1 00:00:00,820 --> 00:00:05,140 In this video, we're going to follow up on a raise by discussing a very similar data structure called 2 00:00:05,140 --> 00:00:10,030 a tuple, and you'll sometimes also hear this pronounced as tuple, totally up to you, either tuple 3 00:00:10,030 --> 00:00:10,630 or tuple. 4 00:00:11,530 --> 00:00:12,580 Either way, you want to do it. 5 00:00:12,970 --> 00:00:15,670 So, as usual, definition examples and so on. 6 00:00:16,270 --> 00:00:16,510 All right. 7 00:00:16,510 --> 00:00:17,830 So first off, quick definition. 8 00:00:18,310 --> 00:00:23,520 So when we are working with a tuple or a tuple, we have something that looks very similar to an array, 9 00:00:23,560 --> 00:00:24,540 very, very similar. 10 00:00:24,940 --> 00:00:29,800 But the big difference here is that we are going to have every element inside of this array looking 11 00:00:29,800 --> 00:00:33,400 thing represent one specific property about some record. 12 00:00:33,910 --> 00:00:39,070 So whereas an array tells us a bunch of different records or organizes a collection of different records, 13 00:00:39,400 --> 00:00:44,410 a tuple usually contains multiple different properties to describe one single thing. 14 00:00:45,380 --> 00:00:50,330 And as a follow up to that, usually inside of a couple, we will mix and match many different types 15 00:00:50,330 --> 00:00:51,350 of data inside there. 16 00:00:52,100 --> 00:00:53,540 So let's take a look at a quick example. 17 00:00:54,200 --> 00:00:54,620 All right. 18 00:00:54,620 --> 00:00:57,830 I want you to imagine that we've got some object like the one you see right here. 19 00:00:58,220 --> 00:01:02,900 And the goal of this object is to represent a drink, like, in this case, soda or pop, whatever you 20 00:01:02,900 --> 00:01:03,890 want to refer to it as. 21 00:01:04,519 --> 00:01:10,160 So maybe inside this object, we have a color property that is a string of brown carbonated that is 22 00:01:10,160 --> 00:01:16,230 a billion of true and sugar that is meant to represent the sugar content of the soda in grams. 23 00:01:16,250 --> 00:01:17,450 So that will be a number here. 24 00:01:17,840 --> 00:01:22,700 So as you might guess, this would represent maybe like Coca-Cola or Pepsi or something like that. 25 00:01:23,580 --> 00:01:28,220 So representing a drink or a soda with an object like this, I think makes a lot of sense. 26 00:01:28,250 --> 00:01:34,100 If you're coming particularly from a JavaScript background, we've got one object to represent one drink. 27 00:01:34,400 --> 00:01:38,750 And this object has some properties that describe what is going on with this singular drink. 28 00:01:39,640 --> 00:01:44,200 Now, just for fun, I want to take this object right here, and I just want to try to represent it 29 00:01:44,200 --> 00:01:46,120 with a slightly different data structure. 30 00:01:46,720 --> 00:01:49,990 Let's try to represent this object with an array instead. 31 00:01:50,590 --> 00:01:51,470 So how can we do that? 32 00:01:52,120 --> 00:01:55,270 Well, maybe we would say that we would take each these values. 33 00:01:55,270 --> 00:01:56,320 So like Brown. 34 00:01:57,310 --> 00:01:57,910 True. 35 00:01:59,300 --> 00:02:03,200 And then 40 and stick them into this array like so. 36 00:02:04,260 --> 00:02:09,120 So now we have a slightly different looking data structure that still represents a drink. 37 00:02:10,060 --> 00:02:14,200 And turning this into this, a raid right here, we have lost a little bit of information. 38 00:02:14,560 --> 00:02:19,660 In other words, you and I as developers can very easily look at a object declaration like this right 39 00:02:19,660 --> 00:02:25,600 here and very quickly understand, OK, the colors brown carbonate is true and sugar is 40. 40 00:02:26,290 --> 00:02:31,400 When we start to represent this object as an array, we've lost those different property labels on here. 41 00:02:31,780 --> 00:02:37,510 And so you and I as developers would have to memorize the fact that the first element inside this array 42 00:02:37,690 --> 00:02:39,780 is supposed to be a string representing the color. 43 00:02:40,300 --> 00:02:44,860 The second element is supposed to be a boolean representing whether or not the drink is carbonated. 44 00:02:45,520 --> 00:02:49,270 And then the third element inside there is a number representing these sugar content. 45 00:02:50,260 --> 00:02:55,180 So the big difference between representing this as an object and something that looks like an array 46 00:02:55,300 --> 00:03:01,690 is really just that loss of information in these labels no longer is our code really self labeling. 47 00:03:02,050 --> 00:03:05,440 Instead, we have to kind of memorize the order of properties inside of appear. 48 00:03:06,290 --> 00:03:13,010 So this is exactly what a tuple is, we have what looks like an array and we put in our property values 49 00:03:13,010 --> 00:03:15,280 into that array in a very specific order. 50 00:03:15,980 --> 00:03:17,750 So the ordering part is really critical. 51 00:03:18,140 --> 00:03:23,810 If we start to arbitrarily swap around elements inside of here, we are no longer going to understand 52 00:03:23,840 --> 00:03:26,630 which different value represents which property. 53 00:03:27,440 --> 00:03:32,360 So if you and I have memorized, like as developers, that this array is always supposed to tell us 54 00:03:32,390 --> 00:03:38,300 the color, then the carbonation and then the sugar content, and we swap some elements inside of here 55 00:03:38,900 --> 00:03:40,280 and we don't have those labels. 56 00:03:40,580 --> 00:03:45,470 Now, this is kind of a meaningless record because we're now trying to indicate that our color is 40. 57 00:03:46,130 --> 00:03:48,770 Carbonation is true and sugar content is brown. 58 00:03:49,290 --> 00:03:54,410 So when we work at the tuple, we have a fixed series of elements or a fixed order, I should say. 59 00:03:55,510 --> 00:03:58,270 All right, now, let's take a quick pause right here, we're going to come back to the next section, 60 00:03:58,390 --> 00:04:02,020 get some more examples around tuples and start to write out some code around them. 61 00:04:02,350 --> 00:04:04,410 So quick pause and I'll see you in just a minute.