The fact that https://github.com/golang/go/issues/5083 still hasn't been sorted out means that it's hard to explain this to people using officially sanctioned terminology. I usually end up just using the phrase "reference types" along with some further description of what I mean (in particular to distinguish from something like C++ references). It would be quite helpful if we could nail this down at some point. Having a good spec-level description means that we shouldn't have to talk about machine words or method tables to explain what values are.
We could even make up a new term if we don't like the baggage of "reference". (As I joked in a previous thread, "goference".) On Tue, Apr 18, 2017 at 2:21 PM, Ian Lance Taylor <i...@golang.org> wrote: > On Tue, Apr 18, 2017 at 2:13 PM, st ov <so.qu...@gmail.com> wrote: >> I read everything is pass-by-value in Go, is that correct? >> What does it encompass? Are there any exceptions? > > There are no exceptions. But it does require a clear understanding of > what Go means by a value. > >> Does that mean the following: >> >> int passes full integer byte value >> float64 passes full float byte value >> string passes full string []byte value > > Not really, a string passes a pointer (to an immutable []byte) and a length. > >> slice passes pointer value to slice in memory > > Not really, a slice passes a pointer to a backing array, a length, and > a capacity. > >> map passes pointer value to map in memory >> func passes pointer value to func in memory >> interface passes pointer value to interface object in memory > > Almost, an interface passes a pointer to a method table and a pointer value. > > See https://research.swtch.com/godata . > > Ian > > -- > 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. > For more options, visit https://groups.google.com/d/optout. -- 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. For more options, visit https://groups.google.com/d/optout.
