Building H2O - https://blog.ksub.org/bytes/2016/03/13/building-ho/

h2o.go

package main

import "fmt"

type H struct { seq int }
type O struct { seq int }

type H2O struct {
    h1, h2 H
    o O
}

func (h2o H2O)String() string {
    return fmt.Sprintf("H(%d)O(%d)H(%d)", h2o.h1.seq, h2o.o.seq, h2o.h2.seq)
}

func main() {
    chH := make(chan H, 10)
    chO := make(chan O, 10)

    go func() {
        for i:=1; ; i++ {
            chH <- H{i}
        }
    }()

    go func() {
        for i:=1; ; i++ {
            chO <- O{i}
        }
    }()


    chH2O := make(chan H2O, 10)
    go func() {
        for {
            h1 := <-chH
            h2 := <-chH
            o  := <-chO

            chH2O <- H2O{h1, h2, o}
        }
    }()


    for i:=0; i<5; i++ {
        h2o := <-chH2O
        fmt.Println(h2o)
    }
}