title: How can I determine if a vector contains dates in MATLAB?
body: <p>Can you determine if a vector contains dates?</p>
  
  <p>The vector I have has dates in the format 'yyyy-mm-dd'.</p>
  
  <p>I have seen the <code>isdatetime</code> function but it doesn't appear to work for me. I think it's because the vector is full of dates and not date times.</p>