input_macro

Function read_and_parse_with_prompt

Source 
pub fn read_and_parse_with_prompt<T: FromStr>(
    prompt: &str,
) -> Result<T, InputError<T::Err>>
where
    T::Err: Debug + Display,
Expand description

Like read_and_parse, but prints a prompt before reading.

This function is useful for interactive programs. It prints the provided prompt, then waits for user input. The input is then parsed into T or yields an error.

§Errors

Returns InputError::Io on read errors.
Returns InputError::Parse if the input cannot be parsed into T.

§Examples

let value: i32 = read_and_parse_with_prompt("Enter a number: ").unwrap();
println!("You entered: {}", value);