[−][src]Struct triomphe::UniqueArc
An Arc
that is known to be uniquely owned
When Arc
s are constructed, they are known to be
uniquely owned. In such a case it is safe to mutate
the contents of the Arc
. Normally, one would just handle
this by mutating the data on the stack before allocating the
Arc
, however it's possible the data is large or unsized
and you need to heap-allocate it earlier in such a way
that it can be freely converted into a regular Arc
once you're
done.
UniqueArc
exists for this purpose, when constructed it performs
the same allocations necessary for an Arc
, however it allows mutable access.
Once the mutation is finished, you can call .shareable()
and get a regular Arc
out of it.
let data = [1, 2, 3, 4, 5]; let mut x = UniqueArc::new(data); x[4] = 7; // mutate! let y = x.shareable(); // y is an Arc<T>
Methods
impl<T> UniqueArc<T>
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pub fn new(data: T) -> Self
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Construct a new UniqueArc
pub fn shareable(self) -> Arc<T>
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Convert to a shareable Arc
Trait Implementations
Auto Trait Implementations
impl<T: ?Sized> Send for UniqueArc<T> where
T: Send + Sync,
T: Send + Sync,
impl<T: ?Sized> Sync for UniqueArc<T> where
T: Send + Sync,
T: Send + Sync,
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,