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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

www.tg-me.com/nl/Rust/com.rust_code/925

2.9K viewsApr 23 at 11:02

tg-me.com/rust_code/925

Create: 2025-04-23
Last Update: 2025-06-24 20:52:17

🔍 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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Date: 2025-06-24| Rust

Spiking bond yields driving sharp losses in tech stocks

A spike in interest rates since the start of the year has accelerated a rotation out of high-growth technology stocks and into value stocks poised to benefit from a reopening of the economy. The Nasdaq has fallen more than 10% over the past month as the Dow has soared to record highs, with a spike in the 10-year US Treasury yield acting as the main catalyst. It recently surged to a cycle high of more than 1.60% after starting the year below 1%. But according to Jim Paulsen, the Leuthold Group's chief investment strategist, rising interest rates do not represent a long-term threat to the stock market. Paulsen expects the 10-year yield to cross 2% by the end of the year. A spike in interest rates and its impact on the stock market depends on the economic backdrop, according to Paulsen. Rising interest rates amid a strengthening economy "may prove no challenge at all for stocks," Paulsen said.

Start with a fresh view of investing strategy. The combination of risks and fads this quarter looks to be topping. That means the future is ready to move in.Likely, there will not be a wholesale shift. Company actions will aim to benefit from economic growth, inflationary pressures and a return of market-determined interest rates. In turn, all of that should drive the stock market and investment returns higher.

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