C# intersection of two lists
WebDec 5, 2014 · 101 How about an Enumerable.Intersect and StringComparer combo: // other options include StringComparer.CurrentCultureIgnoreCase // or StringComparer.InvariantCultureIgnoreCase var results = array1.Intersect (array2, StringComparer.OrdinalIgnoreCase); Share Improve this answer Follow answered Apr … WebApr 8, 2024 · Advanced Set Operations in Java. The HashSet class includes several methods for performing various set operations, such as:. Union of Sets, via the addAll() method.; Intersection of sets, via the retainAll() method.; Difference between two sets, via the removeAll() method.; Check if a set is a subset of another set, via the containsAll() …
C# intersection of two lists
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WebJun 19, 2015 · EDIT 2: The Intersect Any is the way to go because you are want to compare a list to a list public List GetUsers (User admin) { var adminCompanyIDs = … WebMar 7, 2024 · List intersection = list1.Intersect (list2).ToList (); The intersection returns empty. When I try this exact setup with two List (not array) it works as …
WebJan 3, 2024 · class Program { static void Main ( string [] args) { List list1 = new List (); List list2 = new List (); list1.Add ( new Class1 { Name = "name1" }); list1.Add ( new Class1 { Name = "name2" }); list2.Add ( new Class2 { Name = "name2" }); list2.Add ( new Class2 { Name = "name3" }); var distItems = list1.Select (s1 => new Class1 { Name = s1.Name … WebJul 8, 2012 · 2 Answers Sorted by: 6 Intersect returns an IEnumerable, so the correct way is: var loads = l1.Intersect (l2).ToList (); ToList creates a List from an …
WebMay 17, 2012 · 7 Answers Sorted by: 41 If you want a list of a single property you'd like to intersect then all the other pretty LINQ solutions work just fine. BUT! If you'd like to intersect on a whole class though and as a result have a List instead of List you'll have to write your own equality comparer.
Webvar commonUsers = list1.Select (a => a.User).Intersect (list2.Select (b => b.User)); However, by itself this assumes that User implements IEquatable, which does not …
WebApr 11, 2011 · Intersect can be used to find matches between two collections, like so: // Assign two arrays. int [] array1 = { 1, 2, 3 }; int [] array2 = { 2, 3, 4 }; // Call Intersect extension method. var intersect = array1.Intersect (array2); // Write intersection to screen. foreach (int value in intersect) { Console.WriteLine (value); // Output: 2, 3 } credit card cash back ratesWebMay 17, 2024 · Intersection of two lists by a member. public class myObject { public string Name {get; set;} public string ID {get; set;} } List list1 = new List … buckhead activitiesWebMar 29, 2011 · Intersections have to be performed on two sequences of the same type. It sounds like you don't so much want an intersection between two sets, as a filter of the … buckhead advisory groupWebIntersect Two Lists in C#. List data1 = new List {1,2,3,4,5}; List data2 = new List {"6","3"}; The lambda expression should return true if data1 … buckhead academy millen gaWebDec 23, 2011 · I have two sets of data (Lists of complex objects or SQL data - LINQ to Entities) where im trying to find the intersection of the two sets of data. Specifically an intersection of the Complex property, … credit card cash back on appliancesWebJan 14, 2016 · List allproductsTrans = new List (); transactions.ForEach (p => allproductsTrans.Concat (p.Products)); var result = … buckhead acupuncture and herbal centerWebSep 10, 2010 · .NET has a number of set operations that work on enumerables, so you could take the set intersection to find members in both lists. Use Any () to find out if the resulting sequence has any entries. E.g. if (list1.Intersect (list2).Any ()) Share Improve this answer Follow edited Sep 10, 2010 at 7:36 answered Sep 10, 2010 at 6:56 Brian … buckhead accommodations