Struct std::process::ExitCode

source · [−]

pub struct ExitCode(_);

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

Expand description

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.

Implementations

impl ExitCode

pub const SUCCESS: ExitCode

🔬 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

🔬 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).

impl ExitCode

pub fn to_i32(self) -> i32

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

Convert an ExitCode into an i32

Trait Implementations

impl Clone for ExitCode

fn clone(&self) -> ExitCode

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for ExitCode

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

Formats the value using the given formatter. Read more

impl Termination for ExitCode

fn report(self) -> ExitCode

🔬 This is a nightly-only experimental API. (termination_trait_lib #43301)

Is called to get the representation of the value as status code. This status code is returned to the operating system. Read more

impl Copy for ExitCode

Auto Trait Implementations

impl RefUnwindSafe for ExitCode

impl Send for ExitCode

impl Sync for ExitCode

impl Unpin for ExitCode

impl UnwindSafe for ExitCode

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Performs the conversion.

impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Performs the conversion.

impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

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

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.