Struct Map

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pub struct Map<K: Hash + Ord, V> { /* private fields */ }
Expand description

A basic un-Spanned object/map, with Spanned children.

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impl<K: Hash + Ord, V> Map<K, V>

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pub fn new() -> Self

Makes a new empty Map.

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pub fn len(&self) -> usize

Returns the number of elements in the map.

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pub fn is_empty(&self) -> bool

true if the map contains no elements.

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pub fn clear(&mut self)

Clears the map, removing all elements.

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pub fn insert(&mut self, k: K, v: V) -> Option<V>

Inserts a key-value pair into the map, returning the replaced value, if any.

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pub fn entry(&mut self, key: K) -> Entry<'_, K, V>

Gets the given key’s corresponding entry in the map for in-place manipulation.

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pub fn contains_key<Q>(&self, key: &Q) -> bool
where Q: Eq + Ord + Hash + ?Sized, K: Borrow<Q>,

true if the map contains the given key.

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pub fn get<Q>(&self, key: &Q) -> Option<&V>
where Q: Eq + Ord + Hash + ?Sized, K: Borrow<Q>,

Return a reference to the value stored for key, if any.

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pub fn get_key_value<Q>(&self, key: &Q) -> Option<(&K, &V)>
where Q: Eq + Ord + Hash + ?Sized, K: Borrow<Q>,

Returns the key-value pair corresponding to the supplied key, if any.

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pub fn get_mut<Q>(&mut self, key: &Q) -> Option<&mut V>
where Q: Eq + Ord + Hash + ?Sized, K: Borrow<Q>,

Returns a mutable reference to the value stored for key, if any.

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pub fn remove<Q>(&mut self, key: &Q) -> Option<V>
where Q: Eq + Ord + Hash + ?Sized, K: Borrow<Q>,

Removes a key from the map, returning the previous value, if any.

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pub fn remove_entry<Q>(&mut self, key: &Q) -> Option<(K, V)>
where Q: Eq + Ord + Hash + ?Sized, K: Borrow<Q>,

Removes a key from the map, returning the previous key/value pair, if any.

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pub fn keys(&self) -> impl Iterator<Item = &K>

Gets an iterator over the keys of the map.

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pub fn values(&self) -> impl Iterator<Item = &V>

Gets an iterator over the values of the map.

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pub fn values_mut(&mut self) -> impl Iterator<Item = &mut V>

Gets a mutable iterator over the values of the map.

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pub fn iter(&self) -> impl Iterator<Item = (&K, &V)>

Gets an iterator over the entries of the map.

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pub fn iter_mut(&mut self) -> impl Iterator<Item = (&K, &mut V)>

Gets a mutable iterator over the entries of the map.

Trait Implementations§

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impl<K: Clone + Hash + Ord, V: Clone> Clone for Map<K, V>

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fn clone(&self) -> Map<K, V>

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<K: Debug + Hash + Ord, V: Debug> Debug for Map<K, V>

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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<'de, K: Debug + Hash + Ord + Deserialize<'de>, V: Deserialize<'de>> Deserialize<'de> for Map<K, V>

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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer. Read more
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impl<'a, K: Hash + Ord + 'a, V: 'a> IntoIterator for &'a Map<K, V>

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type Item = (&'a K, &'a V)

The type of the elements being iterated over.
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type IntoIter = <&'a IndexMap<K, V> as IntoIterator>::IntoIter

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
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impl<'a, K: Hash + Ord + 'a, V: 'a> IntoIterator for &'a mut Map<K, V>

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type Item = (&'a K, &'a mut V)

The type of the elements being iterated over.
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type IntoIter = <&'a mut IndexMap<K, V> as IntoIterator>::IntoIter

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
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impl<K: Hash + Ord, V> IntoIterator for Map<K, V>

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type Item = (K, V)

The type of the elements being iterated over.
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type IntoIter = <IndexMap<K, V> as IntoIterator>::IntoIter

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more

Auto Trait Implementations§

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impl<K, V> Freeze for Map<K, V>

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impl<K, V> RefUnwindSafe for Map<K, V>

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impl<K, V> Send for Map<K, V>
where K: Send, V: Send,

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impl<K, V> Sync for Map<K, V>
where K: Sync, V: Sync,

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impl<K, V> Unpin for Map<K, V>
where K: Unpin, V: Unpin,

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impl<K, V> UnwindSafe for Map<K, V>
where K: UnwindSafe, V: 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,