fn print_args_error(e: ArgsError) -> io::Result<()> {
    match e {
        ArgsError::Parse(ref e) =>
            // In case of generic parse error,
            // message provided by the clap library will be the usage string.
            writeln!(&mut io::stderr(), "{}", e.message),
        e => {
            writeln!(&mut io::stderr(), "Failed to parse arguments: {}", e)
        }
    }
}
// Print an error that may occur while parsing arguments.
Print an error that may occur while parsing arguments.
Print an error that may occur while parsing arguments .
fn print_args_error(e: ArgsError) -> io::Result<()> {
    match e {
        ArgsError::Parse(ref e) =>
            // In case of generic parse error,
            // message provided by the clap library will be the usage string.
            writeln!(&mut io::stderr(), "{}", e.message),
        e => {
            writeln!(&mut io::stderr(), "Failed to parse arguments: {}", e)
        }
    }
}
fn print_args_error ( e : ArgsError ) -> io :: Result < ( ) > { match e { ArgsError :: Parse ( ref e ) => // In case of generic parse error, // message provided by the clap library will be the usage string. writeln ! ( mut io stderr ( ) " " e message ) , e => { writeln ! ( mut io stderr ( ) " " e ) } } }
Print an error that may occur while parsing arguments.
Print an error that may occur while parsing arguments .
e
ArgsError