title: Is there any difference betwen [=] and [&] in lambda functions?
body: <p>I was studying lambda function in c++11 recently. But I don't know if there is any difference between <code>[=]</code> and <code>[&amp;]</code>. If there is, what the difference is? </p>
  
  <p>And in these two situation, does <code>this</code> in lambda body has any difference?</p>