HashSet<t> 类 (System.Collections.Generic)

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generic <typename T>
public ref class HashSet : System::Collections::Generic::ICollection<T>, System::Collections::Generic::IEnumerable<T>, System::Collections::Generic::IReadOnlyCollection<T>, System::Collections::Generic::ISet<T>

generic <typename T>
public ref class HashSet : System::Collections::Generic::ICollection<T>, System::Collections::Generic::IEnumerable<T>, System::Collections::Generic::IReadOnlyCollection<T>, System::Collections::Generic::IReadOnlySet<T>, System::Collections::Generic::ISet<T>, System::Runtime::Serialization::IDeserializationCallback, System::Runtime::Serialization::ISerializable

generic <typename T>
public ref class HashSet : System::Collections::Generic::ICollection<T>, System::Collections::Generic::IEnumerable<T>, System::Collections::Generic::IReadOnlyCollection<T>, System::Collections::Generic::ISet<T>, System::Runtime::Serialization::IDeserializationCallback, System::Runtime::Serialization::ISerializable

generic <typename T>
public ref class HashSet : System::Collections::Generic::ICollection<T>, System::Collections::Generic::IEnumerable<T>, System::Runtime::Serialization::IDeserializationCallback, System::Runtime::Serialization::ISerializable

generic <typename T>
public ref class HashSet : System::Collections::Generic::ICollection<T>, System::Collections::Generic::IEnumerable<T>, System::Collections::Generic::ISet<T>, System::Runtime::Serialization::IDeserializationCallback, System::Runtime::Serialization::ISerializable

generic <typename T>
public ref class HashSet : System::Collections::Generic::ICollection<T>, System::Collections::Generic::IEnumerable<T>, System::Collections::Generic::ISet<T>

public class HashSet<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>, System.Collections.Generic.IReadOnlyCollection<T>, System.Collections.Generic.ISet<T>

public class HashSet<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>, System.Collections.Generic.IReadOnlyCollection<T>, System.Collections.Generic.IReadOnlySet<T>, System.Collections.Generic.ISet<T>, System.Runtime.Serialization.IDeserializationCallback, System.Runtime.Serialization.ISerializable

public class HashSet<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>, System.Collections.Generic.IReadOnlyCollection<T>, System.Collections.Generic.ISet<T>, System.Runtime.Serialization.IDeserializationCallback, System.Runtime.Serialization.ISerializable

[System.Serializable]
public class HashSet<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>, System.Runtime.Serialization.IDeserializationCallback, System.Runtime.Serialization.ISerializable

[System.Serializable]
public class HashSet<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>, System.Collections.Generic.ISet<T>, System.Runtime.Serialization.IDeserializationCallback, System.Runtime.Serialization.ISerializable

[System.Serializable]
public class HashSet<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>, System.Collections.Generic.IReadOnlyCollection<T>, System.Collections.Generic.ISet<T>, System.Runtime.Serialization.IDeserializationCallback, System.Runtime.Serialization.ISerializable

public class HashSet<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>, System.Collections.Generic.ISet<T>

type HashSet<'T> = class
    interface ICollection<'T>
    interface seq<'T>
    interface IEnumerable
    interface IReadOnlyCollection<'T>
    interface ISet<'T>

type HashSet<'T> = class
    interface ICollection<'T>
    interface seq<'T>
    interface IEnumerable
    interface IReadOnlyCollection<'T>
    interface ISet<'T>
    interface IReadOnlySet<'T>
    interface IDeserializationCallback
    interface ISerializable

type HashSet<'T> = class
    interface ICollection<'T>
    interface seq<'T>
    interface IEnumerable
    interface IReadOnlyCollection<'T>
    interface ISet<'T>
    interface IDeserializationCallback
    interface ISerializable

[<System.Serializable>]
type HashSet<'T> = class
    interface ICollection<'T>
    interface seq<'T>
    interface IEnumerable
    interface ISerializable
    interface IDeserializationCallback

[<System.Serializable>]
type HashSet<'T> = class
    interface ISerializable
    interface IDeserializationCallback
    interface ISet<'T>
    interface ICollection<'T>
    interface seq<'T>
    interface IEnumerable

[<System.Serializable>]
type HashSet<'T> = class
    interface ICollection<'T>
    interface seq<'T>
    interface IEnumerable
    interface ISerializable
    interface IDeserializationCallback
    interface ISet<'T>
    interface IReadOnlyCollection<'T>

type HashSet<'T> = class
    interface ISet<'T>
    interface ICollection<'T>
    interface seq<'T>
    interface IEnumerable

[<System.Serializable>]
type HashSet<'T> = class
    interface ICollection<'T>
    interface ISerializable
    interface IDeserializationCallback
    interface ISet<'T>
    interface IReadOnlyCollection<'T>
    interface seq<'T>
    interface IEnumerable

Public Class HashSet(Of T)
Implements ICollection(Of T), IEnumerable(Of T), IReadOnlyCollection(Of T), ISet(Of T)

Public Class HashSet(Of T)
Implements ICollection(Of T), IDeserializationCallback, IEnumerable(Of T), IReadOnlyCollection(Of T), IReadOnlySet(Of T), ISerializable, ISet(Of T)

Public Class HashSet(Of T)
Implements ICollection(Of T), IDeserializationCallback, IEnumerable(Of T), IReadOnlyCollection(Of T), ISerializable, ISet(Of T)

Public Class HashSet(Of T)
Implements ICollection(Of T), IDeserializationCallback, IEnumerable(Of T), ISerializable

