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So welcome again in this lesson I'm going to show you two different ways that we can learn to if the

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next court one of them is obviously we can use the command line tool the baby has been doing it for

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Objective-C and it's another and much more modern way of doing it which is called a playground in ex-cult.

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Let's go ahead and look at both of them when I go to school.

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And I'm going to make myself a new project.

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This new project is going to be a command line tool and I'm going to call it my first swithe command

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tool.

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The only thing you have to change in here is you have to make sure your language is not objective as

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it is with.

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So I'm going to head next.

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And now let me put it in but I have to put it create and now we have kind of a very similar thing we

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have in Maine that swift and it's written in history of language.

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And the only downside with this method is every that they want to see what they have done.

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I have to build and run it.

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And that's you know you can imagine this line of code that Corinne's the text Hello world.

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It's identical to saying in this log what we would say hello world in Objective-C and you know to run

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it and to see the result of what they have to build and run the application or build and run the project.

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And then I will see a little cost showing up at the bottom.

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That's going to actually show us you know what is going on now.

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There is a much easier way.

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So when I close this project and I'm going to say find a new playground and playground it helps us to

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see things are kind of in real time.

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So let's go ahead with that.

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And when I say find new playground is going to be a blind playground and I'm going to call it my first

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play play call.

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So my first playground and I'm going to increase its size.

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So playgrounds are in a state that we call it.

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They can have a state that we call it real time feedback from them so I can actually go in here and

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press this button and that executes my playground and actually tells me what is going on.

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So for instance if I go in here and I say let's say you know we know what these things mean I'm going

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to write my next the string is going to be hello Swift and then when I do that it takes a little while

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because the app is actually calculating itself but once is really is going to show us the result of

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that in here.

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Now depending on the version of ex-coach this might be a little bit slow simply because you know I'm

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using x.

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Peter I'm not sure if these things are functioning as well as you would expect them.

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You can actually go in here.

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Stop the execution and rerun the execution immediately see what's going on in this little you know print

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area.

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So two methods of learning Swift One is the command line tool one is with three gone through all these

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lessons.

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I'm going to use our combination of both of them so if we get a sense of what different things are.

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Keep in mind that play guns cannot do anything for you when it comes to running an apple or making it

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or anything of the sort.

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The only thing it can do is it can show us stuff that is primarily for learning purposes.

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One very important note in here is that playground has an iPad app.

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So that said there's an official OP by Apel.

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So if you want to you can actually download that and Lehren swift programming on your iPad.

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It doesn't unfortunately work on iPhones only on iPods.

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So with that in mind let's move on.