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Hello everyone.

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In this video, I want to give you a tour of the CodeLite interface.

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The version of CodeLite that I'm using here is 17.3.0.

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This version is more recent than the versions that I used,

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when I recorded the videos for the course.

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Overall, they are very very similar, sure you're going to see a couple of differences

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in the user interface,

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some things have been cleaned up and made more streamlined.

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But the basic functionality of the IDE,

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namely creating workspaces, creating projects, editing the code,

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building and running the code have not changed.

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So, let me give you a quick tour here.

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When you first open up CodeLite,

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if you don't have a workspace already open since the last time you saved it,

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you'll get a screen that looks like this.

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Over here on the left side, you'll see the Workspace view.

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This is where the workspace and projects

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will reside, there aren't any open now, because I don't have a workspace open yet.

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Over here in the center, you see these

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four big buttons.

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Again, that might change in the future,

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but right now we're going to use two of them, we're going to open an existing workspace,

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I'm going to create a new workspace.

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Down at the bottom, we can see recently opened workspaces,

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so you can see that I've already opened three workspaces

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and I did that, so you can see something down here.

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Very likely, the first time you run CodeLite, you're not going to have any workspaces,

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so this section down here will be empty.

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So, suppose I want to load a workspace, I can open a workspace and navigate to it.

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Or I'm just going to click Workspace 2 right here,

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which is a workspace that I created with several projects in it,

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just to walk you through this interface.

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So I'm just going to double click that

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and you can see that CodeLite has loaded Workspace

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2 into the Workspace view.

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Workspace 2 has four projects in it, project 1, project 1, 3 and 4.

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Each one of those is a stand alone C++ application.

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We can expand each of them.

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And you can see each one has a source folder,

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 and within the source folder, they each have a main.cpp source file.

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That's where our C++ code goes.

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Later in the course, we're going to have projects that have multiple CPP files in them.

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Also you can see that Project 1 is bold

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 and italicized,

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that tells you that Project 1 is the active project.

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The way that CodeLite works is that it builds and runs the active project.

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So when we come up and build things in a minute,

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it's always going to build the active project.

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So it's really important that we understand what

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we're building, because we could be editing Project 4

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and then pressing build, thinking that Project 4 is being built.

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But if Project 1 is the active project, project 1 will be built.

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Sounds confusing, but it really isn't,

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just make active what you're working on, it's really straightforward.

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Okay so, that's the workspace view,

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we've got some tabs up here

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 and the only one we're going to use is Workspace, don't worry about the rest.

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In the IDE or an integrated development environment, such as CodeLite

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is designed for small programs like we're going to do,

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and it's also designed for very large programs.

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So it's got a lot of bells and whistles that we're not going to use.

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These are the kinds of things you would use in programs

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 that are thousands of files and

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very, very complicated.

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So in this case, we're just going to keep it really, really simple,

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this is all about learning C++ more than it is about learning CodeLite.

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So, there's my workspace, you can see that I have this little

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paper airplane here, and when you click that, it collapses everything.

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Sometimes, we've got a lot of projects in here and they all get expanded

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and it's really hard to find stuff.

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So if you click that, it just collapses everything.

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Now, I can expand whatever I like again.

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Also, if I'm somewhere down here let's say,

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 and I want to go to my active project, I can just click that home icon

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 and that takes me to my active project right away and opens it up,

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so that's kind of handy.

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And you've already seen the settings,

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you can click the project you want and you can click that little wrench

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and it gives you your settings.

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We did that when we installed and configured CodeLite a few videos ago,

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 all right.

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So, that's the workspace view.

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Now this big area right here

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in the center, that's got nothing in it right now, this is your editor.

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In order to use the editor, you need to click on a C++ file

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or something in the project.

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So in this case, I'm going to double click on main.cpp and it opened it up.

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And you could see this is very similar to the program we wrote during the installs.

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Hello from Project 1, makes sense.

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Now let's say, I want to open up Project 2, and I want to open up that source file

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that loaded up as well and it says hello from Project 2.

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Up here in the tab, we can tab between those two.

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And as I do that, you can see this blue bar over here in the Workspace view,

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jumping to the appropriate file in the project.

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We can turn that off by clicking that little link right here,

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I don't know why you would want to do that, I love the fact that I can see exactly

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 where it's at, so I'm just going to leave that alone.

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We can open up the rest of these projects as well,

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let me expand all of these and I'll open up Project 3 and Project 4.

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So now you can see that, I've got four project main cpps open up here,

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and it's pretty easy to see,

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which project they belong to and you can actually hover over it,

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and it tells you the path to the workspace

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and the project and the file within the project, okay?
So,

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that's great.

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When I modify the code and again, I'm going to go, let me collapse all of these,

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and I'm going to go to my active project, and there's project 1.

