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Struct std::process::ExitCode

pub struct ExitCode(_);
🔬 This is a nightly-only experimental API. (process_exitcode_placeholder #48711)

This type represents the status code a process can return to its parent under normal termination.

Numeric values used in this type don't have portable meanings, and different platforms may mask different amounts of them.

For the platform's canonical successful and unsuccessful codes, see the SUCCESS and FAILURE associated items.

Warning: While various forms of this were discussed in RFC #1937, it was ultimately cut from that RFC, and thus this type is more subject to change even than the usual unstable item churn.

Methods

impl ExitCode[src]

pub const SUCCESS: ExitCode[src]

🔬 This is a nightly-only experimental API. (process_exitcode_placeholder #48711)

The canonical ExitCode for successful termination on this platform.

Note that a ()-returning main implicitly results in a successful termination, so there's no need to return this from main unless you're also returning other possible codes.

pub const FAILURE: ExitCode[src]

🔬 This is a nightly-only experimental API. (process_exitcode_placeholder #48711)

The canonical ExitCode for unsuccessful termination on this platform.

If you're only returning this and SUCCESS from main, consider instead returning Err(_) and Ok(()) respectively, which will return the same codes (but will also eprintln! the error).

Trait Implementations

impl Termination for ExitCode[src]

impl Debug for ExitCode[src]

impl Copy for ExitCode[src]

impl Clone for ExitCode[src]

fn clone_from(&mut self, source: &Self)[src]1.0.0

Performs copy-assignment from source. Read more

Auto Trait Implementations

impl UnwindSafe for ExitCode

impl RefUnwindSafe for ExitCode

impl Unpin for ExitCode

impl Send for ExitCode

impl Sync for ExitCode

Blanket Implementations

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> From<T> for T[src]

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

ⓘImportant traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
    F: Unpin + Future + ?Sized, 
    type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized, 
    type Item = <I as Iterator>::Item;
impl<'_, R: Read + ?Sized> Read for &'_ mut R
impl<'_, W: Write + ?Sized> Write for &'_ mut W

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

ⓘImportant traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
    F: Unpin + Future + ?Sized, 
    type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized, 
    type Item = <I as Iterator>::Item;
impl<'_, R: Read + ?Sized> Read for &'_ mut R
impl<'_, W: Write + ?Sized> Write for &'_ mut W

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/process/struct.ExitCode.html