title: How can I create a vector containing the days of the week?
body: <p>I need a vector containing the days of the week very often, but I always type it out:</p>
  
  <pre><code>days.of.week &lt;- c("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday")
  </code></pre>
  
  <p>This is pretty easy because it's short, but there's always the possibility of typos. Is there a way to create a vector containing the days of the week programmatically?</p>