GetInstance를 활용한 List<string> 예제

GetInstance를 활용한 List<string> 예제,ㅡㅡㅡ,ㅡㅡㅡ
GetInstance를 활용한 List<string> 예제,ㅡㅡㅡ,ㅡㅡㅡ

public List<string> redisSenderQueueNM

using System; using System.Collections.Generic; public class APMMemory {     private static APMMemory apmMemory;     private List<string> redissenderqueuenm = new List<string>();     public List<string> redisSenderQueueNM     {         get { return redissenderqueuenm; }         set { redissenderqueuenm = value; }     }     private APMMemory() { }     public static APMMemory GetInstance     {         get         {             if (apmMemory == null)                 apmMemory = new APMMemory();             return apmMemory;         }     }     // 문자열을 추가할 때 중복을 체크하는 메서드     public void AddQueueName(string queueName)     {         if (!redissenderqueuenm.Contains(queueName))         {             redissenderqueuenm.Add(queueName);             Console.WriteLine($"Added: {queueName}");         }         else         {             Console.WriteLine($"Queue name '{queueName}' already exists and was not added.");         }     } } public class Program {     public static void Main(string[] args)     {         // Singleton instance 가져오기         APMMemory apmMemory = APMMemory.GetInstance;         // 중복되지 않게 문자열을 리스트에 추가         apmMemory.AddQueueName("Queue1");         apmMemory.AddQueueName("Queue2");         apmMemory.AddQueueName("Queue3");         // 중복되는 문자열 추가 시도         apmMemory.AddQueueName("Queue2");  // 이미 존재하는 문자열         apmMemory.AddQueueName("Queue4");         // redisSenderQueueNM 리스트 출력         Console.WriteLine("\nFinal Redis Sender Queue Names:");         foreach (string queueName in apmMemory.redisSenderQueueNM)         {             Console.WriteLine(queueName);         }     } }