title: How to pass parameters to a variadic function, dynamically?
body: <p>Consider some variadic function <code>foo(int...args)</code>.</p>
  
  <p>I want to be able to call it dynamically. That is, the parameters will be given to me through some simple data structure like an array/vector etc (doesn't really matter).</p>
  
  <p>How can I pass them to call <code>foo()</code>? </p>