title: How to insert a conditional_variable object into a Vector?
body: <p>conditional_variable is not CopyConstructible, MoveConstructible, CopyAssignable, MoveAssignable.</p>
  
  <p>Can we call like this</p>
  
  <pre><code>vector&lt;conditional_variable&gt; cond;
  
  conditional_variable c1;
  conditional_variable c2;
  cond.push_back(c1);
  cond.push_back(c2);
  </code></pre>
  
  <p>What is the right way to proceed in these scenarios </p>