>From an implementation standpoint they are passed by reference (The
representation is actually a pair (pointer to vtable, pointer to
object), but from a semantic standpoint the difference still matters,
because e.g. if the original value was a struct, it still can't be
mutated. There are use cases for what Volker is asking about in the
standard library, even:
package json // import "encoding/json"
func Unmarshal(data []byte, v interface{}) error
Unmarshal parses the JSON-encoded data and stores the result in the value
pointed to by v. If v is nil or not a pointer, Unmarshal returns an
InvalidUnmarshalError.
...
Quoting Robert Engels (2018-11-19 09:57:12)
> Aren't all interface references passed as a pointer? It is a var that
> contains a pointer to the struct and a concrete type of the struct?
>
> On Nov 19, 2018, at 8:45 AM, Volker Dobler
> <[1][email protected]> wrote:
>
> > Is there a way to force "SomeFunction" to take pointers only at
> compile time?
> No, sorry.
> V.
>
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