Check list empty C#
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Sign Up to our social questions and Answers to ask questions, answer people’s questions, and connect with other people. Show my_list = [] if not my_list: print("the list is empty") Output the list is emptyIf my_list is empty then not returns True. It is the most pythonic way of testing emptiness. If you want to learn more about boolean truth value, you can refer to Truth Value Testing. Example 2: Using len()my_list = [] if not len(my_list): print("the list is empty")Output the list is emptyIn this example, length of list is used to check if there is any element in the list. If the length of a list is 0, then the list is empty. Example 3: Comparing with []my_list = [] if my_list == []: print("The list is empty")Output The list is empty[] is an empty list, therefore if my_list has no elements, then it should be equal to [].
public member function
bool empty() const noexcept; Test whether container is empty This function does not modify the container in any way. To clear the content of a list container, see list::clear.
CsharpProgrammingServer Side Programming Use lists in C# to store elements and fetch it. Let us see an example. ExampleLive Demo using System; using System.Collections.Generic; public class Demo { public static void Main(string[] args) { var subjects = new ListOutputMaths Java English Science Physics ChemistryNow to check whether a list is empty or not, use the Count property. if (subjects.Count == 0) Console.WriteLine("List is empty!");Now let us see the complete code. ExampleLive Demo using System; using System.Collections.Generic; public class Demo { public static void Main(string[] args) { var subjects = new ListOutputMaths Java English Science Physics Chemistry
 Published on 18-Sep-2018 08:24:12
CsharpProgrammingServer Side Programming Use the Any method to find whether the list is empty or not. Set the list − var subjects = new ListNow set the following condition to check whether the list is empty or not − bool isEmpty = !subjects.Any(); if(isEmpty) { Console.WriteLine("Empty"); }else { Console.WriteLine("List is not empty"); }The following is the complete code − ExampleLive Demo using System; using System.Collections.Generic; using System.Linq; public class Demo { public static void Main(string[] args) { var subjects = new List
Published on 08-Aug-2018 12:35:06 This tutorial will introduce methods to check whether a list is empty or not in C#. Check Whether a List Is Empty With the List.Count Property in C#The List.Count property gets the number of elements inside a list in C#. The List.Count is 0 if the list is empty. The following code example shows us how to check whether a list is empty or not with the List.Count property in C#. using System; using System.Collections.Generic; using System.Linq; namespace check_empty_list { class Program { static void Main(string[] args) { ListOutput: List is EmptyIn the above code, we initialize an empty list of strings emptyList and check whether the list is empty or not with the List.Count property in C#. Check Whether a List Is Empty With the List.Any() Function in C#The List.Any() function can also be used to check whether the list is empty or not in C#. The return type of the List.Any() function is boolean. If there is an element inside the list, the List.Any() function returns true; otherwise, false. See the below example code. using System; using System.Collections.Generic; using System.Linq; namespace check_empty_list { class Program { static void Main(string[] args) { ListOutput: List is EmptyIn the above code, we initialize an empty list of strings emptyList and check whether the list is empty or not with the List.Any() function in C#. DelftStack articles are written by software geeks like you. If you also would like to contribute to DelftStack by writing paid articles, you can check the write for us page. Related Article - Csharp List |
