The Free On-line Dictionary of Computing (30 December 2018):

GNU E

   A persistent C++ variant

   Version 2.3.3

   compiler

   (ftp://ftp.cs.wisc.edu/exodus/E/).

   GNU E is a persistent, object oriented programming language
   developed as part of the Exodus project.  GNU E extends C++
   with the notion of persistent data, program level data objects
   that can be transparently used across multiple executions of a
   program, or multiple programs, without explicit input and
   output operations.

   GNU E's form of persistence is based on extensions to the
   C++ type system to distinguish potentially persistent data
   objects from objects that are always memory resident.  An
   object is made persistent either by its declaration (via a new
   "persistent" storage class qualifier) or by its method of
   allocation (via persistent dynamic allocation using a special
   overloading of the new operator).  The underlying object
   storage system is the Exodus storage manager, which provides
   concurrency control and recovery in addition to storage for
   persistent data.

   restriction: Copyleft; not all run-time sources are available
   (yet)

   requires:	release 2.1.1 of the Exodus storage manager

   E-mail: .

   (1993-01-20)