clap/examples/tutorial_derive/03_05_default_values.rs

use clap::Parser;

#[derive(Parser)]
#[command(author, version, about, long_about = None)]
struct Cli {
    #[arg(default_value_t = 2020)]
    port: u16,
}

fn main() {
    let cli = Cli::parse();

    println!("port: {:?}", cli.port);
}
docs: Re-work examples This creates distinct tutorial examples from complex feature examples (more how-tos). Both sets are getting builder / derive versions (at least the critical ones). 2021-11-30 18:30:19 +00:00			`use clap::Parser;`

			`#[derive(Parser)]`
docs(derive): Update for new attributes 2022-09-02 20:37:23 +00:00			`#[command(author, version, about, long_about = None)]`
docs: Re-work examples This creates distinct tutorial examples from complex feature examples (more how-tos). Both sets are getting builder / derive versions (at least the critical ones). 2021-11-30 18:30:19 +00:00			`struct Cli {`
docs(tutorial): Provide better default_value_t example 2022-09-16 21:14:01 +00:00			`#[arg(default_value_t = 2020)]`
			`port: u16,`
docs: Re-work examples This creates distinct tutorial examples from complex feature examples (more how-tos). Both sets are getting builder / derive versions (at least the critical ones). 2021-11-30 18:30:19 +00:00			`}`

			`fn main() {`
			`let cli = Cli::parse();`

docs(tutorial): Provide better default_value_t example 2022-09-16 21:14:01 +00:00			`println!("port: {:?}", cli.port);`
docs: Re-work examples This creates distinct tutorial examples from complex feature examples (more how-tos). Both sets are getting builder / derive versions (at least the critical ones). 2021-11-30 18:30:19 +00:00			`}`