To be clear: You sent a follow-up E-Mail to your original code, to replace
`int` with `[]byte`. That substitution is, of course, necessary to make the
code compile. So, specifically, this compiles fine:
package main
import (
"fmt"
)
type byteview interface{string | []byte}
type ByteView[T byteview] struct {v [0]T}
func (bv ByteView[T]) Write(v T) (int, error) {
return 0, nil
}
type Writer[T byteview] interface {
Write(bs T)(int, error)
}
type ioWriter = Writer[[]byte]
func main() {
fmt.Println("Hello, playground")
}
On Fri, Nov 12, 2021 at 6:21 PM Axel Wagner <axel.wagner...@googlemail.com>
wrote:
> Why not? The comment "[]byte does not satisfy comparable" seems
> irrelevant, as you don't use that constraint anywhere. It seems pretty
> well-defined, if strange and pointless, code.
>
> On Fri, Nov 12, 2021 at 6:20 PM tapi...@gmail.com <tapir....@gmail.com>
> wrote:
>
>> fine? It should not.
>>
>> On Friday, November 12, 2021 at 3:04:20 PM UTC+8
>> axel.wa...@googlemail.com wrote:
>>
>>> Please ask an actual question, don't just post some code.
>>> FTR the code you posted (with the substitution you suggest) compiles and
>>> runs fine using gotip.
>>>
>>> On Fri, Nov 12, 2021 at 6:18 AM tapi...@gmail.com <tapi...@gmail.com>
>>> wrote:
>>>
>>>> sorry, a mistake, "int" -> "[]byte".
>>>>
>>>> On Friday, November 12, 2021 at 1:08:50 PM UTC+8 tapi...@gmail.com
>>>> wrote:
>>>>
>>>>>
>>>>> package main
>>>>>
>>>>> import (
>>>>> "fmt"
>>>>> )
>>>>>
>>>>> type byteview interface{string | int}
>>>>>
>>>>> type ByteView[T byteview] struct {v [0]T}
>>>>>
>>>>> func (bv ByteView[T]) Write(v T) (int, error) {
>>>>> return 0, nil
>>>>> }
>>>>>
>>>>> type Writer[T byteview] interface {
>>>>> Write(bs T)(int, error)
>>>>> }
>>>>>
>>>>> type ioWriter = Writer[[]byte] // []byte does not satisfy comparable
>>>>>
>>>>> func main() {
>>>>> fmt.Println("Hello, playground")
>>>>> }
>>>>>
>>>> --
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>>>> .
>>>>
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>
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