mirror of
https://github.com/clap-rs/clap
synced 2024-09-20 22:41:52 +00:00
32b5520ff1
mitsuhiko immediately jumped into the examples and got tripped up by the lack of documentation on feature flags needed. I limited this to just the root ones because the rest are in a more proper tutorial that steps through it all.
26 lines
902 B
Rust
26 lines
902 B
Rust
// Note: this requires the `cargo` feature
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use clap::{app_from_crate, arg};
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fn main() {
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let matches = app_from_crate!()
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.arg(arg!(eff: -f))
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.arg(arg!(pea: -p <PEAR>).required(false))
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.arg(
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arg!(slop: [SLOP]).multiple_occurrences(true).last(true), // Indicates that `slop` is only accessible after `--`.
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)
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.get_matches();
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// This is what will happen with `myprog -f -p=bob -- sloppy slop slop`...
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println!("-f used: {:?}", matches.is_present("eff")); // -f used: true
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println!("-p's value: {:?}", matches.value_of("pea")); // -p's value: Some("bob")
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println!(
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"'slops' values: {:?}",
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matches
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.values_of("slop")
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.map(|vals| vals.collect::<Vec<_>>())
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.unwrap_or_default()
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); // 'slops' values: Some(["sloppy", "slop", "slop"])
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// Continued program logic goes here...
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}
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