C# intersect two lists of different types
WebRelated: A list of multiple data types? I want to know how to store different array types (including system types) inside an array. The above question covered how to create a list that will allow only user-defined classes by using interfaces. But what if I want a list that will accept only doubles and strings? What about doubles and a class I ... WebSep 17, 2012 · Just make sure you define them in the interface and use consistent naming. By doing this, you can fill a list with two different types while maintaining your class structures. If you need to pick them out of the list later, you can just cast out like this: foreach (var item in list) { var tempContainer = Activator.CreateInstance (item.GetType ...
C# intersect two lists of different types
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WebDec 27, 2024 · 2 I have two Lists of objects with the same elements and values: parameters = new List () { new Parameter () { parameterName="value", parameterType="string"} } the Parameter class looks like this: public class Parameter { public string parameterName; public string parameterType; } WebApr 15, 2014 · 2 Answers Sorted by: 12 The type List inherits from the non-generic interface IList. Since all of the values in the myList type are bound intsance of List you can use them as the non-generic IList. So you can use that to greatly simplify your logic
WebMay 27, 2015 · The best built-in one is Tuple; you could define a List> where the last int parameter identifies the populated field of the Tuple (1=int, 2=string, etc), and all others will have their default value. You can use Item5 to dynamically retrieve Item1 through Item4, or just put it in a switch … WebGiven two lists of different types, is it possible to make those types convertible between or comparable to each other (eg with a TypeConverter or similar) so that a LINQ query can compare them? I've seen other similar questions on SO but nothing that points to making the types convertible between each other to solve the problem. Collection Types:
WebMay 26, 2015 · you can use Intersect and count method List A = new List; List B = new List; // Some logic....item added in both lists. Then int count = A.Intersect (B).Count (); Share Improve this answer Follow edited Nov 23, 2024 at 12:36 ProgrammingLlama 35.4k 6 68 85 answered Jun 26, 2015 at 9:47 Mzhda Saeed
WebThere are two overloaded methods for Intersect method, the first method takes only the second sequence of elements whereas the second method takes the extra additional parameter the interface called IEqualityComparer which is used to comparing the custom types when a complex problem occurs. How Intersect works in LINQ?
WebFeb 28, 2015 · Or you can create a new List from the second list: var secondListA = testListB.Select (x=> new TestA () {Category=x.Category, ProductID=x.ProductID}).ToList (); And then create your Comparer: fitgirlpack torrentWebMar 25, 2009 · How to use LINQ methods to compare objects of custom types. LINQ provides a convenient syntax and many useful methods for operating with collections of … fit girl picsWebMar 10, 2024 · List1, the object fields are optional So I want to compare/intersect list1 of filter items against list2 of email items to a combined list without duplicates that includes only the items that have all filter criteria of list1 and includes the mailid of list2. fit girl real wrestling matchWebJun 10, 2024 · void Main () { var list1 = new List (); var list2 = new List (); var left = list1.Select (l1 => new CustomerMetrics { CustomerId = l1.CustomerId, MRMetrics = l1.MRMetrics, LRMetrics = list2.FirstOrDefault (l2 => l2.CustomerId == l1.CustomerId)?.LRMetrics }); var right = list2.Select (l2 => new CustomerMetrics { … fit girl photoshootWebThe LINQ Contains Method in C# is used to check whether a sequence or collection (i.e. data source) contains a specified element or not. If the data source contains the specified element, then it returns true else returns false. There are there Contains Methods available in C# and they are implemented in two different namespaces. fit girl official website redditWebJun 30, 2024 · Use IntersectBy method. If we simply want to compare elements by key, then we can use IntersectBy instead of creating comparer. Following code generates same … can high heels be shortenedWebNov 27, 2024 · 17 Granted the documentation doesn't have any examples, it states that the selector function should select TKey i.e. the type of the second collection. The following should work: var intersect = elements.IntersectBy (elements2, x => x); var except = elements.ExceptBy (elements2, x => x); Although I think this may be closer to what you … can high hdl offset high ldl