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So, that's where I'm at right now,

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I can close these up now, just to get them out of the way.

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Right now, I'm working on project 1.

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When I make any changes to this file for example,

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suppose I added a space at the end of this line.

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We get this little red dot right there, right next to the project name

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in the tab, that tells you that this file is called dirty.

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So in other words, what I'm working on right now is not what is on the file system.

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So, it's telling you right there, hey be sure to save this,

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if you really want this updated on the disk.

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So we can save with file,

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save file or CTRL S or you can click on this little save

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icon right up here in the bar, and I'll talk more about that control bar in a moment.

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So I can do that, I can press CTRL S and that little red dot goes away.

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If you're on Linux, It's a little black dot on most of Linux distributions,

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but again it doesn't matter what colour it is,

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but you're not going to see that little x to close it.So, that's my project 1.

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Let me remove that line

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and again, you can see that that's red and I'm going to save it again.

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So, this is how we would edit our program.

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I've made this font large, so that you can see it,

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better on video.

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All of that is in the settings, colours and fonts, If you click that,

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you can change the fonts, the colours, the

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theme that you're using, whether it's a light theme or a dark theme and so forth.

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I'm just going to leave this alone.

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We've already learned, how to create projects, we've learned how to create

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workspaces.

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We did that in the installation video, so that process is exactly the same.

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Now, how do we build and run?

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Well, let me expand this.

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Right now, project 1 is the active project, so we can come up to build.

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And we've got a couple of options here, you can see,

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we can run, we can build a project, we can rebuild it, we can clean it,

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we can do a whole bunch of stuff, right?

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We're only going to be using a couple of these, actually, probably just one of these most of the time.

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In order to create an executable file that we can run,

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we need to build the project.

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And in order to

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run an executable file, we have to have a good build, no

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 syntax errors, no other errors.

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You can do that by pressing F7 to build the project, so let me do that.

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And the output view opens up down here and I'm just going to

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 scroll this up just a little bit, little bit up, so you can see it all.

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The output view opens up.

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And we get our build output here, you can see that build output is in this build tab.

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If you post on the Q & A form saying, hey, I've got some kind of error, it's not building,

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I'm going to ask you to show me the build output, because that tells me what's going on.

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So, this is the build output notice, successful build, no errors.

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Once we have a successful build, we can come up to build and run it.

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Now it's going to ask me, would you like to build the active project before executing it?

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I've already built it, so I don't have to build it again, you certainly could.

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And if you want to always do one of these, just remember your choice.

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And click that little check mark, and it's not going to pester you all the time with this little,

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pop up.

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So let me execute it

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 building and running Project 1, so I expect

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hello from Project 1 to display on my terminal, my command prompt.

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Execute and there you go, hello from Project 1.

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I should also mention that the process for Mac,

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Linux and Windows is exactly the same.

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So everything I'm talking about in this video, applies to all of the operating systems.

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When we're done, we press enter and we close that.

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So that's that, now we can modify the

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look and feel.

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So for example, suppose I don't want my output view over here.

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Suppose I want my output view over here, on the right?

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I can grab this blue bar,

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 It may not be blue on your end, but I can grab that bar

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and just drag it over here.

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You can see it's lighting up right there, so I'm just going to drop it there,

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so there's my output view.

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And, now suppose I want my workspace

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view to be above that, so I can just move that over there.

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So now I can have my workspace view over here, my output view over here.

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The View menu option

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 gives you all kinds of options for example, I can turn my output put pane off.

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In which case you can see it's just disappeared over here from the right

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and I can turn it back on.

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I can turn my workspace pane off

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and back on.

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This is totally up to you what your preferences

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are as far as the look and feel of your work environment.

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We can also do a view

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with the main toolbar orientation, that's the toolbar,

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that's this toolbar right up there,

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the one we see with the plus and the bug and all that.

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These are just shortcuts to things I've been doing, we can add a new file,

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we can open a file, we can save a file.

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That little hammer builds the active project.

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Here, we can stop a build, which is

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 not a big deal for us, because our builds are pretty fast.

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But when we have really large C++ programs,

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builds can sometimes take an our believe it or not, or longer.

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So sometimes we'll want to stop the build for whatever reason.

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We can clean the active project and I'll show you what that is in just a moment.

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And we can run the active project and certainly we can debug,

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and we'll talk about debugging in a different video.

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So, these are the main functions here.

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If for whatever reason you just get lost in this interfacing,

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so you start moving these things around and oh my goodness,

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 I don't like what I've done and I've having trouble getting back.

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You can always just go to view and restore layout.

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And that'll bring it right back to factory default, basically.

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So as I said, there's all the view issues here,

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If you don't like that main toolbar up here at the top and you want it on the left,

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you could just go to view main toolbar orientation left.

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And then it's going to say, do you want to reload CodeLite.

