The protobuf3 language guide says If you want to create an associative map as part of your data definition, protocol buffers provides a handy shortcut syntax:
map<key_type, value_type> map_field = N; ...where the key_type can be any integral or string type (so, any scalar <https://developers.google.com/protocol-buffers/docs/proto3?hl=en#scalar> type except for floating point types and bytes). The value_type can be any type. Why aren't enums allowed as map keys? Defining an enum already requires that we provide a mapping from each enum value to a unique int. -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
