Struct NativeHashSet<T>
Set of values.
Namespace: Unity.Collections
Syntax
public struct NativeHashSet<T> : INativeDisposable, IDisposable, IEnumerable<T> where T : struct, IEquatable<T>Type Parameters
| Name | Description |
|---|---|
| T | The type of the values in the container. |
Constructors
NativeHashSet(Int32, Allocator)
Constructs a new container with the specified initial capacity and type of memory allocation.
Declaration
public NativeHashSet(int capacity, Allocator allocator)Parameters
| Type | Name | Description |
|---|---|---|
| Int32 | capacity | The initial capacity of the container. If the list grows larger than its capacity, the internal array is copied to a new, larger array. |
| Allocator | allocator | A member of the Unity.Collections.Allocator enumeration. |
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. You must specify at least an allocation type to construct a usable container.
Warning: the IsCreated property can't be used to determine whether a copy of a container is still valid.
If you dispose any copy of the container, the container storage is deallocated. However, the properties of
the other copies of the container (including the original) are not updated. As a result the IsCreated property
of the copies still return true even though the container storage has been deallocated.
Accessing the data of a native container that has been disposed throws a
IsEmpty
Reports whether container is empty.
Declaration
public bool IsEmpty { get; }Property Value
| Type | Description |
|---|---|
| Boolean | True if this container empty. |
Methods
Add(T)
Add the specified element into the container. If the specified element already exists in the container it returns false.
Declaration
public bool Add(T item)Parameters
| Type | Name | Description |
|---|---|---|
| T | item | The element to add to the container. |
Returns
| Type | Description |
|---|---|
| Boolean | Returns true if the specified element is added into the container, otherwise returns false. |
AsParallelWriter()
Returns parallel writer instance.
Declaration
public NativeHashSet<T>.ParallelWriter AsParallelWriter()Returns
| Type | Description |
|---|---|
| NativeHashSet.ParallelWriter<> | Parallel writer instance. |
Clear()
Clears the container.
Declaration
public void Clear()Remarks
Containers capacity remains unchanged.
Contains(T)
Determines whether an element is in the container.
Declaration
public bool Contains(T item)Parameters
| Type | Name | Description |
|---|---|---|
| T | item | The element to locate in the container. |
Returns
| Type | Description |
|---|---|
| Boolean | Returns true if the specified element is inside the container, otherwise returns false indicating the specified element wasn't in the container. |
Count()
The current number of items in the container.
Declaration
public int Count()Returns
| Type | Description |
|---|---|
| Int32 | The item count. |
Dispose()
Disposes of this container 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 | The job handle or handles for any scheduled jobs that use this container. |
Returns
| Type | Description |
|---|---|
| JobHandle | A new job handle containing the prior handles as well as the handle for the job that deletes the container. |
Implements
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.
GetEnumerator()
Returns an IEnumerator interface for the container.
Declaration
public NativeHashSet<T>.Enumerator GetEnumerator()Returns
| Type | Description |
|---|---|
| NativeHashSet.Enumerator<> | An IEnumerator interface for the container. |
Remove(T)
Removes the specified element from the container.
Declaration
public bool Remove(T item)Parameters
| Type | Name | Description |
|---|---|---|
| T | item | The element to remove from the container. |
Returns
| Type | Description |
|---|---|
| Boolean | Returns true if the specified element was removed from the container, otherwise returns false indicating the specified element wasn't in the container. |
ToNativeArray(Allocator)
Returns array populated with elements from the container.
Declaration
public NativeArray<T> ToNativeArray(Allocator allocator)Parameters
| Type | Name | Description |
|---|---|---|
| Allocator | allocator | A member of the Unity.Collections.Allocator enumeration. |
Returns
| Type | Description |
|---|---|
| NativeArray<T> | Array of elements of the container. |