mytotaller.go

package news

import "store"

type Totaller interface {
	Subtotal() float64
}

type NewsfeedRenderable struct {}

func (n *NewsfeedRenderable) RenderPage(t Totaller) {
}

// Calling the original run application function
func RunNewsfeed() {
	// cannot use NewsfeedRenderable literal (type *NewsfeedRenderable) as type Renderable in argument to store.RunApplication:
	// *NewsfeedRenderable does not implement Renderable (wrong type for RenderPage method)
	//  have RenderPage(Totaller)
	//  want RenderPage(store.Totaller)
	store.RunApplication(nil, &NewsfeedRenderable{})
}