LASS.COMP 
#&gt;   ----------------------------------
#&gt;       v1     character     factor   
#&gt;   ----------------------------------
#&gt; </div><div class='input'><span class='fu'>diffdf</span>(<span class='no'>DF1</span> , <span class='no'>DF2</span> , <span class='kw'>keys</span> <span class='kw'>=</span> <span class='st'>"id"</span>, <span class='kw'>strict_factor</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>)</div><div class='output co'>#&gt; <span class='message'>NOTE: Variable