wolffd@0: function hash_add(key, val, fname)
wolffd@0: % HASH_ADD Append key,value pair to end of hashtable stored in a file
wolffd@0: % function hash_add(key, val, filename)
wolffd@0: %
wolffd@0: % See hash_lookup for an example
wolffd@0: 
wolffd@0: if ~exist(fname, 'file')
wolffd@0:   % new hashtable
wolffd@0:   hashtable.key{1} = key;
wolffd@0:   hashtable.value{1} = val;
wolffd@0: else
wolffd@0:   %hashtable = importdata(fname);
wolffd@0:   %hashtable = load(fname, '-mat');
wolffd@0:   load(fname, '-mat');
wolffd@0:   Nentries = length(hashtable.key);
wolffd@0:   hashtable.key{Nentries+1} = key;
wolffd@0:   hashtable.value{Nentries+1} = val;
wolffd@0: end
wolffd@0: save(fname, 'hashtable', '-mat');