pub struct NonIterMap<K, V, S = RandomState>(HashMap<K, V, S>)
where
    K: Eq + Hash,
    S: BuildHasher;
Expand description

A thin wrapper around a HashMap, which guarantees that a HashMap usage will not result in a non-deterministic execution (simply by disallowing the iteration over its elements).

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§0: HashMap<K, V, S>

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impl<K, V> NonIterMap<K, V>
where K: Hash + Eq,

pub fn new() -> NonIterMap<K, V>

Creates an empty map.

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

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

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

Inserts a key-value pair into the map. If the map did not have this key present, None is returned. If the map did have this key present, the value is updated, and the old value is returned.

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

Returns a reference to the value corresponding to the key.

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

Returns a mutable reference to the value corresponding to the key.

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

Returns true if the map contains a value for the specified key.

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

Removes a key from the map, returning the value at the key if the key was previously in the map.

pub fn clear(&mut self)

Clears the map, removing all key-value pairs.

pub fn len(&self) -> usize

Returns the number of elements in the map.

pub fn is_empty(&self) -> bool

Returns whether the map is empty

Trait Implementations§

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impl<K, V, S> Clone for NonIterMap<K, V, S>
where K: Clone + Eq + Hash, V: Clone, S: Clone + BuildHasher,

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

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, V, S> Debug for NonIterMap<K, V, S>
where K: Debug + Eq + Hash, V: Debug, S: Debug + BuildHasher,

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

Formats the value using the given formatter. Read more
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impl<K, V> Default for NonIterMap<K, V>
where K: Hash + Eq,

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fn default() -> NonIterMap<K, V>

Returns the “default value” for a type. Read more
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impl<K, V> FromIterator<(K, V)> for NonIterMap<K, V>
where K: Hash + Eq,

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fn from_iter<T>(iter: T) -> NonIterMap<K, V>
where T: IntoIterator<Item = (K, V)>,

Creates a value from an iterator. Read more
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impl<K, V, S> PartialEq for NonIterMap<K, V, S>

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fn eq(&self, other: &NonIterMap<K, V, S>) -> 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<K, V, S> Eq for NonIterMap<K, V, S>
where K: Eq + Hash, V: Eq, S: Eq + BuildHasher,

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impl<K, V, S> StructuralPartialEq for NonIterMap<K, V, S>
where K: Eq + Hash, S: BuildHasher,

Auto Trait Implementations§

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impl<K, V, S> RefUnwindSafe for NonIterMap<K, V, S>

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impl<K, V, S> Send for NonIterMap<K, V, S>
where K: Send, S: Send, V: Send,

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impl<K, V, S> Sync for NonIterMap<K, V, S>
where K: Sync, S: Sync, V: Sync,

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impl<K, V, S> Unpin for NonIterMap<K, V, S>
where K: Unpin, S: Unpin, V: Unpin,

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impl<K, V, S> UnwindSafe for NonIterMap<K, V, S>
where K: UnwindSafe, S: 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<U> As for U

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fn as_<T>(self) -> T
where T: CastFrom<U>,

Casts self to type T. The semantics of numeric casting with the as operator are followed, so <T as As>::as_::<U> can be used in the same way as T as U for numeric conversions. 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> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V