Struct uucore::error::ExitCode

pub struct ExitCode(pub i32);

A special error type that does not print any message when returned from uumain. Especially useful for porting utilities to using UResult.

There are two ways to construct an ExitCode:

use uucore::error::{ExitCode, UResult};
// Explicit
let res: UResult<()> = Err(ExitCode(1).into());

// Using into on `i32`:
let res: UResult<()> = Err(1.into());

This type is especially useful for a trivial conversion from utils returning i32 to returning UResult.

Tuple Fields

0: i32

Implementations

impl ExitCode

pub fn new(code: i32) -> Box<dyn UError>

Trait Implementations

impl Debug for ExitCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ExitCode

fn fmt(&self, _: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Error for ExitCode

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl UError for ExitCode

fn code(&self) -> i32

Error code of a custom error.

fn usage(&self) -> bool

Print usage help to a custom error.