Create HashSet(Of T) class that uses the default equality comparer for the set type : HashSet « Data Structure « VB.Net






  1. VB.Net
  2. Data Structure
  3. HashSet

Create HashSet(Of T) class that uses the default equality comparer for the set type

 

Imports System
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
            evenNumbers.Add(i * 2)
            oddNumbers.Add((i * 2) + 1)
        Next i
        DisplaySet(evenNumbers)
        DisplaySet(oddNumbers)
        Dim numbers As HashSet(Of Integer) = New HashSet(Of Integer)(evenNumbers)
        numbers.UnionWith(oddNumbers)
        DisplaySet(numbers)
    End Sub

    Private Shared Sub DisplaySet(ByVal coll As HashSet(Of Integer))
        For Each i As Integer In coll
            Console.WriteLine(" {0}", i)
        Next i
    End Sub
End Class








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2.Lookup(TKey, TElement) Represents a collection of keys each mapped to one or more values.
3.ReadOnlyCollection(T) Class Provides the base class for a generic read-only collection.
4.HashSet(T) Class Represents a set of values.
5.Create a HashSet from another HashSet
6.Create HashSet(Of T) class from another collection
7.Remove element from HashSet with condition function
8.HashSet(T).Clear Method removes all elements from a HashSet(Of T) object.
9.HashSet(T).Contains Method tells whether a HashSet(Of T) object contains the specified element.
10.HashSet(T).ExceptWith Method removes all elements in the specified collection from the current HashSet(Of T) object.
11.HashSet(T).IsProperSubsetOf Method tells whether a HashSet(Of T) object is a proper subset of the specified collection.
12.HashSet(T).SymmetricExceptWith Method keeps elements that are present either in that object or in the specified collection, but not both.