title: Explicit template instantiation - when is it used?
body: <p>After few weeks break, I'm trying to expand and extend my knowlege of templates with the book <em>Templates &ndash; The Complete Guide</em> by David Vandevoorde and Nicolai M. Josuttis, and what I'm trying to understand at this moment is explicit instantiation of templates.</p>
  
  <p>I don't actually have a problem with the mechanism as such, but I can't imagine a situation in which I would like or want to use this feature. If anyone can explain that to me I will be more than grateful.</p>