main.go

package main

import "fmt"

type NewApp struct {
	Port  int
	Debug bool
}

func (appCfg NewApp) Create() *App {
	a := &App{
		Cfg: appCfg,
	}
	return a
}

type App struct {
	Cfg NewApp
}

func (app *App) Run() {
	fmt.Printf("app is runnning on port %d\n", app.Cfg.Port)
}

func main() {
	myApp := NewApp{Debug: false, Port: 8080}.Create()
	myApp.Run()
}