On Sunday, July 31, 2016 at 11:46:28 PM UTC+8, bradfitz wrote:
>
> Interface values are comparable. If they have different concrete types,
> they compare to false.
>
> See https://golang.org/ref/spec#Comparison_operators
>
I mean this:
> package main
>
> import "fmt"
>
> type IA interface {
> A()
> }
>
> type IAB interface {
> A()
> B()
> }
>
> type IAC interface {
> A()
> C()
> }
>
> type T struct{}
> func (t T) A(){}
> func (t T) B(){}
> func (t T) C(){}
>
> func main() {
> var t T
> var a IA = t
> var ab IAB = t
> var ac IAC = t
>
> fmt.Println(a == ab) // true
> fmt.Println(ac == ab) // error: mismatched types IAC and IAB
> }
>
>
>
> On Sat, Jul 30, 2016 at 10:33 PM, T L <tapi...@gmail.com <javascript:>>
> wrote:
>
>> Is it essential?
>>
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>
>
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