GraphQL has wonderful features, the most charming features omparing to Restful API are:
Here, I will take a deep look to know how these features are implemented. Before taking an eye in the framework code, we should make a reflection first, how could these features be implemented.
This blog investigates the error types in golang and summerizes a best practice for using errors.
This page is next to the client side details, Request Sending Precedures in GRPC Client Side. There are more details in it, which means this page will much more brief than previous one. Still, I focus on the core logic, ignoring like interceptors.
In cpp, there are concepts of reference , value, right value and left value. The go is very similar with some idolisms of C++, for example we cannot copy the iostream in cpp, as the same io in go always passed by reference with the help of interface.
However, go doesn’t have reference acurrately, as it only has concepts about value and pointer. The reference in title should be called pointer also.
C++ has a dilicated way to control what happened when copying and moving, but golang doesn’t have such concepts, which means the complexities are hidden in the compiler and runtime.
Let’s focus on the copy behavior of basic types in golang, we can see that when copying, map, chan and context are treated as reference, the origin one and copied one share the same one. It’s worthy to know why some types are copied by reference instead of value.
In go, there are some cases when we need to check functions in some cases:
However, function type in Go is not addressable and not comparable.