update

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

@@ -83,18 +83,8 @@ Ushbu kod quyidagini print qiladi:
 
 `a`da `Rc<List>`ning referens soni 1 ekanligini ko'rishimiz mumkin; keyinchalik har safar biz `clone` ni chaqirganimizda, son 1ga ortib boraveradi. `c` o'z scope(doirasi)dan chiqib ketganida,referens soni 1ga kamayadi. `Rc::clone` funksiyasi yordamida referens sonini ortirish uchun chaqirganimizdek referens soni kamaytirish uchun hech qanday funksiyasini chaqirishimiz kerak bo'lmaydi, chunki `Drop` traitining implementatsiyasi `Rc<T>` qiymati o'z scope(doirasi)dan chiqqanda avtomatik ravishda referens sonini kamaytiradi. 
 
-`main` oxirida `b` va keyin `a`larning scope(doirasidan) chiqib, son/hisob 0ga tenglashib, `Rc<List>` to'liq tozalanganligini biz ushbu misolda ko'ra olmaymiz. Using `Rc<T>` allows a single value to have multiple owners, and the count ensures that the value remains valid as long as any of the owners
-still exist.
+`main` oxirida `b` va keyin `a`larning scope(doirasidan) chiqib, son/hisob 0ga tenglashib, `Rc<List>` to'liq tozalanganligini biz ushbu misolda ko'ra olmaymiz. `Rc<T>`ni ishlatish yordamida bitta qiymat ko'p egalarga ega bo'lishi mumkin, hamda son/hisob qiymat egalaridan biri bor bo'lgunga qadar yaroqliligini tekshirib turadi.
 
-
-
-Via immutable references, `Rc<T>` allows you to share data between multiple
-parts of your program for reading only. If `Rc<T>` allowed you to have multiple
-mutable references too, you might violate one of the borrowing rules discussed
-in Chapter 4: multiple mutable borrows to the same place can cause data races
-and inconsistencies. But being able to mutate data is very useful! In the next
-section, we’ll discuss the interior mutability pattern and the `RefCell<T>`
-type that you can use in conjunction with an `Rc<T>` to work with this
-immutability restriction.
+ O'zgarmas o'zgaruvchilar yordamida, `Rc<T>` o'qish uchun ma'lumotlarni dasturning ko'p joylari orasida ulashish imkonini beradi. Agar `Rc<T>` ko'p o'zgaruvchan referenslarga ega bo'lish imkonini bergan bo'lsa, siz 4-Bo'limda ko'rsatilganidek borrowing qoidalarini birini buzishingiz mumkin: ko'p o'zgaruchilar bir xil joyga borrow qilib data race va nomuvofiqliklarga sabab bo'lishi mumkin. Lekin ma'lumotni o'zrgatira olish foydalidir! keyingi bo'limda, biz ichki o'zgaruvchanlik shakli(pattern) va `RefCell<T>` turi bilan `Rc<T>` yordamida o'zgarmaslik cheklovi bilan ishlash ko'rib chiqamiz.
 
 [preventing-ref-cycles]: ch15-06-reference-cycles.html#preventing-reference-cycles-turning-an-rct-into-a-weakt