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Hey everybody what's going on this is Caleb with deps slopes dot com.

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And in this video we're going to go ahead and build the model layer for our application that's going

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to allow us to create an instance of a hub repository will be able to download the data inject it into

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our instance and then use it to display that data and our table view.

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But first we're going to actually start by taking a look at the get hub developer guide.

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So I'm actually going to pull it up in Safari and we're going to be looking at the search functionalities

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of the Get hub API.

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And of course if you want to know more you can come here and you can read through all of it it's very

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robust very in-depth.

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And basically you can read all of the specifics but what we need to actually look at is the ability

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to search repositories and that's exactly what we want to do.

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So we can do that by using slash search slash repositories that's hard to say.

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But anyway that is what we can do.

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Now there are three parameters to sort and order and that allows us to one give a query a search query.

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What we want to look for we can sort it by the number of stars and number of forks or when it was last

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updated of course by default they're sorted by best match as Herb sees fit I guess.

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Then of course there is order.

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OK.

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Now you can sort them ascending or descending meaning from least the greatest or greatest at least.

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Now we can also in any of these additional parameters like create it meaning the date of creation the

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forked repositories or we can basically set it to be false or true so we can view for depositories or

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not we can filter them based on the number of fork's search by programming language by repo or user

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or the size number of stars et cetera et cetera.

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So there's a ton of different things we can do.

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And there's a great example right here.

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OK this is an example to search for Tetris repositories that are popular.

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OK.

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So it's going to be sorted by stars meaning the most popular written in the assembly programming language.

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So this is an example of what it might look like and let me zoom in here so we can see it really well.

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There we go.

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So we have API get hub dot com slash search slash repositories question mark Q equals and there is our

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search query Tetris.

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Now on top of the search query we can do.

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Plus language or plus fork's plus size we can do any of those and we've done plus language assembly

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because remember we're looking for Tetris that has been built in assembly.

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Then we can call and sort K and we can sort it by the number of stars.

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The order is descending.

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So it's going to sort them by the highest number of stars down to the least.

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OK that's pretty cool.

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Let's go ahead and let's close it out.

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Let's see what this query actually looks like when we call it.

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We get a lot of Jason data.

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And if you've worked with Jason before you know that this is just a way that applies as far as restful

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API go.

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They tend to return data in a Jason format which is really easy for us to work with actually.

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So I'm going to go ahead and pass this in to what's called a Jason beautifier which you can find easily

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by searching in Google.

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And this is the same Jason code.

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But it has been beautified.

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Let me see if I can zoom in.

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There we go.

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And basically this allows us to kind of collapse and open the different pieces here and dent it nicely

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bowled the keys and shows the values.

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It's really cool.

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So as you can see this is the first result called Tetris.

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OK.

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Now the owner is Daniel Eve.

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We can see his username.

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We can see his User ID.

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We can get a link to his avatar.

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You are l.

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That's pretty cool.

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So let's go ahead and close that down.

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We can see this is not a private repository.

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The U R L to the directory there which is pretty sweet.

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We can see your elf for the Tetris from his repo's.

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Part of his profile.

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You can see there's a ton of stuff here.

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Now as I scroll down you'll notice there's not going to be a number of contributors.

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If you think back that is one of the things that we use there is a fork's count that shows how many

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times it has been forked.

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But you'll notice there is not a number of contributors and that's because we need to go into contributor's

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you RL And we need to create another Jaison call and we need to download the Jaison for the contributor's

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pull out the count of contributors from there and we'll do that later on.

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But as you can see all of our data here is coming in.

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So we're going to go ahead and use this as a way of framing our mind when creating our model layer.

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So I'm going to go ahead and close out of this and pull open my X code project.

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I would recommend that you do the same because you're probably watching this wanting to learn anyway.

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So let's continue go to your project go ahead and right click on the model folder and select new file.

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Click on swift file DoubleClick and we're going to name this repo.

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Because that is what our instance will be called repo of course is short for repository that we go.

