Six stars of AngularJS - Part 2

// sample 1
$provide.factory('movieService', movieService);
function movieService() {
    return { // service
      getAllMovies: getAllMovies
    };

    function getAllMovies() {
	    return ['engMovie1', 'engMovie2', 'engMovie3'];
    }
}

// sample 2
var app = angular.module('app');
app.factory('movieService', movieService);
function movieService() {
    return { // service
      getAllMovies: getAllMovies
    };

    function getAllMovies() {
	    return ['engMovie1', 'engMovie2', 'engMovie3'];
    }
}

    // sample 3
    app.service('movieService', movieService);

    function movieService() {
        this.getAllMovies = getAllMovies;

        function getAllMovies() {
            return ['engMovie1', 'engMovie2', 'engMovie3'];
        }
    }

    // sample 4 
    app.value('movieService', movieService()); // Note : function is invoked

    function movieService() {
        return {
            getAllMovies: getAllMovies
        }

        function getAllMovies() {
            return ['engMovie1', 'engMovie2', 'engMovie3'];
        }
    }

   // sample 5
   app.value('movieService', { getAllMovies: getAllMovies});

   // sample 6
   app.value('movieService', "sample service");

// sample 7
app.constant('PI', 3.14);