Create a the HashSet with specified equality comparer in CSharp
Description
The following code shows how to create a the HashSet with specified equality comparer.
Example
/* ww w . j ava 2 s . c om*/
using System;
using System.Collections.Generic;
class Program
{
public static void Main()
{
MyComparer myComparer = new MyComparer();
HashSet<string> allVehicles = new HashSet<string>(myComparer);
allVehicles.Add("A");
allVehicles.Add("T");
allVehicles.Add("B");
allVehicles.Add("B");
foreach(string s in allVehicles){
Console.WriteLine(s);
}
}
}
class MyComparer : EqualityComparer<string>
{
public override bool Equals(string s1, string s2)
{
return s1.Equals(s2, StringComparison.CurrentCultureIgnoreCase);
}
public override int GetHashCode(string s)
{
return base.GetHashCode();
}
}
The code above generates the following result.