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go - cannot use make(IntChannel) (value of type IntChannel) as Consumer value in variable declaration

We have a below scenario:

package main

type Consumer chan interface {
    OpenChannel()
    CloseChannel()
}

type IntChannel chan int
type StringChannel chan string

func (c IntChannel) OpenChannel() {

}

func (c IntChannel) CloseChannel() {

}

func (c StringChannel) OpenChannel() {

}

func (c StringChannel) CloseChannel() {

}

func main() {

    var dataChannel Consumer = make(IntChannel)
    for data = range dataChannel {

    }
}

Goal is to range on dataChannel.

var dataChannel Consumer = make(IntChannel) gives error: cannot use make(IntChannel) (value of type IntChannel) as Consumer value in variable declaration

We pick int channel or string channel based on a given config value at runtime.

Read this answer, but not much help.


How to range on a channel type that picks either int data or string data?

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