[zbjornson]

Thanks for explaining that and for the reference. It seems like a lot of overhead for a protocol that is designed to be cheap...

[pherl]

There are also wrapper well known types that you can fallback to (in wrappers.proto), when you need to distinguish between, say empty string and null.

[dyoo1979]

https://github.com/google/protobuf/blob/master/src/google/pr...