title: How to delete multiple values from a vector?
body: <p>I have a vector like: <code>a = c(1:10)</code> and I need to remove multiple values, like: <code>2, 3, 5</code></p>
  
  <p>How to delete those numbers (they are <strong>NOT</strong> the positions in the vector) in the vector?</p>
  
  <p>at the moment i loop the vector and do something like: </p>
  
  <pre><code>a[!a=NUMBER_TO_REMOVE]
  </code></pre>
  
  <p>But I think there is a function that does it automatically.</p>