Go에서 일반 채널을 통해 여러 유형을 보낼 수 있나요?

<code class="go">package main

import (
    "fmt"
)

type pet interface {
    Speak()
}

type dog struct{}

func (d dog) Speak() {
    fmt.Println("Woof!")
}

type cat struct{}

func (c cat) Speak() {
    fmt.Println("Meow!")
}

func main() {
    greet := make(chan pet)
    go func() {
        greet <- &dog{}
        greet <- &cat{}
    }()

    for p := range greet {
        p.Speak()
    }
}</code>

<code class="go">package main

import (
    "fmt"
    "reflect"
)

func main() {
    ch := make(chan interface{})
    go func() {
        ch <- "this is it"
    }()

    p := <-ch
    fmt.Printf("Received a %q", reflect.TypeOf(p).Name())
}</code>

<code class="go">package main

import (
    "fmt"
)

func main() {
    ch := make(chan interface{})
    go func() {
        ch <- "text"
        ch <- 1234.56
    }()

    for {
        p := <-ch
        switch p := p.(type) {
        case string:
            fmt.Printf("Got a string %q", p)
        case int, int8, int16, int32, int64:
            fmt.Printf("Got an int %d", p)
        case float32, float64:
            fmt.Printf("Got a float %g", p)
        default:
            fmt.Printf("Unknown type %T with value %v", p, p)
        }
    }
}</code>