C＃|元组<T1,T2,T3,T4>班级

Tuple 类用于创建四元组或四元组。它表示一个包含四个元素的元组。您可以通过调用Tuple (T1，T2，T3，T4)构造函数或通过静态Tuple.Create方法来实例化Tuple 对象。您可以使用只读的Item1 ， Item2 ， Item3和Item4实例属性来检索元组元素的值。

重要事项：

• 它实现了IStructuralComparable ， IStructuralEquatable和IComparable接口。
• 它在系统名称空间下定义。
• 它表示将多个数据合并为一个数据集。
• 它使我们能够创建，操作和访问数据集。
• 它从一个方法返回多个值，而不使用out参数。
• 它允许在单个参数的帮助下将多个值传递给方法。
• 它还可以存储重复的元素。

建设者

Constructor	Description
Tuple(T1, T2, T3, T4)	Initializes a new instance of the Tuple class.

财产

Property	Description
Item1	Gets the value of the Tuple object’s first component.
Item2	Gets the value of the current Tuple object’s second component.
Item3	Gets the value of the current Tuple object’s third component.
Item4	Gets the value of the current Tuple object’s fourth component.

例子：

// C# progtam to illustrate the constructor
// and property of Tuple Class
using System;
   
class GFG {
  
    // Main Method
    static public void Main ()
    {
        // Creating 4-Tuple
        // Using Tuple(T1, T2, T3, T4) constructor
        Tuplemytuple = new Tuple(79, 34, 67, "Geeks");
           
        // Accessing the values
        Console.WriteLine("Value of the First Component: " + mytuple.Item1);
        Console.WriteLine("Value of the Second Component: " + mytuple.Item2);
        Console.WriteLine("Value of the Third Component: " + mytuple.Item3);
        Console.WriteLine("Value of the Fourth Component: " + mytuple.Item4);
  
    }
}

输出：

Value of the First Component: 79
Value of the Second Component: 34
Value of the Third Component: 67
Value of the Fourth Component: Geeks

方法

Method	Description
Equals(Object)	Returns a value that indicates whether the current Tuple object is equal to a specified object.
GetHashCode()	Returns the hash code for the current Tuple object.
GetType()	Gets the Type of the current instance.
MemberwiseClone()	Creates a shallow copy of the current Object.
ToString()	Returns a string that represents the value of this Tuple instance.

例子：

// C# program to check whether the
// given tuples are equal or not
using System;
  
class GFG {
  
    // Main method
    static public void Main()
    {
  
        // Creating 4-Tuple
        // Using Tuple(T1,
        // T2, T3, T4) constructor
        Tuple mytuple1 = new Tuple(20, 40, 90, 89);
  
        Tuple mytuple2 = new Tuple(20, 40, 90, 89);
  
        // Using Equals method
        if (mytuple1.Equals(mytuple2)) 
        {
            Console.WriteLine("Tuple Matched..");
        }
  
        else 
        {
            Console.WriteLine("Tuple not Matched..");
        }
    }
}

输出：

Tuple Matched..

参考：

• https://docs.microsoft.com/zh-cn/dotnet/api/system.tuple-4?view=netframework-4.8