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🔍 Вопрос: что выведет этот код на Rust?

fn main() {
let mut v = vec![1, 2, 3];
let first = &v[0];

v.push(4);

println!("First: {}", first);
}

---
✔️ Правильный ответ: Ошибка компиляции
---
🧠 Разбор:
- let first = &v[0];иммутабельная ссылка
- v.push(4);мутабельная операция

Rust запрещает это: нельзя иметь и иммутабельную ссылку, и мутабельную операцию одновременно!

📚 Rust выдаст ошибку компиляции:
error[E0502]: cannot borrow v as mutable because it is also borrowed as immutable

💥 Подвох: в C++, Go или JS это бы сработало.

Rust завернет такое на стадии компиляции

@rust_code



tg-me.com/rust_code/925
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🔍 Вопрос: что выведет этот код на Rust?


fn main() {
let mut v = vec![1, 2, 3];
let first = &v[0];

v.push(4);

println!("First: {}", first);
}

---
✔️ Правильный ответ: Ошибка компиляции
---
🧠 Разбор:
- let first = &v[0];иммутабельная ссылка
- v.push(4);мутабельная операция

Rust запрещает это: нельзя иметь и иммутабельную ссылку, и мутабельную операцию одновременно!

📚 Rust выдаст ошибку компиляции:
error[E0502]: cannot borrow v as mutable because it is also borrowed as immutable

💥 Подвох: в C++, Go или JS это бы сработало.

Rust завернет такое на стадии компиляции

@rust_code

BY Rust


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The global forecast for the Asian markets is murky following recent volatility, with crude oil prices providing support in what has been an otherwise tough month. The European markets were down and the U.S. bourses were mixed and flat and the Asian markets figure to split the difference.The TSE finished modestly lower on Friday following losses from the financial shares and property stocks.For the day, the index sank 15.09 points or 0.49 percent to finish at 3,061.35 after trading between 3,057.84 and 3,089.78. Volume was 1.39 billion shares worth 1.30 billion Singapore dollars. There were 285 decliners and 184 gainers.

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