The code in this repository is written for the course on GRPC [golang] on udemy. Course name - gRPC [Golang] Master Class: Build Modern API & Microservices
The directory structure is pretty self explanatory. You have a greet folder which has a greet server and greet client. Then there is the greetpb folder, which contains the .proto file as well as the generated go file.
Same structure is followed by the calculator service as well.