Struct UnsafeMultiHashMap<TKey, TValue>

Namespace: Unity.Collections.LowLevel.Unsafe
Syntax
public struct UnsafeMultiHashMap<TKey, TValue> : IDisposable where TKey : struct, IEquatable<TKey> where TValue : struct
Type Parameters
Name Description
TKey
TValue

Constructors

UnsafeMultiHashMap(Int32, Allocator)

Declaration
public UnsafeMultiHashMap(int capacity, Allocator allocator)
Parameters
Type Name Description
Int32 capacity
Allocator allocator

Properties

Capacity

The number of items that can fit in the container.

Declaration
public int Capacity { get; set; }
Property Value
Type Description
Int32

The number of items that the container can hold before it resizes its internal storage.
Remarks

Capacity specifies the number of items the container can currently hold. You can change Capacity to fit more or fewer items. Changing Capacity creates a new array of the specified size, copies the old array to the new one, and then deallocates the original array memory.

IsCreated

Reports whether memory for the container is allocated.

Declaration
public bool IsCreated { get; }
Property Value
Type Description
Boolean

True if this container object's internal storage has been allocated.
Remarks

Note that the container storage is not created if you use the default constructor.

Length

Declaration
public int Length { get; }
Property Value
Type Description
Int32

Methods

Add(TKey, TValue)

Add an element with the specified key and value into the container.

Declaration
public void Add(TKey key, TValue item)
Parameters
Type Name Description
TKey key

The key of the element to add.
TValue item

AsParallelWriter()

Returns parallel writer instance.

Declaration
public UnsafeMultiHashMap<TKey, TValue>.ParallelWriter AsParallelWriter()
Returns
Type Description
UnsafeMultiHashMap.ParallelWriter<>

Clear()

Clears the container.

Declaration
public void Clear()
Remarks

Containers capacity remains unchanged.

ContainsKey(TKey)

Declaration
public bool ContainsKey(TKey key)
Parameters
Type Name Description
TKey key
Returns
Type Description
Boolean

CountValuesForKey(TKey)

Declaration
public int CountValuesForKey(TKey key)
Parameters
Type Name Description
TKey key
Returns
Type Description
Int32

Dispose()

Disposes of this multi-hashmap and deallocates its memory immediately.

Declaration
public void Dispose()

Dispose(JobHandle)

Safely disposes of this container and deallocates its memory when the jobs that use it have completed.

Declaration
public JobHandle Dispose(JobHandle inputDeps)
Parameters
Type Name Description
JobHandle inputDeps
Returns
Type Description
JobHandle

A new job handle containing the prior handles as well as the handle for the job that deletes the container.
Remarks

You can call this function dispose of the container immediately after scheduling the job. Pass the JobHandle returned by the Job.Schedule method using the jobHandle parameter so the job scheduler can dispose the container after all jobs using it have run.

GetKeyArray(Allocator)

Declaration
public NativeArray<TKey> GetKeyArray(Allocator allocator)
Parameters
Type Name Description
Allocator allocator
Returns
Type Description
NativeArray<TKey>

GetKeyValueArrays(Allocator)

Declaration
public NativeKeyValueArrays<TKey, TValue> GetKeyValueArrays(Allocator allocator)
Parameters
Type Name Description
Allocator allocator
Returns
Type Description
NativeKeyValueArrays<TKey, TValue>

GetValueArray(Allocator)

Declaration
public NativeArray<TValue> GetValueArray(Allocator allocator)
Parameters
Type Name Description
Allocator allocator
Returns
Type Description
NativeArray<TValue>

GetValuesForKey(TKey)

Declaration
public UnsafeMultiHashMap<TKey, TValue>.Enumerator GetValuesForKey(TKey key)
Parameters
Type Name Description
TKey key
Returns
Type Description
UnsafeMultiHashMap.Enumerator<>

Remove(TKey)

Removes all elements with the specified key from the container.

Declaration
public int Remove(TKey key)
Parameters
Type Name Description
TKey key

The key of the element to remove.
Returns
Type Description
Int32

Returns number of removed items.

Remove(NativeMultiHashMapIterator<TKey>)

Declaration
public void Remove(NativeMultiHashMapIterator<TKey> it)
Parameters
Type Name Description
NativeMultiHashMapIterator<TKey> it

Remove<TValueEQ>(TKey, TValueEQ)

Declaration
public void Remove<TValueEQ>(TKey key, TValueEQ value)
    where TValueEQ : struct, IEquatable<TValueEQ>
Parameters
Type Name Description
TKey key
TValueEQ value
Type Parameters
Name Description
TValueEQ

SetValue(TValue, NativeMultiHashMapIterator<TKey>)

Declaration
public bool SetValue(TValue item, NativeMultiHashMapIterator<TKey> it)
Parameters
Type Name Description
TValue item
NativeMultiHashMapIterator<TKey> it
Returns
Type Description
Boolean

TryGetFirstValue(TKey, out TValue, out NativeMultiHashMapIterator<TKey>)

Declaration
public bool TryGetFirstValue(TKey key, out TValue item, out NativeMultiHashMapIterator<TKey> it)
Parameters
Type Name Description
TKey key
TValue item
NativeMultiHashMapIterator<TKey> it
Returns
Type Description
Boolean

TryGetNextValue(out TValue, ref NativeMultiHashMapIterator<TKey>)

Declaration
public bool TryGetNextValue(out TValue item, ref NativeMultiHashMapIterator<TKey> it)
Parameters
Type Name Description
TValue item
NativeMultiHashMapIterator<TKey> it
Returns
Type Description
Boolean

Extension Methods