I would recommend reading up on how to implement Go interfaces. The only requirement required to satisfy the io.Writer interface is a method Write([]byte)(int,error). If this method is present, Go can then interpret your struct as a io.Writer.
By itself, io.Writer provides no functionality only a definition. That is left to the struct to fulfill. On Friday, April 28, 2023 at 4:16:24 PM UTC-5 Nitin Muppalaneni wrote: > Is there a reason why `http.ResponseWriter` does not include io.Writer > directly and instead has the `Write([]byte) (int, error)` method? Why did > you choose to do it this way? I can see that it adds a dependency on the io > package. Was that the concern? > > And more generally, when would you recommend not using composition of > interfaces? > > Thanks > Nitin > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/f8b6844a-72af-460f-a29a-4bb2d9e60a96n%40googlegroups.com.
