Laravel中的匿名函数vs String文字控制器

Question

What is difference between the fellowing two route codes?

One is without controller ans seccond one has a controller:

• Version 1

  Route::get('/', function () {
      return view('front/index');
  })
  

• Version 2

  Route::get ('/main', 'MainController@index');
  

Answer 1

Version 1 Returns route ‘/‘ along with a view found in ‘front/index’

Version 2 Returns route at ‘/main’