On Thu, Apr 12, 2018 at 4:10 AM, bonpi bonpi <golangori...@gmail.com> wrote:
> I know that there are no functional differences in them by duck typing.
> But since the Response package already has dependency on the io package(for
> example,http.File), so it does not have to lose its dependency,
> and I do not think that "Write([]byte)(int,error)" of ResponseWriter has a
> broader meaning so that many other "String() string" declarations do not
> embed fmt.Stringer.
> Why does not http.ResponseWriter embed io.Writer?
> I think that the reason will help us understand the interface of Golang more
> deeply.

I don't think there was any special reason.  The end result is exactly
the same whether the interface says `io.Writer` or `Write([]byte)
(int, error)`.  Using an explicit Write method is only slightly
longer, and is, if anything, more clear.


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