title: Disadvantages of a <std.h> file that brings in all std headers?
body: <p>I find long sequences of standard includes annoying:</p>
  
  <pre><code>#include &lt;vector&gt;
  #include &lt;string&gt;
  #include &lt;sstream&gt;
  #include &lt;iostream&gt;
  </code></pre>
  
  <p>Considering these header files change only very rarely, is there a reason why I should not make a "std.h" file #including all std headers and just use that everywhere?</p>