Rust \u5b66\u4e60\u7b14\u8bb0

\u8fd9\u662f\u4e00\u672c\u5173\u4e8e Rust \u7f16\u7a0b\u8bed\u8a00\u7684\u5b66\u4e60\u7b14\u8bb0\u3002

\u4e3a\u4ec0\u4e48\u5b66 Rust\uuff1f

• \u5185\u5b58\u5b89\u5168\uff0c\u65e0\u6570\u636e\u7ade\u4e89
• \u96f6\u6210\u672c\u62bd\u8c61
• \u9ad8\u6027\u80fd\uff0c\u65e0 GC
• \u4f18\u79c0\u7684\u5de5\u5177\u94fe (cargo)

graph TD
    A[\u5b66\u4e60 Rust] --> B[\u6240\u6709\u6743\u7cfb\u7edf]
    A --> C[\u7c7b\u578b\u7cfb\u7edf]
    A --> D[\u5e76\u53d1\u7f16\u7a0b]
    B --> E[\u7cbe\u901a Rust]
    C --> E
    D --> E

$$\text{Performance}=\frac{\text{Work Done}}{\text{Time Taken}}\times \text{Safety Factor}$$

\u5feb\u901f\u5f00\u59cb

\u4f7f\u7528 Cargo \u521b\u5efa\u7b2c\u4e00\u4e2a Rust \u9879\u76ee\u3002

\u5b89\u88c5 Rust

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

\u521b\u5efa\u9879\u76ee

cargo new hello_rust
cd hello_rust
cargo run

Hello World

fn main() {
    println!("Hello, Rust!");
}

\u6240\u6709\u6743\u7cfb\u7edf

Rust \u7684\u6838\u5fc3\u7279\u6027\u4e4b\u4e00\u5c31\u662f\u6240\u6709\u6743\u7cfb\u7edf\u3002

\u89c4\u5219

1. Rust \u4e2d\u6bcf\u4e2a\u503c\u90fd\u6709\u4e00\u4e2a\u6240\u6709\u8005 (owner)
2. \u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u6709\u4e00\u4e2a\u6240\u6709\u8005
3. \u5f53\u6240\u6709\u8005\u79bb\u5f00\u4f5c\u7528\u57df\u65f6\uff0c\u503c\u88ab\u4e22\u5f03

fn main() {
    let s1 = String::from("hello");
    let s2 = s1; // s1 \u7684\u6240\u6709\u6743\u8f6c\u79fb\u7ed9 s2

    // println!("{}", s1); // \u7f16\u8bd1\u9519\u8bef\uff01s1 \u5df2\u4e0d\u53ef\u7528
    println!("{}", s2); // OK
}

\u501f\u7528\u4e0e\u5f15\u7528

fn calculate_length(s: &String) -> usize {
    s.len()
}

fn main() {
    let s1 = String::from("hello");
    let len = calculate_length(&s1);
    println!("'{}' \u7684\u957f\u5ea6\u662f {}", s1, len);
}

$$\text{Borrow}\ne \text{Move}$$