package main

import (
	"code.google.com/p/go-tour/tree"
	"fmt"
)
func walk(t *tree.Tree, ch chan int) {
    if t != nil {
    walk(t.Left, ch)
    ch <- t.Value
    walk(t.Right, ch)
    }
}

// Walk walks the tree t sending all values
// from the tree to the channel ch.
func Walk(t *tree.Tree, ch chan int) {
	walk(t, ch)
	close(ch)
}

// Same determines whether the trees
// t1 and t2 contain the same values.
func Same(t1, t2 *tree.Tree) bool

func main() {
	t := tree.New(1)
	ch := make(chan int)
	go Walk(t, ch)
	fmt.Printf("%v\n", t)
	for i := range ch {
		fmt.Printf("%d, ", i)
	}
	fmt.Println()
}