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Sometimes it's going to want to restart, let me say yes, you can see what it's like.

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It closes up, it opens up again

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and now you can see that the toolbar is over here on the left.

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So again, personal preferences there all the way around with the views.

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So now, let's talk about the build again.

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In this case, if I want to build,

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what that means is

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I want to build the active project.

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So what CodeLite is going to do, it's going to go out there and it's going to see first,

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has it already been built?

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If it has been built, then it's going to say,

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has anything changed in the source code here,

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since the last build?

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If the answer is no, then it's not going to rebuild it,

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 It doesn't need to rebuild it, since the build is current,

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makes sense?

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Now, if we have made any changes or it's the first time we build,

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it's going to certainly build it.

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So that's what build does.

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Clean the project, removes any intermediate files, the executables,

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it just basically

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clears out everything.

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Not your source code, just the build products, cleans out everything.

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So the next time we build, we have a clean build, in other words, there's nothing prebuilt.

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Rebuild does both of those essentially.

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First it cleans and then it builds.

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That's what I would encourage you to use throughout the course, rebuild project.

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The reason that we don't use rebuild project in industry very much

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 is because, our projects can be very, very large.

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And if I do a clean and then a build every time, it could take 20, 30 minutes.

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Whereas, the build itself is only going to build things

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that have changed since the last build,

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so they're much more efficient.

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But for this course, I would encourage you to select rebuild project.

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So let me do that, I'm going to click rebuild project,

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and you can see that the output view opened up down here.

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You probably didn't see it, but right before the build happened,

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the clean also happened.

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And the clean kind of looks like this, I'm going to select build clean project.

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And you can see that rm, means remove,

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so it's removing all the files in the build debug folder,

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which are all the intermediate files, all the binary files, essentially.

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So that's the clean.

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Now we can come up to build again now remember, let me rebuild it.

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Now, when you see a build that includes g++ exe,

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that's a real build that's actually building the intermediate files, okay?

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I hope this makes sense.

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Now if I try to build again just to build.

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Notice nothing happened, there was no g++ command in there.

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That's because the project was already built.

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CodeLite realized I don't need to build it, it's already current.

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So my advice is to always use rebuild, okay?

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Now we can do it at the project level, the active project,

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or we can build the entire workspace, or clean an entire workspace,

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or rebuild an entire workspace.

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So let me show you how to clean the entire workspace.

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You can see that, I just cleaned the workspace,

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so it's removing files from

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every single project, so you can see project 4, project 2, project 3, project 1.

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Now I can rebuild each project.

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But we rebuild the workspace, and it's going to build everything

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 for each project within the workspace.

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We're probably not going to use that, I just wanted to show you that it was there.

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Okay?
Perfect.

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Now obviously I can run Project 1 again,

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 if I make project 4 the active project and I can do that by just double clicking it,

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just like that.

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And I can run it and go to build and run.

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I don't need to build it since, I've built everything

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in the workspace already, I'll just execute

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and we should see hello from Project 4 and that's exactly what we see.

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Great, all right?

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So that covers the building,

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the debugger I'll cover in a separate video later on in the class.

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Let me close this output view down a little bit.

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We also have

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searching for example, I could search for things within files,

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across files.

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I know that all these programs have a main in it, so I can find in files

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and I can say I want to search for main.

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And press find and then the output view again opens up,

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 this time with the search tab highlighted.

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And you can see that I've got a main in

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 Project 1 and Project 2 and Project 3 and so forth.

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And if I want to go to, let's say, Project 1's main,

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I could just find Project 1 and click here.

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And there it is, Project 1's main.

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I can go to Project 2's main

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and Project 2 opens up, up here and there it's main.

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So it's pretty handy to find things across files in your entire workspace in this case.

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You can clear all this by just

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clicking right there in that little broom and clear it up.

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And that's my output view, It's got several uses,

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 this build tab is probably the mode we're going to use the most,

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and it's probably the most important one,
because that'll tell us if there's compiler errors and so forth,

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 all right?So let me close this back up.

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Now if the plugins, let's talk about that for a moment,

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there's really two plugins I want you to activate, they may be activated already,

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they may not be, but let me show you how to do it.

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You go to plugins and manage plugins and let me

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 close this down here.

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To give us a little bit more room, let's go to plugins, manage plugins.

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And there's a whole bunch of plugins and plugins are just little external

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pieces of code and little programs that CodeLite uses.

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So the ones that I want you to check off for sure are

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 language server plugin, make sure that's checked.

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And down here where it says wizards, make sure that's checked,

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because we're going to use that later in the course.

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That's it, hit okay?

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And when you come to plugins, it might ask you to restart.

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But you'll see those two plugins here in the language server.

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You can basically go to settings and make sure that everything's enabled, It should be by default.

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And then you could restart the language server.

