001 Dart Overview_en Movie Subtitles

1 00:00:00,920 --> 00:00:05,150 In the last section, we g***t a quick overview of how this course is organized and we ended up saying 2 00:00:05,150 --> 00:00:10,400 that will first do a deep dive into the language itself and then eventually shift over to studying flutter 3 00:00:11,070 --> 00:00:12,750 before we move on to our first application. 4 00:00:12,770 --> 00:00:17,980 I want to give you a quick overview of DART itself so that you have some more context on the language. 5 00:00:18,260 --> 00:00:23,150 So let's take a look at a diagram that's going to summarize a few important concepts about DART. 6 00:00:23,630 --> 00:00:27,530 So in this diagram, we're going to take a look at four different important features of Dart. 7 00:00:28,220 --> 00:00:33,500 First off, Dart is a object oriented programming language with an object oriented language. 8 00:00:33,530 --> 00:00:37,310 We spend a lot of time thinking about how to model logic in our application. 9 00:00:37,310 --> 00:00:42,140 Using objects in dart, objects are referred to as classes. 10 00:00:42,710 --> 00:00:46,910 If you've never worked with an object oriented programming language before or don't know what the term 11 00:00:46,910 --> 00:00:49,400 class refers to, that's completely OK. 12 00:00:49,640 --> 00:00:53,200 We're going to do a deep dive on object oriented programming inside this course. 13 00:00:53,960 --> 00:00:59,990 Second, DART is a statically typed language similar to C++, C Sharp or Java. 14 00:01:00,440 --> 00:01:06,610 For reference, languages like, say, JavaScript or Ruby are examples of it dynamically typed languages. 15 00:01:07,520 --> 00:01:10,880 We will of course, discuss static typing quite a bit throughout this course. 16 00:01:11,000 --> 00:01:16,520 But for now, just imagine that in DART we have to make sure that any given variable can only contain 17 00:01:16,520 --> 00:01:20,180 data of a single type like, say, an integer or a string. 18 00:01:20,840 --> 00:01:25,940 If you've never worked with a statically typed language before or if you feel a little bit intimidated 19 00:01:25,940 --> 00:01:30,050 by types, I really recommend you not worry one bit. 20 00:01:30,350 --> 00:01:33,860 The type system and DART is extremely flexible for beginners. 21 00:01:35,050 --> 00:01:42,280 Third, Dart has a sea style syntax, so in general, it's going to look very similar to C, C sharp 22 00:01:42,280 --> 00:01:47,900 or JavaScript or even Java, you will probably not be seeing a lot of strange symbols inside your code. 23 00:01:48,250 --> 00:01:52,780 Most of the code that you and I are going to write is going to look quite legible in my personal opinion. 24 00:01:53,710 --> 00:01:59,500 Finally, Dart has multiple runtime environments, that means to say that we can somehow execute dart 25 00:01:59,500 --> 00:02:06,220 code in the browser from our command line or with mobile apps when ran in the browser, Dart first gets 26 00:02:06,230 --> 00:02:11,470 transpired into plain JavaScript code and we will see a good example of this and one of the apps that 27 00:02:11,470 --> 00:02:13,240 we're going to work on later in the course. 28 00:02:14,140 --> 00:02:19,450 When ran from the command line as a stand alone program, Dart is executed in something called the Dart 29 00:02:19,450 --> 00:02:21,710 VM or the Dart Virtual Machine. 30 00:02:22,360 --> 00:02:26,260 Finally, on a mobile device, Dart is first compiled into machine code. 31 00:02:26,590 --> 00:02:30,140 So your mobile device doesn't ever touch a snippet of pure dart. 32 00:02:30,160 --> 00:02:32,140 It works directly with machine code. 33 00:02:32,940 --> 00:02:38,310 OK, so in the section, we g***t a very high level view on a couple of different aspects of dirt, let's 34 00:02:38,310 --> 00:02:42,360 now continue in the next section and start working on our first tiny little application.