dependency injection - Is it necessary to inject $scope to a controller in angularjs? -

this question has answer here:

• reason using array notation when defining angularjs controller 3 answers

is there difference between following 2 code snippet? both work.

1.

myapp.controller("myappcontroller", ["$scope", function($scope) { // function body }]); 

2.

myapp.controller("myappcontroller", function($scope) { // function body }); 

well, difference create during minfication. if don't follow step1 , minification break code.

uglify version of 1st code

myapp.controller("myappcontroller",["$scope",function(o){}]) 

uglify version of 2nd code

myapp.controller("myappcontroller",function(o){}) 

if follow step 1 , angular find definition of o injection.

but if follow step 2 , angular won't find definition of o source.