2024 C# flatten a list of lists

C# flatten a list of lists

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August undefined, 2024

WebSep 24, 2024 · How to flatten a list using LINQ C - Flattening a list means converting a List to List. For example, let us consider a List which needs to be converted to List.The … WebAug 24, 2012 · I need to flatten a parent list and two child lists into one list. How can I do this using c# and linq? Here is my code... public class Customer { public string FirstName { get; set;} public string LastName { get; set;} // need to flatten these lists public List CreditCards { get; set;} public List

c# - Linq Flatten List of List - Stack Overflow

WebJun 14, 2024 · I just need to be able to select specific data at various levels of the tree and flatten it out. The nested structure looks like this: TopResult contains -> List each StepResult contains -> List each PropResult contains -> List. I need to flatten out the nested structure and for some reason when I … At this point I have following select which produces List>, is there a quick and efficient way without looping and creating separate list to flatten the inner lists into one. var legalEntityIds = query.Select (x => x.LegalEntities.Select (y => y.LegalEntityId)).ToList (); c# .net Share Improve this question Follow flush health service state and cache

Flatten a Stream of Lists in Java using forEach loop

WebThis post will discuss how to flatten a List in C#. We can use LINQ to flatten a list of lists. The List.SelectMany() method applies the specified transform function to each source … WebMar 23, 2016 · var result = first .Zip (second, (f, s) => new Type [] {a, b}) .SelectMany (x => x); As you can see, we first use Zip to take one element from each of the lists, and combine them into a small array of two … WebSep 5, 2024 · 5 Answers Sorted by: 4 You can use SelectMany, just concat the single parent and it's children: List newList = masterList.SelectMany (n => new [] { n }.Concat (n.Children)).ToList (); Share Improve this answer Follow answered Sep 5, 2024 at 14:40 Tim Schmelter 444k 72 677 929 Add a comment 4 flush header framing

Is it possible to use Linq to get a total count of items in a list of ...

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WebOct 18, 2024 · Oct 18, 2024 at 10:33. Add a comment. 1. You can use some handy Linq extension methods to get the job done. SelectMany will flatten the lists and select all the items, and Distinct will remove any duplicates: List mergedLists = ListsToMerge.SelectMany (x => x).Distinct ().ToList (); Share. Improve this answer. Addresses{ get; set;} } // … flush heater core 3800 series 1WebFeb 25, 2013 · public static List Flatten (Category root) { var flattened = new List {root}; var children = root.Children; if (children != null) { foreach (var child in children) { flattened.AddRange (Flatten (child)); } } return flattened; } Share Improve this answer Follow answered Oct 11, 2010 at 15:35 E.Z. Hart 5,707 1 31 24 flush health

"WebFlatten a list which one of its properties is another list of object You should use SelectMany to flatten a sequence of Main objects: Projects each element of a sequence to an … " - C# flatten a list of lists

C# flatten a list of lists

LINQ: Flatten nested collections with SelectMany

WebFeb 19, 2024 · List. Part 1 We create a list, and add sub-lists to it. The first List will contain an internal array of List references. Part 2 This method receives a parameter of type … WebIs it possible to use Linq to get a total count of items in a list of lists in C#? More Articles; How to convert from 'string' to 'System.IFormatProvider' in C#; Average value of list in C#; Expression bodied get / set accessors feature in c# 7.0; Device.OnPlatform deprecated; ASP .NET CORE could not find file or assembly with custom assembly

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WebJul 26, 2024 · Here the SelectMany call takes a sequence of inputs (the lists which make the values of the dictionary) and projects each single input into another sequence of … WebMay 24, 2024 · The issue with using a List as a DataSource to the grid is that the grid will not display properties of myClass that are collections. Like the Telephone and Emails lists. It will display a Class, however, it will default and use the classes ToString method and display that into a "single" column.. In your example, using the Contacts …

WebJan 21, 2024 · 1 2 var result = teachers.SelectMany (x => x.Classes. Select (y => new { description = y.Description, day = y.DayOFWeek, startAt = y.StartTime, endAt = … WebHere the SelectMany call takes a sequence of inputs (the lists which make the values of the dictionary) and projects each single input into another sequence of outputs - in this case …

WebAug 6, 2012 · 165. You can flatten a tree like this: IEnumerable Flatten (IEnumerable e) => e.SelectMany (c => Flatten (c.Elements)).Concat (new [] { e }); You can then filter by group using Where (...). To earn some "points for style", convert Flatten to an extension function in a static class. public static IEnumerable … Web有什么理由使用Aggregate而不是更簡單的string.Join嗎？. string joined = string.Join(", ", myCollection.Select(x => "'" + x + "'")); （如果使用的是.NET 3.5，請添加ToArray調用。. 您可以使用Aggregate （理想情況下使用StringBuilder ）實現string.Join但這並不令人愉快。假設一個非空集合，我認為應該這樣做：

WebApr 5, 2024 · Flatten a list - Rosetta Code Task Write a function to flatten the nesting in an arbitrary list of values. Your program should work on the equivalent of this list: [[1], 2, …

WebApr 9, 2024 · I want to make a system that will allow me to remove object from a list without shrinking it whenever I call the RemoveItem(). The list of the objects is shrinking whenever I try to remove one element from there. I want that list to stay the same size, so even if the object gets removed the list size stays the same. flush heater core 2006 f150WebYes, it is possible to use LINQ to get a total count of items in a list of lists in C#. You can use the SelectMany () method to flatten the list of lists into a single list and then use the Count () method to get the total count of items. In this example, we have a list of lists of integers named "listOfLists". green flannel shirt olive checkered meWebOct 8, 2013 · 11 Answers Sorted by: 32 You can do SelectMany List result = myLocationList.SelectMany (x => x.Children).ToList (); You can use where condition for some selective results like List result = myLocationList.Where (y => y.ParentID == someValue) .SelectMany (x => x.Children).ToList (); green flannel shirt outfitWebJan 1, 2013 · 1. You first have to flatten your list of lists into a single list, then group by the date, then sum each group. You didn't show any code, but it should be something along: var result = yourListOfLists.SelectMany (x => x) .GroupBy (x => x.TheDateProperty) .Select (grp => new {key = grp.Key, sum = grp.Sum (e => e.TheNumber)}); Share. flush health service in scomWebFeb 23, 2012 · If you have an enumerable (or queryable) object that when enumerated returns yet more enumerable objects, such as a list of lists or an array of hash-sets, etc, it selects the elements of those objects. So in this where values is an ICollection> it returns an IEnumerable. – Jon Hanna Feb 23, 2012 … green flannel shirt with khaki shortsWebFeb 28, 2024 · Using Linq what will be the best way of making a flattened list with these 2 objects lists. public class DataDto { public string StudentID { get; set; } public List Scores { get; set; } } public class ScoreDto { public string ExamID { get; set; } public double Mark { get; set; } } flush heater core 2007 caravanWebSep 14, 2016 · Add a comment -1 That should give you what you need: var flattened = stockItems .Select (x => new { StockName = x.StockName, WarehouseNames = x.Warehouses .Select (y => y.WarehouseName) .ToList () }) .ToList (); It will result in a collection of items that contain StockName and a list of WarehouseName strings. flush heater core coolant