mirror of
https://github.com/clap-rs/clap
synced 2024-12-13 22:32:33 +00:00
85f541d789
Impact: - Binary size: 556.6 KiB to 578.4 KiB - build time: 6.4950 us (7% slower) - parse time: 7.7256 us - parse sc time: 8.1580 us (5% faster) Fixes #1041 Fixes #2150
25 lines
613 B
Rust
25 lines
613 B
Rust
use clap::{arg, command, value_parser};
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fn main() {
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let matches = cmd().get_matches();
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// Note, it's safe to call unwrap() because the arg is required
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let port: usize = *matches
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.get_one::<usize>("PORT")
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.expect("'PORT' is required and parsing will fail if its missing");
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println!("PORT = {}", port);
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}
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fn cmd() -> clap::Command {
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command!() // requires `cargo` feature
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.arg(
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arg!(<PORT>)
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.help("Network port to use")
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.value_parser(value_parser!(usize)),
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)
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}
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#[test]
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fn verify_cmd() {
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cmd().debug_assert();
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}
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