title: I want to have a good understanding of the use of return *this in c++
body: <p>I want to have a good understanding of the use of <code>return *this</code> and take of instance we have </p>
  
  <pre><code>coord&amp; coord::operator=(const coord&amp; other)
  {
      if (this== &amp;other)
  }
  </code></pre>
  
  <p>My concern here is the use of <code>this</code> and the use of <code>return *this</code></p>