LoopGuard

简单开发工具，用于防止无限循环。

安装

将此内容添加到您的 Cargo.toml

[dependencies]
loop_guard = "1.0.0"

用法

use loop_guard::LoopGuard;

fn main() {
    // This LoopGuard instance will prevent a loop from running more than 50 times.
    let mut guard = LoopGuard::new(50);

    // However, this for loop won't cause a panic, because it only loops 10 times.
    for _i in 0..10 {
        guard.protect()
    }

    // There isn't a way to "reset" a guard instance
    // If you need another guarded loop, create a new instance of LoopGuard
    // We'll make a new instance, this time with a custom panic message

    let mut guard_2 = LoopGuard::new(100).set_panic_message("Oh no! This failed!");

    // This (infinite) loop is protected by guard_2, and will panic after 100 runs
    loop {
        guard_2.protect();
    }
}

运行此代码

$ cargo run

结果

thread 'main' panicked at 'Oh no! This failed!', ...

...基本上就是这些。

许可证

LoopGuard 在 MIT 许可证条款下分发。