update

rustbook-uz/src/ch15-04-rc.md

@@ -40,16 +40,7 @@ Ushbu kodni kompilyatsiya qilsak, biz yuqoridagi xatolikni ko'ramiz:
 
 Buning o'rniga havolalarni ushlab turish uchun `Cons` ta'rifini o'zgartirishimiz mumkin, lekin keyin biz layvtaym parametrlarini ko'rsatishimiz kerak bo'ladi. Layvtaym parametrlarini belgilash orqali, biz ro'yxatdagi har bir elementning yashashini ko'rsatamiz. 15-17 ro'yxatda ko'rsatilganidek bu elementlar va ro'yxatlarga tegishli, lekin har doim gam emas.
 
-Instead, we’ll change our definition of `List` to use `Rc<T>` in place of
-`Box<T>`, as shown in Listing 15-18. Each `Cons` variant will now hold a value
-and an `Rc<T>` pointing to a `List`. When we create `b`, instead of taking
-ownership of `a`, we’ll clone the `Rc<List>` that `a` is holding, thereby
-increasing the number of references from one to two and letting `a` and `b`
-share ownership of the data in that `Rc<List>`. We’ll also clone `a` when
-creating `c`, increasing the number of references from two to three. Every time
-we call `Rc::clone`, the reference count to the data within the `Rc<List>` will
-increase, and the data won’t be cleaned up unless there are zero references to
-it.
+15-18-ro'yxatda ko'rsatilganidek, `Box<T>`ning o'rniga`Rc<T>`ni ishlatish uchun biz bizning `Ro'yxat`imizning mazmunini o'zgartiramiz. Har bir `Cons` varianti qiymatni o'zida ushlab turadi va `Rc<T>` `Ro'yxat`ni ko'rsatadi. `a`ning egaligini olishning o'rniga `b`ni yaratganimizda, `a` ni ushlab  turgan `Rc<List>`ni klonlaymiz, shu bilan birga referenslar sonini birdan ikkiga ko'paytiramiz va `Rc<List>`dagi ma'lumotlarning egaligini ulashish uchun `a` va `b`ga ruxsat beramiz. referenslar sonini ikkidan uchga ko'paytirgan holda, `c`ni yaratayotganimizda `a`ni ham klonlaymiz. `Rc::clone`ni har safar chaqirganimizda, `Rc<List>` tarkibidagi ma'lumotlarining referenslari soni oshiriladi, zero referenslar paydo bo'lmagungacha ma'lumotlar tozalanmaydi.
 
 <span class="filename">Filename: src/main.rs</span>