Trait Console 

pub trait Console {
    // Required methods
    fn say(&mut self, line: &str) -> Result<()>;
    fn ask(&mut self, question: &str, default: Option<&str>) -> Result<String>;
    fn ask_secret(&mut self, question: &str) -> Result<String>;
}

The terminal, or a scripted stand-in.

Required Methods

fn say(&mut self, line: &str) -> Result<()>

Print a line.

fn ask(&mut self, question: &str, default: Option<&str>) -> Result<String>

Ask a question and read one line.

default is shown in the prompt and returned when the answer is empty, so pressing Enter accepts it.

fn ask_secret(&mut self, question: &str) -> Result<String>

Ask for a secret and read one line without echoing it.

An empty answer is legitimate and means “skip”, so this cannot signal refusal by returning an error.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<W: Write> Console for Terminal<'_, W>