Struct std::mem::Discriminant

1.21.0 · source · [−]

pub struct Discriminant<T>(_);

Expand description

Opaque type representing the discriminant of an enum.

See the discriminant function in this module for more information.

Trait Implementations

impl<T> Clone for Discriminant<T>

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fn clone(&self) -> Discriminant<T>

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Returns a copy of the value. Read more

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

1.0.0 · source

Performs copy-assignment from source. Read more

impl<T> Debug for Discriminant<T>

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

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Formats the value using the given formatter. Read more

impl<T> Hash for Discriminant<T>

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fn hash<H>(&self, state: &mut H) where
H: Hasher,

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Feeds this value into the given Hasher. Read more

fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

1.3.0 · source

Feeds a slice of this type into the given Hasher. Read more

impl<T> PartialEq<Discriminant<T>> for Discriminant<T>

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fn eq(&self, rhs: &Discriminant<T>) -> bool

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This method tests for self and other values to be equal, and is used by ==. Read more

fn ne(&self, other: &Rhs) -> bool

1.0.0 · source

This method tests for !=.

impl<T> Copy for Discriminant<T>

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impl<T> Eq for Discriminant<T>

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Auto Trait Implementations

impl<T> RefUnwindSafe for Discriminant<T> where
<T as DiscriminantKind>::Discriminant: RefUnwindSafe,

impl<T> Send for Discriminant<T>

impl<T> Sync for Discriminant<T>

impl<T> Unpin for Discriminant<T>

impl<T> UnwindSafe for Discriminant<T> where
<T as DiscriminantKind>::Discriminant: UnwindSafe,

Blanket Implementations

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

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fn type_id(&self) -> TypeId

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Gets the TypeId of self. Read more

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

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fn borrow(&self) -> &T

const: unstable · source

Immutably borrows from an owned value. Read more

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

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

const: unstable · source

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

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fn from(t: T) -> T

const: unstable · source

Returns the argument unchanged.

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

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fn into(self) -> U

const: unstable · source

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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

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type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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

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

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🔬 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 for T where
U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.

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

const: unstable · source

Performs the conversion.

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

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type Error = >::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, >::Error>

const: unstable · source

Performs the conversion.

Struct std::mem::Discriminant

Trait Implementations

impl<T> Clone for Discriminant<T>

fn clone(&self) -> Discriminant<T>

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

impl<T> Debug for Discriminant<T>

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

impl<T> Hash for Discriminant<T>

fn hash<H>(&self, state: &mut H) where H: Hasher,

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher,

impl<T> PartialEq<Discriminant<T>> for Discriminant<T>

fn eq(&self, rhs: &Discriminant<T>) -> bool

fn ne(&self, other: &Rhs) -> bool

impl<T> Copy for Discriminant<T>

impl<T> Eq for Discriminant<T>

Auto Trait Implementations

impl<T> RefUnwindSafe for Discriminant<T> where <T as DiscriminantKind>::Discriminant: RefUnwindSafe,

impl<T> Send for Discriminant<T>

impl<T> Sync for Discriminant<T>

impl<T> Unpin for Discriminant<T>

impl<T> UnwindSafe for Discriminant<T> where <T as DiscriminantKind>::Discriminant: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Owned = T

fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

fn hash<H>(&self, state: &mut H) where
H: Hasher,

fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

impl<T> RefUnwindSafe for Discriminant<T> where
<T as DiscriminantKind>::Discriminant: RefUnwindSafe,

impl<T> UnwindSafe for Discriminant<T> where
<T as DiscriminantKind>::Discriminant: UnwindSafe,

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

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

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

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

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

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

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