Struct triomphe::ArcUnion[−][src]

pub struct ArcUnion<A, B> { /* fields omitted */ }

Expand description

A tagged union that can represent Arc<A> or Arc while only consuming a single word. The type is also NonNull, and thus can be stored in an Option without increasing size.

This is functionally equivalent to enum ArcUnion<A, B> { First(Arc<A>), Second(Arc) but only takes up up a single word of stack space.

This could probably be extended to support four types if necessary.

Implementations

impl<A, B> ArcUnion<A, B>[src]

pub fn ptr_eq(this: &Self, other: &Self) -> bool[src]

Returns true if the two values are pointer-equal.

pub fn borrow(&self) -> ArcUnionBorrow<'_, A, B>[src]

Returns an enum representing a borrow of either A or B.

pub fn from_first(other: Arc<A>) -> Self[src]

Creates an ArcUnion from an instance of the first type.

pub fn from_second(other: Arc) -> Self[src]

Creates an ArcUnion from an instance of the second type.

pub fn is_first(&self) -> bool[src]

Returns true if this ArcUnion contains the first type.

pub fn is_second(&self) -> bool[src]

Returns true if this ArcUnion contains the second type.

pub fn as_first(&self) -> Option<ArcBorrow<'_, A>>[src]

Returns a borrow of the first type if applicable, otherwise None.

pub fn as_second(&self) -> Option<ArcBorrow<'_, B>>[src]

Returns a borrow of the second type if applicable, otherwise None.

Trait Implementations

impl<A, B> Clone for ArcUnion<A, B>[src]

fn clone(&self) -> Self[src]

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

impl<A: Debug, B: Debug> Debug for ArcUnion<A, B>[src]

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

Formats the value using the given formatter. Read more

impl<A, B> Drop for ArcUnion<A, B>[src]

fn drop(&mut self)[src]

Executes the destructor for this type. Read more

impl<A: PartialEq, B: PartialEq> PartialEq<ArcUnion<A, B>> for ArcUnion<A, B>[src]

fn eq(&self, other: &Self) -> bool[src]

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

#[must_use]
fn ne(&self, other: &Rhs) -> bool

1.0.0 [src]

This method tests for !=.

impl<A: Sync + Send, B: Send + Sync> Send for ArcUnion<A, B>[src]

impl<A: Sync + Send, B: Send + Sync> Sync for ArcUnion<A, B>[src]

Auto Trait Implementations

impl<A, B> RefUnwindSafe for ArcUnion<A, B> where
    A: RefUnwindSafe,
    B: RefUnwindSafe,

impl<A, B> Unpin for ArcUnion<A, B> where
    A: Unpin,
    B: Unpin,

impl<A, B> UnwindSafe for ArcUnion<A, B> where
    A: UnwindSafe,
    B: UnwindSafe,

Blanket Implementations

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

[src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

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

[src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

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

[src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

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

pub fn from(t: T) -> T[src]

Performs the conversion.

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

[src]

pub fn into(self) -> U[src]

Performs the conversion.

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

[src]

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

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

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

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

recently added

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

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.

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

Performs the conversion.

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

[src]

type Error = >::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, >::Error>[src]

Performs the conversion.