首页rust assert!(n != 0&& m != 0);

rust assert!(n != 0&& m != 0);

时间: 2024-02-05 09:04:46 浏览: 87

assert2-rs:由Catch2启发的Rust的assert！（）和check！（）宏

断言2 万能的和宏，受启发。默认情况下，还有一个宏在优化的版本中被禁用。作为顶部的樱桃，有一个宏，可让您在捕获模式的一部分的同时对其进行测试。为什么使用这些宏？这些宏相对于标准库中的断言提供了一些好处：宏会解析您的表达式以检测比较并相应地调整错误消息。不再需要assert_eq或assert_ne ，只需编写assert!(1 + 1 == 2) ，甚至assert_ne assert!(1 + 1 == 2) assert!(1 + 1 > 1) ！您可以测试模式匹配： assert!(let Err(_) = File::open("/non/existing/file")) 。您可以使用let_assert!(...)宏捕获模式的某些部分以进行进一步测试。 check宏可用于在恐慌之前执行多次检查。断言失败时，宏将提供更多信息。彩色故障消息！宏

This is a Rust code snippet that uses the `assert!` macro to check that a variable `n` is not equal to zero. The `assert!` macro is part of Rust's testing library and is used to assert that a certain condition is true during testing. If the condition is not true, the program will panic and the test will fail. In this case, the code is checking that `n` is not zero. This could be useful in many scenarios, such as when performing division by `n` or when `n` is used as a denominator in a fraction. If `n` were zero, the program would encounter a runtime error or produce unexpected results. By using `assert!`, the code can catch this error early during testing and prevent it from causing issues in production.

阅读全文