Enum bimap::Overwritten

``````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.

Variants§

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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
1.0.0 · source§

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<Overwritten<L, R>> 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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Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source§

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 Twhere 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 Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.