare memory usage for columns appearing 
in both dataframes.  For grouped dataframes, summarise the memory usage separately 
for each group.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">inspect_mem</span><span class="op">(</span><span class="va">df1</span>,