| In Jscheme 1.0 to 1.4, symbols were implemented as Strings. In 1.5, we
add a Symbol class, with a field for the global value. This makes
global lookup faster, but limits us to only one global environment.
author: Peter Norvig, Copyright 1998, peter@norvig.com, license author: subsequently modified by Jscheme project members author: licensed under zlib licence (see license.txt) |