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We ofter use movewith closures passed to thread::spawnbecase the closure will then take ownership of the values it uses from the environment, thus tra 阅读全文
posted @ 2024-03-12 15:34
Zhentiw
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Code from previous blog: use std::thread; use std::time::Duration; fn main() { thread::spawn(|| { for i in 1..10 { println!("hi number {} from the spa 阅读全文
posted @ 2024-03-08 20:49
Zhentiw
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We use spawnto create a new thread: use std::thread; use std::time::Duration; fn main() { thread::spawn(|| { for i in 1..10 { println!("hi number {} f 阅读全文
posted @ 2024-03-08 20:34
Zhentiw
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https://doc.rust-lang.org/std/keyword.ref.html struct Point { x: i32, y: i32, } fn main() { let y: Option<Point> = Some(Point { x: 100, y: 200 }); mat 阅读全文
posted @ 2024-03-04 21:57
Zhentiw
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https://doc.rust-lang.org/rust-by-example/flow_control/if_let.htmlhttps://doc.rust-lang.org/rust-by-example/flow_control/while_let.html If let: #[test 阅读全文
posted @ 2024-03-04 21:53
Zhentiw
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// Using catch-all error types like `Box<dyn error::Error>` isn't recommended // for library code, where callers might want to make decisions based on 阅读全文
posted @ 2024-03-04 21:28
Zhentiw
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use std::error; use std::fmt; use std::num::ParseIntError; fn main() -> Result<(), Box<dyn error::Error>> { let pretend_user_input = "42"; let x: i64 阅读全文
posted @ 2024-03-04 21:15
Zhentiw
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#[derive(PartialEq, Debug)] enum CreationError { Negative, Zero, } #[derive(PartialEq, Debug)] struct PositiveNonzeroInteger(u64); impl PositiveNonzer 阅读全文
posted @ 2024-03-01 16:14
Zhentiw
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use std::num::ParseIntError; fn main() -> Result<(), ParseIntError> { let mut token = 100; let pretend_user_input = "8"; let cost = total_cost(pretend 阅读全文
posted @ 2024-03-01 16:08
Zhentiw
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pub fn generate_nametag_text(name: String) -> Result<String, String> { if name.is_empty() { // Empty names aren't allowed. Err(String::from("`name` wa 阅读全文
posted @ 2024-03-01 15:49
Zhentiw
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