Protobufs do not contain any explicit support for maps/dictionaries. Sorry.
experimental_map_key was added at one point by someone who was considering
adding such support but as yet it hasn't happened. Normally people
represent maps in protocol buffers by using repeated key/value pairs.
On Sun,
Hello,
I've been experimenting with protocol buffers on appengine, using
2.3.0. I am trying to basically find the fastest way to serialize a
dictionary, and would like to see if protobuf can improve on
performance I'm seeing with other methods (pickle - ick, simplejson -
better, repr - best so far