Enum dashmap::try_result::TryResult

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pub enum TryResult<R> {
    Present(R),
    Absent,
    Locked,
}
Expand description

Represents the result of a non-blocking read from a DashMap.

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Present(R)

The value was present in the map, and the lock for the shard was successfully obtained.

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Absent

The shard wasn’t locked, and the value wasn’t present in the map.

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Locked

The shard was locked.

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impl<R> TryResult<R>

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pub fn is_present(&self) -> bool

Returns true if the value was present in the map, and the lock for the shard was successfully obtained.

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pub fn is_absent(&self) -> bool

Returns true if the shard wasn’t locked, and the value wasn’t present in the map.

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pub fn is_locked(&self) -> bool

Returns true if the shard was locked.

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pub fn unwrap(self) -> R

If self is Present, returns the reference to the value in the map. Panics if self is not Present.

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pub fn try_unwrap(self) -> Option<R>

If self is Present, returns the reference to the value in the map. If self is not Present, returns None.

Trait Implementations§

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impl<R: Debug> Debug for TryResult<R>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<R> Freeze for TryResult<R>
where R: Freeze,

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impl<R> RefUnwindSafe for TryResult<R>
where R: RefUnwindSafe,

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impl<R> Send for TryResult<R>
where R: Send,

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impl<R> Sync for TryResult<R>
where R: Sync,

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impl<R> Unpin for TryResult<R>
where R: Unpin,

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impl<R> UnwindSafe for TryResult<R>
where R: UnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.