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https://github.com/clap-rs/clap
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ee3eab1614
Adds a more in depth validator to validate that the port is in range in the derive and builder tutorial (section 4.2). This supersedes #3416
15 lines
262 B
Rust
15 lines
262 B
Rust
use clap::Parser;
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#[derive(Parser)]
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#[clap(author, version, about, long_about = None)]
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struct Cli {
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/// Network port to use
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#[clap(parse(try_from_str))]
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port: usize,
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}
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fn main() {
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let cli = Cli::parse();
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println!("PORT = {}", cli.port);
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}
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