<p>Functions <code><ahref="../reference/mo_property.html">is_gram_negative()</a></code> and <code><ahref="../reference/mo_property.html">is_gram_positive()</a></code> as wrappers around <code><ahref="../reference/mo_property.html">mo_gramstain()</a></code>. They always return <code>TRUE</code> or <code>FALSE</code> (except when the input is <code>NA</code> or the MO code is <code>UNKNOWN</code>), thus always return <code>FALSE</code> for species outside the taxonomic kingdom of Bacteria. If you have the <code>dplyr</code> package installed, they can even determine the column with microorganisms themselves inside <code>dplyr</code> functions:</p>
<spanclass="co">#> NOTE: Using column `mo` as input for 'x'</span></pre></div>
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<li><p>Functions <code><ahref="../reference/like.html">%not_like%</a></code> and <code><ahref="../reference/like.html">%not_like_case%</a></code> as wrappers around <code><ahref="../reference/like.html">%like%</a></code> and <code><ahref="../reference/like.html">%like_case%</a></code>. The RStudio addin to insert the text " %like% " as provided in this package now iterates over all like variants. So if you have defined the keyboard shortcut Ctrl/Cmd + L to this addin, it will first insert <code><ahref="../reference/like.html">%like%</a></code> and by pressing it again it will be replaced with <code><ahref="../reference/like.html">%not_like%</a></code>, etc.</p></li>