use dialoguer::{theme::ColorfulTheme, Password}; fn main() { let password = Password::with_theme(&ColorfulTheme::default()) .with_prompt("Password") .with_confirmation("Repeat password", "Error: the passwords don't match.") .validate_with(|input: &String| -> Result<(), &str> { if input.chars().count() > 3 { Ok(()) } else { Err("Password must be longer than 3") } }) .interact() .unwrap(); println!( "Your password is {} characters long", password.chars().count() ); }