Public Class HashSet(Of T)
Implements ICollection(Of T), IDeserializationCallback, IEnumerable(Of T), ISerializable, ISet(Of T)

Public Class HashSet(Of T)
Implements ICollection(Of T), IEnumerable(Of T), ISet(Of T)

以下示例演示如何合并两个不同的集。此示例创建两个 HashSet<T> 对象，并分别使用偶数和奇数填充它们。第三 HashSet<T> 个对象是从包含偶数的集中创建的。然后，该示例调用 UnionWith 方法，该方法将奇数集添加到第三组。


   HashSet<int> evenNumbers = new HashSet<int>();
HashSet<int> oddNumbers = new HashSet<int>();
for (int i = 0; i < 5; i++)
    // Populate numbers with just even numbers.
    evenNumbers.Add(i * 2);
    // Populate oddNumbers with just odd numbers.
    oddNumbers.Add((i * 2) + 1);
Console.Write("evenNumbers contains {0} elements: ", evenNumbers.Count);
DisplaySet(evenNumbers);
Console.Write("oddNumbers contains {0} elements: ", oddNumbers.Count);
DisplaySet(oddNumbers);
// Create a new HashSet populated with even numbers.
HashSet<int> numbers = new HashSet<int>(evenNumbers);
Console.WriteLine("numbers UnionWith oddNumbers...");
numbers.UnionWith(oddNumbers);
Console.Write("numbers contains {0} elements: ", numbers.Count);
DisplaySet(numbers);
void DisplaySet(HashSet<int> collection)
    Console.Write("{");
    foreach (int i in collection)
        Console.Write(" {0}", i);
    Console.WriteLine(" }");
/* This example produces output similar to the following:
* evenNumbers contains 5 elements: { 0 2 4 6 8 }
* oddNumbers contains 5 elements: { 1 3 5 7 9 }
* numbers UnionWith oddNumbers...
* numbers contains 10 elements: { 0 2 4 6 8 1 3 5 7 9 }
   
    Imports System.Collections.Generic
Class Program
    Shared Sub Main()
        Dim evenNumbers As HashSet(Of Integer) = New HashSet(Of Integer)()
        Dim oddNumbers As HashSet(Of Integer) = New HashSet(Of Integer)()
        For i As Integer = 0 To 4
            ' Populate evenNumbers with only even numbers.
            evenNumbers.Add(i * 2)
            ' Populate oddNumbers with only odd numbers.
            oddNumbers.Add((i * 2) + 1)
        Next i
        Console.Write("evenNumbers contains {0} elements: ", evenNumbers.Count)
        DisplaySet(evenNumbers)
        Console.Write("oddNumbers contains {0} elements: ", oddNumbers.Count)
        DisplaySet(oddNumbers)
        ' Create a new HashSet populated with even numbers.
        Dim numbers As HashSet(Of Integer) = New HashSet(Of Integer)(evenNumbers)
        Console.WriteLine("numbers UnionWith oddNumbers...")
        numbers.UnionWith(oddNumbers)
        Console.Write("numbers contains {0} elements: ", numbers.Count)
        DisplaySet(numbers)
    End Sub
    Private Shared Sub DisplaySet(ByVal collection As HashSet(Of Integer))
        Console.Write("{")
        For Each i As Integer In collection
            Console.Write(" {0}", i)
        Next i
        Console.WriteLine(" }")
    End Sub
End Class
' This example produces output similar to the following:
' evenNumbers contains 5 elements: { 0 2 4 6 8 }
' oddNumbers contains 5 elements: { 1 3 5 7 9 }
' numbers UnionWith oddNumbers...
' numbers contains 10 elements: { 0 2 4 6 8 1 3 5 7 9 }
    
     有关此 API 的详细信息，请参阅
     
      HashSet<T> 的补充 API 说明
     
     。
    
    
     ToImmutableDictionary<TSource,TKey,TValue>(IEnumerable<TSource>,
 Func<TSource,TKey>, Func<TSource,TValue>, IEqualityComparer<TKey>,
 IEqualityComparer<TValue>)
    
    
     枚举并转换序列，然后使用指定的键和值比较器生成其内容的不可变字典。
    
    
     GroupBy<TSource,TKey,TElement,TResult>(IEnumerable<TSource>, Func<TSource,
TKey>, Func<TSource,TElement>, Func<TKey,IEnumerable<TElement>,
TResult>, IEqualityComparer<TKey>)
    
    
     根据指定的键选择器函数对序列中的元素进行分组，并且从每个组及其键中创建结果值。 通过使用指定的比较器对键值进行比较，并且通过使用指定的函数对每个组的元素进行投影。
    
    
     GroupJoin<TOuter,TInner,TKey,TResult>(IEnumerable<TOuter>, IEnumerable<TInner>,
 Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>,
TResult>)
    
    
     基于键值等同性对两个序列的元素进行关联，并对结果进行分组。 使用默认的相等比较器对键进行比较。
    
    
     GroupJoin<TOuter,TInner,TKey,TResult>(IEnumerable<TOuter>, IEnumerable<TInner>,
 Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>,
TResult>, IEqualityComparer<TKey>)
    
    
     基于键值等同性对两个序列的元素进行关联，并对结果进行分组。 使用指定的
     
      IEqualityComparer<T>
     
     对键进行比较。
    
    
     Join<TOuter,TInner,TKey,TResult>(IEnumerable<TOuter>, IEnumerable<TInner>,
 Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,TInner,TResult>,
 IEqualityComparer<TKey>)
    
    
     基于匹配键对两个序列的元素进行关联。 使用指定的
     
      IEqualityComparer<T>
     
     对键进行比较。