No gocv examples in samples path?

[songtianyi]

I'am wondering how swig work.
Could you write some tutorials for this? It's much helps for contribution.
We know, in c wrapper we just import opencv package. I'm not sure it will work for gocv package.
I try to run following code, a lot of Warning occurred.

package main
import (
	"github.com/lazywei/go-opencv/gocv"
	"fmt"
)

func main() {
	a := gocv.NewGcvPoint3f32(float64(43.3))
	fmt.Println(a)
}

What go run did for us?