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And what that does is that helps you do code completion, so as I type,

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it's going to help me by helping me complete the code.

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For example, if I typed in some variable name here

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 and again we'll talk all about variable names later.

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Let's create an integer called age, let's say my age.

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Something like that,

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we put a semicolon here,

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 then later on, if I want to use my age, I can just type my underscore

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and it pops it up for me and I can just press tab

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and use it, so I don't have to type.

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It also allows us, let me delete this.

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It also allows us to use some of the C++ keywords and functions so example,

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if I wanted to use double,

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i could just do that, press tab and create a variable name.

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So again, makes it very handy.

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It's kind of finicky sometimes, sometimes it wants to work,

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sometimes it doesn't want to work.

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What I've found is, if it doesn't work, just rebuild.

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Rebuild and then it kind of kicks it in.

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So, that's the plugins,

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 the settings, there's tons of settings here.

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We've already seen some of the colours and fonts, the preferences,

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we've got whether we want to display line numbers over here

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in the editor or not.

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We can turn that on and off, highlight the current line number like that,

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you can see seven is bold.

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Again, I just leave all this alone, because the default

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 settings are pretty good.

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I'll close that up, you can look through there, but again don't just

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 start clicking on things, because your interface is going to get pretty crazy.

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So let me just leave that alone.

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Then the other thing you're going to see in your code is this little red thing.

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And it might be red, it might not be red, depending on the operating system,

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but you'll see some kind of little icon here.

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Where we can click it.

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And it collapses that.

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So, you can see that it collapses that.

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Now that doesn't look very useful here, but when you've got a lot of

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code, let's say you have 500, 600 lines of code.

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And you've got parts of your program that you're really not interested in right now,

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you're working on a different section.

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You can collapse certain sections

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 to kind of just hide them, sort of it's not really hiding them, because they're there.

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But just kind of get them out of my way, right now while I work on this other section.

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The code is still there, you can see from the dots that the code is still there

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and we can always expand it whenever we like.

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Okay, so pretty much covers the basics that I wanted to cover.

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Really important, don't forget about view restore layout.

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If your layout gets really wonky,

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 just go back to view and restore your layout and you're good to go.

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As far as creating workspaces and creating projects,

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we've already done that before in the installation videos,

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so that should be pretty straightforward.

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If you have a workspace open

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and you try to create a new one, it won't let you.

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Make sure you close the workspace first and then you're allowed to create one.

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So here's a section 19 workspace,

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this is a workspace we're going to use later in the course.

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Let me open it up to give you an example of

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a workspace with a bunch of projects in it.

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So you can see Section 19 that's again later on in the course.

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This is the section, we're going to use

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and this is the section on IO and how to use files and how to do things like that.

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So, we've got a lot of different projects in here.

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Each one has

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a description, main.cpp, and this is some of the code that we'll write later on.

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I know it looks maybe a little bit daunting right now, but don't worry,

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it'll be fine.

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I can close that up.

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And in this case, challenge 1 solution is the default project.

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Here is the challenge 1 solution, solution.

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So there's the code and you can see here,

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 where it really is useful to use code folding

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00:20:19,100 --> 00:20:22,600
 and fold some of this stuff and kind of get it out of the way.

403
00:20:22,600 --> 00:20:25,300
So for example, there's my main, that's my whole program, right?

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00:20:25,300 --> 00:20:27,300
But let's say I only want to look at structs.

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And I'm only looking at my structure, so they show up really, really cleanly

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without going through hundreds and hundreds of lines of code.

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00:20:35,700 --> 00:20:38,800
In this case, that's my challenge 1 solution, suppose I want to run it.

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Well, I'm going to come to build, remember it is the active project,

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because it's bold and italicized,

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I'm going to go to build.

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I'm going to select rebuild project,

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you can see my output view down here, It's doing g++ exe.

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It's using everything I need to use.

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Then I'm going to come to build, run project right there.

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Just execute.

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00:21:01,010 --> 00:21:05,370
I'm going to get a command prompt window
 and that's the output from this program that we're going to do,

417
00:21:05,370 --> 00:21:06,370
later on in the course.

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Okay, so that's it.

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00:21:09,670 --> 00:21:13,270
This gives you a pretty good feeling for the interface,

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00:21:13,270 --> 00:21:17,170
 the entire CodeLite interface, there's a lot of stuff I didn't cover obviously.

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00:21:17,170 --> 00:21:20,670
But I'm not going to use any of that stuff that I didn't cover in the course.

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00:21:20,670 --> 00:21:24,970
IDE as I said, are usually used for very large programs.

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00:21:24,970 --> 00:21:26,870
But they can also be used for small programs,

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we're just not going to use all the bells and whistles.

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00:21:29,070 --> 00:21:31,270
So you have any questions, please let me know,

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and I'll see you in the next video and we'll start coding.