/C#/C# distinct comparer multiple properties

C# distinct comparer multiple properties

List<Person> distinctPeople = allPeople
  .GroupBy(p => new {p.PersonId, p.FavoriteColor} )
  .Select(g => g.First())
  .ToList();

Source: stackoverflow.com

C# distinct comparer multiple properties

public static IEnumerable<TSource> DistinctBy<TSource, TKey>
    (this IEnumerable<TSource> source, Func<TSource, TKey> keySelector)
{
    HashSet<TKey> seenKeys = new HashSet<TKey>();
    foreach (TSource element in source)
    {
        if (seenKeys.Add(keySelector(element)))
        {
            yield return element;
        }
    }
}

Source: stackoverflow.com

Similar codes

1 vote140 views1 answer
Toggle unity c#
C#
0 vote142 views3 answers
How to find all role in mysql
C#
17 votes120 views4 answers
Height of binary tree
C#
0 vote150 views1 answer
C# how to start an application and detect if started
C#
1 vote144 views1 answer
C# list get element from end
C#
0 vote145 views1 answer
Asp.netcore: develop on win10 run on ubuntu
C#
0 vote154 views1 answer
Unity enable hdr picker
C#
2 votes162 views1 answer
Change array size in unity
C#
2 votes178 views1 answer
Fade text unity
C#Unity
5 votes154 views1 answer
Asp.net core .gitignore
C#