Associated Types</h4>
Each model of this concept presumes the
existence of a corresponding type modeling the 
<a href="#saving_interface">Saving Archive Concept</a>.
The purpose of an instance of this concept is to convert a sequence of bytes
generated by this corresponding type to a set of C++ data structures 
equivalent to the original.  
<h4>Valid Expressions</h4>
<dl>
  <dt><h4><code>
    LA::is_saving
  </code></h4></dt>
  <dd>
    Returns the Boost MPL Integral Constant type boost::mpl::bool_&lt;false