Zhentiw - 博客园

2024年2月26日

摘要： Structs contain data, but can also have logic. In this exercise we have defined the Package struct and we want to test some logic attached to it. #[de 阅读全文

posted @ 2024-02-26 02:51 Zhentiw 阅读(40) 评论(0) 推荐(0)

[Rust] Struct Update Syntax

摘要： https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html#creating-instances-from-other-instances-with-struct-update-syntax Similar to Javas 阅读全文

posted @ 2024-02-26 02:44 Zhentiw 阅读(28) 评论(0) 推荐(0)

2024年2月24日

[Rust] Converting Numbers with as

摘要： fn multiply(x: i64, y: u8) -> i64 { return x * (y as i64); } Here we convert u8to i64, which is possible since i64has a wider range than u8; but you c 阅读全文

posted @ 2024-02-24 19:01 Zhentiw 阅读(20) 评论(0) 推荐(0)

2024年2月23日

[Rust] Instantiating Classic, Tuple, and Unit structs

摘要： https://doc.rust-lang.org/book/ch05-01-defining-structs.html struct ColorClassicStruct { red: i32, green: i32, blue: i32 } struct ColorTupleStruct(i32 阅读全文

posted @ 2024-02-23 19:11 Zhentiw 阅读(32) 评论(0) 推荐(0)

[Rust] Accessing specific values in a tuple by index

摘要： fn main() { let cat = ("Furry McFurson", 3.5); let (name, age) = cat; println!("{} is {} years old.", name, age); } Example 2: #[test] fn indexing_tup 阅读全文

posted @ 2024-02-23 19:04 Zhentiw 阅读(28) 评论(0) 推荐(0)

[Rust] Create an array of numbers by using Range

摘要： fn main() { let a = 0..100; if a.len() >= 100 { println!("Wow, that's a big array!"); } else { println!("Meh, I eat arrays like that for breakfast."); 阅读全文

posted @ 2024-02-23 18:57 Zhentiw 阅读(32) 评论(0) 推荐(0)

[Rust Unit testing] test should_panic

摘要： struct Rectangle { width: i32, height: i32 } impl Rectangle { // Only change the test functions themselves pub fn new(width: i32, height: i32) -> Self 阅读全文

posted @ 2024-02-23 18:50 Zhentiw 阅读(56) 评论(0) 推荐(0)

[Rust Unit testing] assert & assert_eq

摘要： pub fn is_even(num: i32) -> bool { num % 2 == 0 } /* This attribute indicates that the following module is a conditional compilation module that shoul 阅读全文

posted @ 2024-02-23 18:46 Zhentiw 阅读(46) 评论(0) 推荐(0)

[Rust] Implicitly returning values from functions

摘要： Code has error: fn main() { let answer = square(3); println!("The square of 3 is {}", answer); } fn square(num: i32) -> i32 { num * num; } Error: ⚠️ C 阅读全文

posted @ 2024-02-23 15:39 Zhentiw 阅读(30) 评论(0) 推荐(0)

[Rust] Constants

摘要： Constants variable always need to be annotated: const NUMBER: i32 = 3; fn main() { println!("Number {}", NUMBER); } 阅读全文

posted @ 2024-02-23 15:02 Zhentiw 阅读(19) 评论(0) 推荐(0)

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