3 : Healthy Living IntroYouTube↗  IA↗(long shot)
Education  31.1K views 7 likes 0 dislikes   25 May 2015
Udacity 651K subscribers United States YouTube↗


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This scenario, you're working on an app called Health Check.
Bu senaryoda, Saðlýk Kontrolü adlý bir uygulama üzerinde çalýþýyorsunuz.
And what Health Check is, is basically an app that administers a quiz.
Saðlýk Kontrolü, test içeriyor ve bu test kullanýcýya
And that quiz can tell the person who's using it, how helpfully they're living.
ne kadar saðlýklý yaþadýklarýný söylüyor.
The questions appear in this box here and
sorular bu kutuda gözüküyor ve kulanýcý Evet, Bazen veya
the user can answer either yes, sometimes, or no. And let's say there's about 100 different questions and they range from things like,
Hayýr þeklinde cevap verebilir, diyelim ki 100 farklý soru var.
do you exercise more than three times a week?
Haftada birdefadan fazla egzersiz yapýyor musunuz?
Do you drink less than two caffeinated drinks a day?
Günde 2'den az mý kafeinli içecek içiyorsunuz?
Or do you have a supportive social network?
Destekleyici bir sosyal çevreniz var mý?
Now, the questions are phrased in such a way that when you say yes,
Sorular öyle düzenlenmiþ ki Evet dersenz, daha saðlýklý,
that always means you're more healthy and when you say no it means you're less healthy.
hayýr derseniz daha saðlýksýz olduðunuz anlamýna geliyor.
Sometimes, it's sort of an inconclusive answer.
Bazen ucu açýk cevap olabilir.
And what the app is doing, is really keeping track of the score.
Uygulama, skoru hesaplýyor.
When you hit "Yes", it adds one to the health level, when you answer sometimes, it remains unchanged, and when you answer no,
Evet derseniz, saðlýk seviyenize 1 ekliyor.
it subtracts one from the health level.
Hayýr derseniz saðlýk seviyenizden 1 çýkartýlýyor.
Also, once you've selected one of these options,
Ayrýca, bunlardan birini seçtiðinizde,
it will show you a summary of what you just answered
cevap özetiniz görünecek ve
and what your current health level is before giving you the next question.
sonraki sorudan önce saðlýk seviyenizi göreceksiniz.
We're just going to look at the interaction between clicking one of
Bu butonlarýn týklanmasý arasýndaki etkileþime bakacaðýz ve
these buttons and showing the summary of where you're at right here.
nerede olduðunuzun özeti görülecek.
Let's look at the code. Okay, so here's the code.
Koda bir bakalým.
And I've also provided in the instructor notes,
peki, kod burada ve talimatlarda da ekledim.
if you want to take a look at the sort of text version of this.
metni isteyebilirsiniz diye düþündüm.
Again, it's not the complete code.
Yine bu tam koddeðil.
This little ellipsis here mean that there's code
Bu küçük elipsler, metodlarýn öncesi ve sonrasýnda
before and after the methods that you're shown here.
kod var demektir.
So, how does this work?
Peki nasýl çalýþýyor?
Well, when you hit the "Yes" button, the yes method is called.
Peki, Evet butonuna basarsanýz, evet metodu çaðrýlacak.
This increases the health level, makes a message, and then displays that message.
Bu da saðlýk seviyesini artýrýr. Mesaj oluþturur ve gösterir.
Similarly, when you hit the "Sometimes" button, the sometimes method is called.
Ayný þekilde, Bazen butonuna basýnca bazen metodu açýlýr.
The only difference here is that instead of adding one you add zero,
Tek fark, 1 yerine 0 eklemeniz.
which means that the variable value doesn't really change.
Yani deðiþken deðeri deðiþmez.
And the format is similar when you get the "No" button.
Format, Hayýr butonunda da böyledir.
The no method is called, one is subtracted from the health level,
Hayýr mesajý açýlýr, saðlýk seviyesinden 1 çýkarýlýr.
and the message is printed.
Mesaj basýlýr.
Okay, we have two variables in this program. Health level and message.
Peki , bu programda iki deðiþken var, saðlýk seviyesi ve mesaj.
Let's look at message first.
Önce þu mesaja bakalým.
So, my first question to you is,
Ýlk sorum þu olacak,
from the code that you see here, is message a local or global variable?
koddaki mesaj yerel deðiþken mi global mi?
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