pub struct Map<K: 'static + Key, V: 'static + Value>(_);
Expand description

Multithreaded hash map that is always saved atomically

Calling clone() will create a reference to the same instance, and can be easily shared between threads.

For tracking incremental changes to your data structure, look at VersionedMap

Implementations

Insert a new value for the given key in the map.

Update a value with the given key, and return the new value if the key exists.

Call the given function to insert a value if it doesn’t exist. Return with the current value to the key.

Returns the stored value for a key, or None.

Sets the key as removed in the map.

Returns if there’s an addition for the specified key.

Call the function for all additive keys.

Returns the number of keys.

Return the size of all allocated items.

True if the map doesn’t contain any items.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Returns the “default value” for a type. Read more

Generate an Intent wrapper for each field in the Index. Read more

Generate an Intent wrapper for each field in the Index. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

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

Should always be Self

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

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

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more