I think it's probably the one that is a type annotation using [@@deriving ] on your type declaration. You get functions derived by the compiler for you. 

**Dont use piqi!** It's really terrible code. 

On Sat, Feb 10, 2018 at 1:05 PM, <picflo_2@web.de> wrote:
Hi,

I want to use protobuf for an microservice environment where some Services are weiten in ocaml.
Looking at the different available solutions, I was wondering whether there is a single one considered the most mature and stable?

Thanks a lot,
Florian

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