Name: Swift 3のエクササイズ。関数 - iOS 10 & Swift 3 マーク価格 Udemyコース (Swift 3 Exercise: Functions - iOS 10 & Swift 3 Mark Price Udemy Course)
Uploaded: 2021-01-14T10:24:46.000Z
Duration: 7 min 7 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

現在進行形

Hey, guys, what we're gonna do today is go over and exercise on functions within mark prices.

to 不定詞

Eyeless 10 and Swift through Unity Course it is section to lecture 20 as of this date, and it's exercising function.

過去形

So normally I put this which I will put this into my idol journey.

But I know there's some people who are just searching, you know, maybe they want to follow along with someone else doing this exact exercise.

So I figured I'd make it a standalone video as well.

But if you want to see me go through like all of Section two, I'm going to make a two separate videos on that already make made quite a few going through, You know, different levels of Iowa's development, learning it storyboard and and things like that so you can check that out on my channel.

But I figured I make this a seven video for for all those who just want to see this.

So the first thing to do create a new, extra playground done creative function named Ad that takes two parameters of type double and returns to some of the two numbers.

And then it said it wants to be a double.

You could name whatever you want, but that's just what I'm gonna name this for sake of argument and then within it.

I want us to return some of the two numbers so we could do return number one.

I would have to send this over like this.

Make that a double like that, that you were great.

I don't see that you're turning anything.

Sometimes there's a slow for me, so I just have to keep it moving, and then I'll come back to you in a bit.

So that was questioned to question one question to now courses through creative function names attract that takes two parameters of type into so integers and returns difference of the two numbers.

So, basically, just don't say anything but subtracting way just return.

It seems that weighs last time, but subtracting.

Returns a difference of the two numbers, So Oh, that's right.

What we didn't do is a sign numbers to the actual, very correct.

I'm still having trouble with this reader over here because it's just this hell, a playground.

So what we're gonna do is we're gonna eggs out of this and then and then I'm gonna pay you back in.

The notion had I don't think you have anything because we haven't cleared number one to be any type of number.

So basically, the next thing we do is it seems like thing, but we multiply floats and then after that, we're gonna divide double.

So let's just hurry up and do that already.

So because it's really not that difficult, No, we're gonna do next.

All of this functions in past different values into the parameters and sure they're producing the correct results.

but basically we're giving all these numbers.

Okay, so it looks like it wants is to assign these.

It wants us to reference our call these functions into a situation where we're actually declaring the numbers so we can use of our or let just do it, make it nice and neat.

Let, uh I don't think I can use ad Duke let plus on thes air doubles.

And now it goes back up into This is the last thing that you wanted them to equal within this function.

We just did it with all let minus make number two equal.

We'll see that this doesn't work because it needs to be an interview.

Even if we put a double over here, it won't work because obviously there declared to be an integer hasn't changed yet till I get out of there.

Three folk can only hold like so many bites.

It's only it's only so many bites worth, while a double is a lot bigger than afloat.

Some people would like to say, Oh, no, I want to use a float because it's going to use the last memory Well, it's not worth in the long run.

I mean, if you need a change, that means you'd have to go back and change the float.

And the only reason you need to do that is if there's an error in your code.

They just want us to throw values in there, make sure worked each and every way, major, the double worked, right?

Our major first of all, major, that our function works right, major, that we declared it correctly in order for you to doubles, to come on as a double.

And in order for us to only be allowed to put in doubles, there's well into your float and double again.

Be sure to do so if you wanna, you know, get on this journey with me and I'll support you guys while you'll support me and it'll it'll help us get closer to our goal, our end goal.

 And that's to be in Iowa's developer, one way or another, so I hope you enjoyed it have going. 