通过 Cargo 传递程序参数 [英] Passing program arguments through Cargo

问题描述

我有一些示例代码目前正在使用 getopts，它被指定为 getopts代码>Cargo.toml

I have some sample code that is currently making use of getopts which is specified as a dependency in Cargo.toml

[dependencies]
getopts = "0.2"

但是我似乎无法通过 Cargo 传递参数 (-t, --test)(例如 cargo run --test)出于显而易见的原因.

However I can not seem to pass argument (-t, --test) through Cargo (e.g. cargo run --test) for obvious reasons.

因为我已经指定了外部依赖，尝试运行 rustc src/main.rs --test 也不会工作:

Since I have specified that external dependency, trying to run rustc src/main.rs --test won't work either:

src/main.rs:2:5: 2:21 error: unresolved import `getopts::Options`. There is no `Options` in `getopts`
src/main.rs:2 use getopts::Options;
              ^~~~~~~~~~~~~~~~
error: aborting due to previous error

是否有其他方法可以实现这一目标或目前有一些常见的替代方法?

Is there another way to achieve this or some common alternative for the time being?

推荐答案

您可以使用 -- 将尾随参数传递给 cargo run:

You can pass trailing arguments to cargo run using --:

cargo run -- --test

从 man 页面:

所有尾随参数都传递给要运行的二进制文件.如果你路过Cargo 和二进制文件的参数， -- 之后的那些转到二进制文件，去 Cargo 之前的那些.

All of the trailing arguments are passed to the binary to run. If you're passing arguments to both Cargo and the binary, the ones after -- go to the binary, the ones before go to Cargo.

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