title: Which is more optimal: `new` or `calloc`?
body: <p>I use <code>calloc</code>, I've read that, <code>calloc</code> internally calls <code>new</code> handler, so what should I go for? </p>
  
  <p>Should I use <code>new</code> operator(which allocate fast) or <code>calloc</code>(which can allocate and initialize memory as well)?</p>