AngularJS - different ways to create controllers and services, why?

Question

I keep seeing different examples of creating controllers and services in AngularJS and I\'m confused, can anyone explain to me the differences between the two approaches?

Answer 1

My preferred way of creating controllers and directives is as following:

/**
* SomeCoolModule.controller.js
*/

(function(){
'use strict';

    angular.module('app.modals.SomeCoolModule').controller('SomeCoolModuleController', SomeCoolModuleController);

    AddFlowCurveModalController.$inject =
        [
            '$scope',
            '$filter',
            '$log',
        ];

    function SomeCoolModuleController($scope, $filter, $log) {
        /* controller body goes here */
    }
})();

PS: no global namespace pollution is taking place above due to IIFE.