Enum bimap::Overwritten

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pub enum Overwritten<L, R> {
    Neither,
    Left(L, R),
    Right(L, R),
    Pair(L, R),
    Both((L, R), (L, R)),
}
Expand description

The previous left-right pairs, if any, that were overwritten by a call to the insert method of a bimap.

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Neither

Neither the left nor the right value previously existed in the bimap.

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Left(L, R)

The left value existed in the bimap, and the previous left-right pair is returned.

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Right(L, R)

The right value existed in the bimap, and the previous left-right pair is returned.

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Pair(L, R)

The left-right pair already existed in the bimap, and the previous left-right pair is returned.

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Both((L, R), (L, R))

Both the left and the right value existed in the bimap, but as part of separate pairs. The first tuple is the left-right pair of the previous left value, and the second is the left-right pair of the previous right value.

Implementations§

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impl<L, R> Overwritten<L, R>

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pub fn did_overwrite(&self) -> bool

Returns a boolean indicating if the Overwritten variant implies any values were overwritten.

This method is true for all variants other than Neither.

§Examples
use bimap::{BiMap, Overwritten};

let mut bimap = BiMap::new();
assert!(!bimap.insert('a', 1).did_overwrite());
assert!(bimap.insert('a', 2).did_overwrite());

Trait Implementations§

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impl<L: Clone, R: Clone> Clone for Overwritten<L, R>

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fn clone(&self) -> Overwritten<L, R>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<L: Debug, R: Debug> Debug for Overwritten<L, R>

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

Formats the value using the given formatter. Read more
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impl<L: Hash, R: Hash> Hash for Overwritten<L, R>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<L: PartialEq, R: PartialEq> PartialEq for Overwritten<L, R>

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fn eq(&self, other: &Overwritten<L, R>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<L: Copy, R: Copy> Copy for Overwritten<L, R>

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impl<L: Eq, R: Eq> Eq for Overwritten<L, R>

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impl<L, R> StructuralPartialEq for Overwritten<L, R>

Auto Trait Implementations§

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impl<L, R> Freeze for Overwritten<L, R>
where L: Freeze, R: Freeze,

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impl<L, R> RefUnwindSafe for Overwritten<L, R>

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impl<L, R> Send for Overwritten<L, R>
where L: Send, R: Send,

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impl<L, R> Sync for Overwritten<L, R>
where L: Sync, R: Sync,

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impl<L, R> Unpin for Overwritten<L, R>
where L: Unpin, R: Unpin,

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impl<L, R> UnwindSafe for Overwritten<L, R>
where L: UnwindSafe, 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

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