108. Why would you Need Services

Jul 15, 2026 04:40 · 2:04 · English · Whisper Turbo · 2 གསལ་བཤད་

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Here's an example app which you can find attached to this lecture.

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S… Speaker 2 (108. Why would you Need Services)

Here we can create some accounts.

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S… Speaker 2 (108. Why would you Need Services)

You see we start with three accounts here at the bottom.

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S… Speaker 2 (108. Why would you Need Services)

We can switch the status of these accounts and you can see that whenever I

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switch it I log something to the console.

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You can also see that this gets locked if I create

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a new account here.

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And overall what we got here is the logging and

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S… Speaker 1 (108. Why would you Need Services)

the data storage.

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So in general tasks which might be centralized.

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We also communicate between these components.

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S… Speaker 2 (108. Why would you Need Services)

That's another area where services can be really helpful.

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S… Speaker 2 (108. Why would you Need Services)

Because let's have a look at our code.

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S… Speaker 2 (108. Why would you Need Services)

I got three components.

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S… Speaker 2 (108. Why would you Need Services)

The app component,

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then the account and the new account component.

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S… Speaker 2 (108. Why would you Need Services)

The app component is where all comes together.

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S… Speaker 2 (108. Why would you Need Services)

There in the template I embed the app new account and the app account component

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S… Speaker 2 (108. Why would you Need Services)

and I use property and event binding to pass data around.

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S… Speaker 1 (108. Why would you Need Services)

For example,

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S… Speaker 2 (108. Why would you Need Services)

I loop through all accounts,

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S… Speaker 2 (108. Why would you Need Services)

which are right now stored in the app component here,

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S… Speaker 2 (108. Why would you Need Services)

and I pass them via property binding to the app account

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S… Speaker 2 (108. Why would you Need Services)

component here.

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S… Speaker 2 (108. Why would you Need Services)

And there,

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on the other hand,

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S… Speaker 2 (108. Why would you Need Services)

I have an event,

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which gets fired when I click one of the three change the status buttons,

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S… Speaker 2 (108. Why would you Need Services)

which is submitted here,

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S… Speaker 2 (108. Why would you Need Services)

which will be catched by my app component,

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S… Speaker 2 (108. Why would you Need Services)

where I then handle it again.

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S… Speaker 2 (108. Why would you Need Services)

So I do have event binding to be informed in my app component whenever

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S… Speaker 2 (108. Why would you Need Services)

something changes in the account component.

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S… Speaker 2 (108. Why would you Need Services)

Pretty much the same happens in the new account component.

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S… Speaker 2 (108. Why would you Need Services)

There I can also listen to a click when I create a new account and on

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S… Speaker 2 (108. Why would you Need Services)

such a click, I emit some data to the app component.

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S… Speaker 2 (108. Why would you Need Services)

So this is all fine,

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S… Speaker 2 (108. Why would you Need Services)

but we already got quite a complex setup here to pass data around.

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S… Speaker 2 (108. Why would you Need Services)

And that even though that it's still relatively simple,

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S… Speaker 2 (108. Why would you Need Services)

it's not a complex app here after all.

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S… Speaker 2 (108. Why would you Need Services)

Now in this lecture,

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S… Speaker 2 (108. Why would you Need Services)

we're going to see how services can help us with that and what we

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have to watch out for.

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S… Speaker 2 (108. Why would you Need Services)

So let's dive into it and build our first service in the

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S… Speaker 1 (108. Why would you Need Services)

next lecture.

ཡིག་སྒྱུར་འདི་ བཅོས་མའི་བློ་རིག་ (སྒྲ་ངོས་འཛིན་བྱེད་པའི་འཕྲུལ་རིག་) གིས་བཟོ་སྟེ་ཡོདཔ་ཨིན། འཛོལ་བ་འབྱུང་སྲིད་པ་ལ་ — གལ་སྲིད་ཁག་ཆེ་བའི་དོན་ལས་ ངོ་མ་གི་སྒྲ་སྐད་དང་འཕྱད་ཞིབ་འབད་དགོཔ་ཨིན། བཅོས་མའི་བློ་རིག་གི་སྲིད་བྱུས་

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