/C#/C# list.except compare classes with IEqualityComparer

C# list.except compare classes with IEqualityComparer

// Except gives you the items in the first set but not the second
        var equalityComparer = new MyClassEqualityComparer();
        var InList1ButNotList2 = List1.Except(List2, equalityComparer);
        var InList2ButNotList1 = List2.Except(List1, equalityComparer);
// Intersect gives you the items that are common to both lists    
        var InBothLists = List1.Intersect(List2);

public class MyClass
{
    public int i;
    public int j;
}

class MyClassEqualityComparer : IEqualityComparer<MyClass>
{
    public bool Equals(MyClass x, MyClass y)
    {
        return x.i == y.i &&
               x.j == y.j;
    }

    public int GetHashCode(MyClass obj)
    {
        unchecked
        {
            if (obj == null)
                return 0;
            int hashCode = obj.i.GetHashCode();
            hashCode = (hashCode * 397) ^ obj.i.GetHashCode();
            return hashCode;
        }
    }
}

Source: stackoverflow.com

Similar codes

0 vote345 views1 answer
C# method info extension
C#
0 vote307 views1 answer
Browser folder in wpf
C#
2 votes306 views2 answers
Rotation unity script 2d
C#
4 votes300 views1 answer
Find index of combobox index c#
C#
1 vote343 views1 answer
C# find element in list of list
C#
0 vote333 views1 answer
Remove access to admin from deleting the file in C#
C#
0 vote331 views1 answer
C# iorderedenumerable to dictionary
C#
1 vote323 views1 answer
C# System.Resources.MissingManifestResourceException error
C#
12 votes309 views6 answers
Ternary operator c#
C#
10 votes302 views3 answers
How to make a quit button in unity
C#