title: Subset a dataframe using multiple conditions
body: <p>How to subset a dataframe using multiple conditions?</p>
  
  <p>This does exactly the opposite, and I need to include "!"</p>
  
  <pre><code>x&lt;-c("A", "B", "C", "D", "E")
  df &lt;- subset(df, subset = col_name %in% x)
  </code></pre>