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So go ahead and we can just collapse this for now because we're just going to be writing some code and

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we're going to think our repo needs a few things.

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We're going to need a name obviously.

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So let's go ahead and let's actually create these properties now first let's create the class.

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Class repo.

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And we're going to go ahead and create var name which of course is going to come in as a string.

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OK.

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Let's use our table view here as an example.

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I mean quit out and open up the finished version.

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So let's see we have a name.

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We have a description.

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So let's create our description of type string.

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What do we have next.

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We have a number of what is this number of forks.

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OK so let's say number.

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Oops var.

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Come on var.

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Number of forks.

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OK.

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And that is going to be of type integer.

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OK what's next we have the language.

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So let's just say our language of type string.

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Var contributor's So we'll just say number of contribute towards of type int and we have what else.

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For the read me we need to know the U R L for the certain repository.

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So let's go ahead and just say var Ribault u r l of type string.

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Instead of casting it as a u r l it will be easier to use string.

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And let's think what else.

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This has everything a name description fork's language contributor's you r l o.

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Each repo needs an image will download an image and save it in the repository as well and I'm going

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to put it up here at the top var image of type II image but you'll notice that class is not coming in.

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So we need to actually import it to access that and it's OK because you I can include foundation all

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the same stuff is in there.

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But we're getting an error now.

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Class repo has no initializers.

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Let's create one.

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So let's go ahead and below.

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Go ahead and type in it.

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And we need to pass in every one of these variables and then set the variables using our initializers.

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So go ahead and type image of type II image description of type string.

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You know what I should do name before that name of type String comma description of type String comma

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language comma number of forks of type int language of type string number of contributors of type ints

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and repo you are l of type strings.

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All right so there is all of our properties.

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And now we can go ahead and set self image meaning the image from this class not from the initializer.

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And we're going to set it to be whatever image we pass in we'll do the same thing for name is equal

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to name self-caused description is equal to description self-doubt number of forks is equal to number

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of forks.

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Self-taught language is equal to language self-taught number of contributors is equal to number of contributors

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and self.

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Repo your L is equal to.

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That's not real euro.

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There we go.

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OK so now we have properly initialized all of this.

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But there is a big problem.

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All of these variables are publicly accessible.

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We can access them we can modify them.

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We can change them from anywhere.

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So we need to basically think about how we can be doing this.

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And in the past we've used data encapsulation where we've typed you know private var image and then

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down here we've said Whoops sorry with an underscore and then we'll save our image of type II image

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return image.

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Hey that's how we have basically set up private variables and we have a public accessor.

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And that is one way to do it.

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But there's actually a way easier way to do it.

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That requires a lot less code.

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And what we can do is we can set each variable itself to be public meaning we can access it from anywhere

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but we can set the setter to be private so that it can only be set inside this class repo.

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So this repo class.

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So it's going to be a public variable with a private sector.

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Whoops there we go.

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And by doing this we create a variable that is public but we allow it to only be set inside the class

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that it belongs to.

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So to save time I'm going to copy this and paste it before each variable but we are basically saving

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ourselves a ton of code.

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This is a really cool thing that Swift can do.

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We can set private variables are get a variable privately but access it publicly.

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So if we build and run you'll notice there are no problems no errors.

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We have done a great job now just to see how it works.

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Let's go ahead and let's try to create an instance of this just below that we're not actually going

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to use this but I just want to show you how you're going to call it so.

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Var Ribault equals repo.

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And if we use the parentheses there we can go ahead and access all these properties.

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Image of type image name description number of fork's language contributors and repo you are l.

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So we have successfully created our model layer for our repository.

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All this information we're going to get from the get hub API which is really cool and publicly available

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which is amazing and we're going to go ahead and move on to the next video where we're going to use

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this repo class to basically connect dummy data to our table view and start displaying cells with dummy

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data.

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Pretty cool.

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So let's go ahead and head over to the next video and let's start building that out.