2024 C# flatten a list of lists

C# flatten a list of lists

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WebMar 7, 2024 · Replace with your name. Save Program.cs. Type dotnet run in your console window to try it. You've created a list of strings, added three names to that list, … WebNov 9, 2012 · int TownId, int CompanyId, int [] Products, int [] Prices. So I can do. flatList.GroupBy (l => new { l.TownId, l.CompanyId }) To get a list of groups, which has all the products and prices for each town/company pair. Now, for each key in this lookup, I want to flatten/merge all the values. Seems like I should be able to use SelectMany, but I ...

c# - How to remove duplicate entries from a list of list - Stack Overflow

WebJan 27, 2012 · So, for example, to use it to get a list of every control on an ASP.NET page, you would call the following: List allControls = Page.Controls.Flatten (c => … 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 … manly road chemist

How can i cast a class to list in select operation with C#?

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 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 = … 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 … manly rose tattoos

Flatten a Stream of Lists in Java using forEach loop

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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 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 … manly rowletWebOct 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. manly road doctor

"WebYes, 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". " - C# flatten a list of lists

C# flatten a list of lists

c# - Iterating through a list of lists? - Stack Overflow

WebFeb 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 WebSep 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.

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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, … WebFeb 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; } }

Addresses{ get; set;} } // … WebDec 3, 2016 · To make this more readable, you can make a simple function: def flatten_list (deep_list: list [list [object]]): return list (chain.from_iterable (deep_list)). The type hinting improves the clarity of what's going on (modern IDEs would interpret this as returning a list [object] type). – Chris Collett Oct 25, 2024 at 14:34 2

WebNov 20, 2009 · I have Items from a certain source (populated from somewhere else): public class ItemsFromSource{ public ItemsFromSource(string name){ this.SourceName = name; Items = new List< WebFeb 10, 2024 · I would like to extract the strings from the list above, not allowing the lists containing the strings to have more than one item. That is, I need to have the following result: { "Apple", "Banana" } So far I have been trying the following: var result = fruits .Where (x => x != null) .Select (x => x.SingleOrDefault ()) .Where (x => x != null);

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 …

WebOct 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 (); manly rotary fun runWebHere 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 … manly royal yacht clubWebFeb 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 … manly rugby leagueWebMar 14, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. manly rlfcWebApr 12, 2024 · The solution only works on one level, which is what I needed. It could be made recursive to go deeper though: var result = parents.SelectMany (person => person.Children .Prepend (person)) .Select (p => p.Name); Which then allowed me to use all the objects in the flattened lists, including the parent objects. manly rugby clubWebApr 10, 2024 · This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. manly rugby league 2022WebJul 16, 2009 · List listA = new List { 1, 2, 3, 4, 5, 6 }; List listB = new List { 11, 12, 13, 14, 15, 16 }; List> listOfLists = new List> { … manly road veterinary clinic