Trait Die 

pub trait Die<T> {
    // Required methods
    fn die(self, msg: &str) -> T;
    fn die_code(self, msg: &str, exit_code: i32) -> T;
}

Die is a trait implemented on Result and Option to make exiting with messages and codes easy

Required Methods

fn die(self, msg: &str) -> T

Unwraps a Result or Option, yielding the content of an Ok or Some.

Exits

Calls process::exit(1) if the value is an Err or None, after printing the passed message to stderr.

Examples

Basic usage:

let x: Result<u32, &str> = Err("emergency failure");
x.die("strange error"); // prints `strange error` to stderr then exits with code 1

let x: Option<u32> = None;
x.die("strange error"); // prints `strange error` to stderr then exits with code 1

fn die_code(self, msg: &str, exit_code: i32) -> T

Unwraps a Result or Option, yielding the content of an Ok or Some.

Exits

Calls process::exit(exit_code) if the value is an Err or None, after printing the passed message to stderr.

Examples

Basic usage:

let x: Result<u32, &str> = Err("emergency failure");
x.die_code("strange", 3); // prints `strange` to stderr then exits with code 3

let x: Option<u32> = None;
x.die_code("strange", 3); // prints `strange` to stderr then exits with code 3

Implementations on Foreign Types

impl<T> Die<T> for Option<T>

fn die(self, msg: &str) -> T

fn die_code(self, msg: &str, exit_code: i32) -> T

impl<T, E> Die<T> for Result<T, E>

fn die(self, msg: &str) -> T

fn die_code(self, msg: &str, exit_code: i32) -> T

Implementors