Function clap_num::maybe_hex_range

pub fn maybe_hex_range<T: Num + Unsigned>(
    s: &str, 
    min: T, 
    max: T
) -> Result<T, String> where
    <T as Num>::FromStrRadixErr: Display,
    <T as FromStr>::Err: Display,
    T: FromStr,
    T: Display,
    T: Ord, 

Validates an unsigned integer value that can be base-10 or base-16 within a range.

This effectively combines maybe_hex and number_range, see the documentation for those functions for details.

Example

This extends the example in maybe_hex, and only allows a range of addresses from 0x100 to 0x200.

use clap::Parser;
use clap_num::maybe_hex_range;

fn address_in_range(s: &str) -> Result<u32, String> {
    maybe_hex_range(s, 0x100, 0x200)
}

#[derive(Parser)]
struct Args {
    #[clap(short, long, parse(try_from_str=address_in_range))]
    address: u32,
}