1
00:00:09,190 --> 00:00:14,770
Now for us to understand exactly the benefits of swift to you why I think it's important for us to look

2
00:00:15,250 --> 00:00:20,110
at the progression of the Apple ecosystem if you will for developers.

3
00:00:20,200 --> 00:00:27,400
So it used to be that in order for you to create any application for the Apple ecosystem you would have

4
00:00:27,400 --> 00:00:28,760
to learn objective c.

5
00:00:28,780 --> 00:00:29,650
That was it.

6
00:00:29,770 --> 00:00:31,140
You had no other option.

7
00:00:31,270 --> 00:00:36,670
You had to learn Objective C in order to create any sort of application for the Apple platform or ecosystem.

8
00:00:36,670 --> 00:00:42,050
Now Objective C wasn't a very easy language to learn and or to read.

9
00:00:42,100 --> 00:00:47,250
In fact it was one of the toughest languages I've ever had to learn in a lot of other people.

10
00:00:47,250 --> 00:00:49,830
Also shared the same sentiment.

11
00:00:49,960 --> 00:00:52,810
So it wasn't just me Objective C was really hard.

12
00:00:53,290 --> 00:01:00,340
So Apple decided later about 20 years or so later that OK it's time to come back to the 21st century

13
00:01:00,370 --> 00:01:04,230
and create something a little bit more easier to handle.

14
00:01:04,300 --> 00:01:07,100
So then they created swift language.

15
00:01:07,210 --> 00:01:14,200
That was a revolutionary feat if you will because Swifty was a better language very simplified and easy

16
00:01:14,200 --> 00:01:14,780
to learn.

17
00:01:14,890 --> 00:01:17,930
So developers could just learn in a whim.

18
00:01:17,950 --> 00:01:19,380
All was good.

19
00:01:19,390 --> 00:01:26,080
Now the thing that you have to realize also in order for us to build anything for the Apple ecosystem

20
00:01:26,170 --> 00:01:33,880
you'd have to of course put together some sort of user interface in traditionally creating user interfaces

21
00:01:34,120 --> 00:01:35,460
is really really hard.

22
00:01:35,470 --> 00:01:37,820
Even though we have swift language.

23
00:01:37,960 --> 00:01:45,130
The reason why is because the way we create user interfaces in the Apple realm is that we use X code

24
00:01:45,180 --> 00:01:45,660
I.D..

25
00:01:45,670 --> 00:01:53,050
So the X code is the idea integrated development environment used to create applications for Apple ecosystem.

26
00:01:53,050 --> 00:01:57,530
So you would open up X code in order for you to create user interfaces.

27
00:01:57,530 --> 00:02:01,530
You'd have to use storyboard and or UI Kit.

28
00:02:01,550 --> 00:02:08,380
Okay so libraries to create whatever you wanted to create for our user interface.

29
00:02:08,380 --> 00:02:16,750
Now the storyboard is just a clunky cumbersome tool that all developers were stuck for many many years

30
00:02:16,840 --> 00:02:20,680
in order to create anything usable for any IOW application.

31
00:02:20,680 --> 00:02:23,800
And as well for any Mac OS and so forth.

32
00:02:24,310 --> 00:02:29,600
So yes to give you an example this is a very simple application as you can see here.

33
00:02:29,620 --> 00:02:31,240
This is what we call X code.

34
00:02:31,240 --> 00:02:39,100
This is a picture of X code and this simple application here only takes about four items or four controllers

35
00:02:39,280 --> 00:02:39,700
there.

36
00:02:39,940 --> 00:02:40,650
Okay.

37
00:02:40,660 --> 00:02:45,310
So this simple application you can see two left will have view control was seen on that panel there

38
00:02:45,640 --> 00:02:51,850
and inside we have top layout guide and we have views and half a stack view and then we have the middle

39
00:02:51,850 --> 00:02:52,540
label.

40
00:02:52,540 --> 00:02:55,150
I mean it's just crazy.

41
00:02:55,150 --> 00:02:57,660
I mean you can see there's a lot of layers.

42
00:02:57,670 --> 00:03:03,960
All of these things you have to drag and drop and search for them an image view you put on top of that

43
00:03:03,970 --> 00:03:06,010
and then you put a text field.

44
00:03:06,040 --> 00:03:07,410
I mean it's a lot of work.

45
00:03:07,440 --> 00:03:14,380
And on top of that you would also have to then connect to the code in order for the responsiveness to

46
00:03:14,380 --> 00:03:14,800
happen.

47
00:03:14,830 --> 00:03:19,580
So when they click onto the UI image for you for instance if you want the app to do something then you'd

48
00:03:19,600 --> 00:03:24,940
have to make sure you connect the code and the storyboard items you've added into user interface.

49
00:03:25,300 --> 00:03:28,720
So that is of course a pain to say the least.

50
00:03:28,810 --> 00:03:36,190
All of that goes away with Swifty Y because now is Swifty y Apple decided to create this framework that

51
00:03:36,280 --> 00:03:42,940
is exceptionally amazing because now you can create all sorts of applications for the Apple platform

52
00:03:42,940 --> 00:03:44,740
using code only.

53
00:03:44,740 --> 00:03:46,630
But not just any kind of code.

54
00:03:46,630 --> 00:03:54,160
This code is declarative syntax meaning it's easy to read and it's also natural to write.

55
00:03:54,190 --> 00:03:59,830
So it's almost like you are writing in English language because you're declaring things you want to

56
00:03:59,830 --> 00:04:02,160
see in your application.

57
00:04:02,410 --> 00:04:10,840
An example you can see that piece of code to the left there generates what you see to do right now before

58
00:04:10,840 --> 00:04:17,270
Swifty y in order to create table view as they called those lists there you would have to do a lot of

59
00:04:17,270 --> 00:04:24,790
walk between the storyboard and using UI kit views and using UI kit API using all sorts of things you

60
00:04:24,790 --> 00:04:27,110
have to do in order to get this to work.

61
00:04:27,190 --> 00:04:33,970
But in this case here with Swifty you are I can see less than 30 lines of code if that actually.

62
00:04:34,150 --> 00:04:41,660
I would say probably 15 lines of code unless you're able to put together something as simple as that.

63
00:04:41,770 --> 00:04:46,900
And the beauty also you have to notice here is that looking at this code closely inside you can actually

64
00:04:46,900 --> 00:04:52,070
read even if you've never looked at Swift code of swift UI before it's easy to read.

65
00:04:52,090 --> 00:04:53,100
It's intuitive.

66
00:04:53,110 --> 00:04:58,960
You can see for instance there's a variable body there which is just a view which returns a list which

67
00:04:58,960 --> 00:05:01,120
inside of this list we have an image.

68
00:05:01,210 --> 00:05:01,590
Right.

69
00:05:01,600 --> 00:05:08,870
And we have a view stack or vertical stack which contains two texts and then we make the last tax they

70
00:05:08,870 --> 00:05:10,380
are to have a color.

71
00:05:10,520 --> 00:05:12,720
It makes a lot of sense.

72
00:05:12,770 --> 00:05:16,150
So this is why Swifty y shines.

73
00:05:16,190 --> 00:05:20,740
It just takes away all of that cumbersome code as well as storyboard.

74
00:05:20,810 --> 00:05:26,700
The old way of creating user interfaces in makes it more declarative and easy to understand.

75
00:05:26,780 --> 00:05:28,880
Easy to write and to do point.