title: Can anyone make me understand this MATLAB code?
body: <p>Here is a file:
  <a href="http://www.ee.columbia.edu/~dpwe/e6820/matlab/stft.m" rel="nofollow">http://www.ee.columbia.edu/~dpwe/e6820/matlab/stft.m</a></p>
  
  <p>and the lines:</p>
  
  <pre><code>else
    win = w;
    w = length(w);
  end
  </code></pre>
  
  <p>Why <code>w</code> has assigned <code>length(w)</code> if <code>w</code> is not used anymore in code?</p>