如何在 C# 中创建 4 元组或四元组?
Tuple<T1, T2, T3, T4> 类表示一个 4 元组,称为四元组。元组是一个包含一系列元素的数据结构。
它用于 −
- 更容易地访问数据集。
- 更容易地操作数据集。
- 表示一个单一的以数据集。
- 从一个方法返回多个值
- 向一个方法传递多个值
示例
现在让我们看一个在 C# 中实现 4 元组的示例 −
using System; public class Demo { public static void Main(string[] args) { Tuple<string,string,string,string> tuple = new Tuple<string,string,string,string>("nathan", "steve", "katie", "tim"); Console.WriteLine("Value (Item1)= " + tuple.Item1); Console.WriteLine("Value (Item2)= " + tuple.Item2); Console.WriteLine("Value (Item3)= " + tuple.Item3); Console.WriteLine("Value (Item4)= " + tuple.Item4); if (tuple.Item1 == "nathan") { Console.WriteLine("Exists: Tuple Value = " +tuple.Item1); } if (tuple.Item2 == "jack") { Console.WriteLine("Exists: Tuple Value = " +tuple.Item2); } if (tuple.Item3 == "katie") { Console.WriteLine("Exists: Tuple Value = " +tuple.Item3); } if (tuple.Item4 == "tom") { Console.WriteLine("Exists: Tuple Value = " +tuple.Item4); } } }
输出
这将产生以下输出 −
Value (Item1)= nathan Value (Item2)= steve Value (Item3)= katie Value (Item4)= tom Exists: Tuple Value = nathan Exists: Tuple Value = katie
示例
现在让我们看另一个在 C# 中实现 4 元组的示例 −
using System; public class Demo { public static void Main(string[] args) { Tuple<int,int,int,int> tuple = new Tuple<int,int,int,int>(100, 150, 300, 450); Console.WriteLine("Value (Item1)= " + tuple.Item1); Console.WriteLine("Value (Item2)= " + tuple.Item2); Console.WriteLine("Value (Item3)= " + tuple.Item3); Console.WriteLine("Value (Item4)= " + tuple.Item4); if (tuple.Item1 == 100) { Console.WriteLine("Exists: Tuple Item 1 = " +tuple.Item1); } if (tuple.Item2 == 250) { Console.WriteLine("Exists: Tuple Item 2 = " +tuple.Item2); } if (tuple.Item3 == 270) { Console.WriteLine("Exists: Tuple Item 3 = " +tuple.Item3); } if (tuple.Item4 == 300) { Console.WriteLine("Exists: Tuple Item 4 = " +tuple.Item4); } } }
输出
这将产生以下输出 −
Value (Item1)= 100 Value (Item2)= 150 Value (Item3)= 300 Value (Item4)= 450 Exists: Tuple Item 1 = 100
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