The case for a MustWriteJson helper ?

[ant0ine]

writer.WriteJson(...) returns an error. The JSON serialization can fail for many reasons (eg: NaN, channel, complex, ...).

If such error is a valid possibility in the program, if the JSON API deals with data that can contain sources of serialization failures, then, the regular error handling is appropriate:

                        err := w.WriteJson(...)
                        if err != nil {
                                // the following, or any other appropriate error handling
                                rest.Error(w, err.Error(), http.StatusInternalServerError)
                                return
                        }

But if a serialization error is considered a program bug, worth a stop in the processing of the request, then it could be a valid use of panic:

                        err := w.WriteJson(...)
                        if err != nil {
                             panic(err.Error())
                        }

This last piece of code could be provided by the framework like this: func MustWriteJson(w ResponseWriter, v interface{})

[wingyplus]

+1