1
00:00:00,720 --> 00:00:04,800
Now topples like I said are quite similar to lists.

2
00:00:04,980 --> 00:00:17,690
So if I wanted to I can say new topple and use my topple and then slice that topple.

3
00:00:17,700 --> 00:00:30,560
So for example if I do one too like this and print new topple I'm going to get to karma.

4
00:00:30,650 --> 00:00:33,090
Why is that.

5
00:00:33,090 --> 00:00:39,490
Well we started 0 1 and 2 if I did 4 here and click Run.

6
00:00:41,070 --> 00:00:49,280
I get 2 3 4 it's still a temple but you have to remember that a temple that only has a single item tends

7
00:00:49,280 --> 00:00:58,410
to have this little comma at the end but it's still a temple and just like a list I can assign different

8
00:00:58,410 --> 00:00:58,860
things.

9
00:00:58,860 --> 00:01:11,690
For example I can say X equals to my topple 0 and then I can say Y equals my top all 1 and x and y will

10
00:01:11,690 --> 00:01:27,770
equal 1 and 2 but a short form of doing this again similar to lists is to say hey I want X Y Z may not

11
00:01:28,250 --> 00:01:37,280
other to be the values assigned from the top so that if I do X here and I run I get one.

12
00:01:37,470 --> 00:01:42,340
If I do Z and I run I get 3.

13
00:01:42,360 --> 00:01:44,500
What if I do other.

14
00:01:44,540 --> 00:01:50,280
And if I click Run I get 4 and 5 as a list.

15
00:01:50,380 --> 00:01:50,910
All right.

16
00:01:50,920 --> 00:01:55,290
If your head doesn't hurt by now don't worry I have some good news.

17
00:01:55,330 --> 00:02:02,100
Luckily for us a Tupolev has only two methods that we care about count an index.

18
00:02:02,110 --> 00:02:03,060
How nice is that.

19
00:02:03,160 --> 00:02:05,560
So nice and simple.

20
00:02:05,690 --> 00:02:07,290
Guess what these mean.

21
00:02:07,310 --> 00:02:12,710
So let's go back to my couple and now try these out.

22
00:02:12,800 --> 00:02:18,170
If I go my top all debt count well it's going to count the value.

23
00:02:18,380 --> 00:02:24,220
So if we want to count how many fives occur in the topo I get one.

24
00:02:24,430 --> 00:02:28,950
If I had a another five in the top all I get to.

25
00:02:29,030 --> 00:02:31,330
What about index.

26
00:02:31,420 --> 00:02:32,940
What's the index of five.

27
00:02:34,730 --> 00:02:45,660
Well the index of 5 is 4 because 0 1 2 3 for the first value that it finds it's going to return the

28
00:02:45,660 --> 00:02:46,660
index of.

29
00:02:47,190 --> 00:02:56,310
And then finally we can also do length right we can use this built in function to run length and it's

30
00:02:56,310 --> 00:03:02,510
going to tell us that yep it's has a length of 6 awesome.

31
00:03:02,700 --> 00:03:03,380
There it is.

32
00:03:03,390 --> 00:03:05,030
We're flying through them now.

33
00:03:05,070 --> 00:03:07,290
This is our third data structure.

34
00:03:07,280 --> 00:03:12,750
Remember they're simply lists that are immutable.

35
00:03:12,750 --> 00:03:14,260
I'll see in the next one by.