With interface{} it has to be a type check at
runtime: https://play.golang.org/p/t2jip9E__F1
Matt
On Monday, March 26, 2018 at 12:34:34 PM UTC-5, 刘焱 wrote:
>
> 'chan interface {}' dosen't work.
>
> package main
>
> import "fmt"
>
> type ChannelWrapper struct {
> Channel chan interface{}
> }
>
> func main() {
> x := make(chan int)
> y := ChannelWrapper { x }
> fmt.Println(y)
> }
>
> Build this will yield
> cannot use x (type chan int) as type chan interface {} in field value
>
>
> Cast x as follow:
> chan interface{} (x)
>
> Will yield
> cannot convert x (type chan int) to type chan interface {}
>
>
>
> 在 2018年3月24日星期六 UTC+8上午1:41:59，matthe...@gmail.com写道：
>>
>> An empty interface var can hold any type, so you could have a chan
>> interface{} then use an interface type assertion when you read a value.
>>
>> Matt
>
>
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