title: Difference between const auto and auto for lambdas
body: <p>Is there any (useful?) difference between:</p>
  
  <pre><code>auto test = [..](..){..};
  </code></pre>
  
  <p>and</p>
  
  <pre><code>const auto test = [..](..){..};
  </code></pre>
  
  <p>?</p>