cargo comandline arguments parse minus float

Asked Oct 14 '22 at 06:36

Active Oct 14 '22 at 06:55

Viewed 50 times

How to parse a minus float in cargo? like

#[test]
fn test1() {
    let args: Vec<String> = env::args().collect();
    println!("{:?}", args);
}

and run it with

cargo test --release test1 -- -1.0 --nocapture --exact
cargo test --release test1 -- '-1.0' --nocapture --exact
cargo test --release test1 -- "-1.0" --nocapture --exact
cargo test --release test1 -- `-1.0` --nocapture --exact
/xxx/test_bin test1 -1.0 --nocapture

It says error: Unrecognized option: '1' with rustc 1.64.0-nightly (6dba4ed21 2022-07-09)

edited Oct 14 '22 at 06:55

asked Oct 14 '22 at 06:36

YNX

What are you trying to do? To which program you want to pass minus one? – Aleksander Krauze Oct 14 '22 at 06:38
Looks like the argument is passed to the Rust standard test harness. Not sure how it is expected to be used, however. – Cerberus Oct 14 '22 at 06:40
2

The test harness needs to parse every argument, so you can't use command line arguments yourself – mousetail Oct 14 '22 at 06:46
1

Maybe relavent: https://stackoverflow.com/questions/65791697/passing-custom-command-line-arguments-to-a-rust-test – mousetail Oct 14 '22 at 06:48
what do you mean by `you can't use command line arguments yourself`? – YNX Oct 18 '22 at 07:31

cargo comandline arguments parse minus float

0 Answers0