go 判断两棵树内容是否一致

type Tree struct {
    Left  *Tree
    Value int
    Right *Tree
}

package main
import "golang.org/x/tour/tree"
import "fmt"
// Walk walks the tree t sending all values
// from the tree to the channel ch.
func Walk(t *tree.Tree, ch chan int) {
  _ts := make(chan *tree.Tree, 100)
  _ts <- t
OuterLoop:
  for {
    _f1 := func(_tmp *tree.Tree) {
      fmt.Println(_tmp.Value)
      ch <- _tmp.Value
      for _, v := range []*tree.Tree{_tmp.Left, _tmp.Right} {
        if v != nil {
          _ts <- v
        }
      }
    }
    select {
    case _tmp := <-_ts:
      _f1(_tmp)
    default:
      fmt.Println("break")
      break OuterLoop
    }
  }
}
// Same determines whether the trees
// t1 and t2 contain the same values.
func Same(t1, t2 *tree.Tree) bool {
  return true
}
func main() {
  _t1 := tree.New(1)
  _c1 := make(chan int, 100)
  Walk(_t1, _c1)
  _t2 := tree.New(1)
  _c2 := make(chan int, 100)
  Walk(_t2, _c2)
  fmt.Println(_c)
}