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<div ng-controller="navCtrl">
   <span>{{user}}</span> <!-- won't be updating -->
   <div ng-controller="loginCtrl">
      <span>{{user}}</span>
      <input ng-model="user"></input> <!-- changes update only loginCtrl scope -->
   </div>
</div>

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module.service = function(name, Class) {
    provider.provide(name, function() {
        this.$get = function($injector) {
            return $injector.instantiate(Class);
        };
    });
}

module.factory = function(name, factory) {
    provider.provide(name, function() {

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module.provider('greeter3', function() {
    var salutation = 'Hello';
    this.setSalutation = function(s) {
        salutation = s;
    }

    function Greeter(a) {
        this.greet = function() {
            return salutation + ' ' + a;
        }

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module.factory('greeterFactory', function(a) {
    function Greeter(a) {
        this.greet = function() {
            return 'Hello ' + a;
        }
    }
    
    return new Greeter(a);
});

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module.factory('b', function(a) {
    return a*2;
});

function Controller(b) {
    expect(b).toEqual(246);
}

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module.value('a', 123);
module.constant('A', 321); //can't modify with a decorator

function Controller(a, A) {
    expect(a).toEqual(123);
    expect(A).toEqual(231);
}

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var underscore = angular.module('underscore', []);
underscore.factory('_', function() {
    return window._; //Underscore must already be loaded on the page
});

var app = angular.module('app', ['underscore']);

app.controller('MainCtrl', ['$scope', '_', function($scope, _) {
    init = function() {
        _.keys($scope);

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app.controller('MainCtrl', ['$scope', '$timeout', function($scope, $timeout){
    $timeout(function() {
        console.log($scope);
    });
}]);

//another best bractice approach with $inject

app.controller('MainCtrl', mainCtrl);

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'use strict';
let app = angular.module('app',[]);
app.controller('MainCtrl', function($scope, $timeout) { //MainCtrl has dependency on $scope and $timeout
    $timeout(function(){
        console.log($scope);
    }, );
});

//And code after minification:

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'use strict';
let sharedServicesModule = angular.module('sharedServices',[]);
sharedServices.service('NetworkService', function($http){});

let loginModule = angular.module('login', ['sharedServices']);
loginModule.service('loginService', function(NetworkService){});
loginModule.controller('loginCtrl', function($scope, loginService){});

let app = angular.module('app', ['sharedServices', 'login']);