How to create 7-Tuple or Septuple in C#?

In C#, a 7-tuple is a tuple that contains seven elements and it is also known as Septuple. You can create a 7-tuple using two different ways:

• Using Tuple<T1,T2,T3,T4,T5,T6,T7>(T1, T2, T3, T4, T5, T6, T7) Constructor
• Using the Create method

Using Tuple<T1,T2,T3,T4,T5,T6,T7>(T1, T2, T3, T4, T5, T6, T7) Constructor

You can create 7-tuple using Tuple<T1, T2, T3, T4, T5, T6, T7>(T1, T2, T3, T4, T5, T6, T7) constructor. It initializes a new instance of the Tuple<T1, T2, T3, T4, T5, T6, T7> class. But when you create a tuple using this constructor then you have to specify the type of the element stored in the tuple.

Syntax:

public Tuple (T1 item1, T2 item2, T3 item3, T4 item4, T5 item5, T6 item6, T7 item7);

Parameters:

• item1: It is the value of the first tuple component.
• item2: It is the value of the second tuple component.
• item3: It is the value of the third tuple component.
• item4: It is the value of the fourth tuple component.
• item5: It is the value of the fifth tuple component.
• item6: It is the value of the sixth tuple component.
• item7: It is the value of the seventh tuple component.

Example:

// C# program to create 7-tuple
// using the tuple constructor
using System;
public class GFG {

    // Main method
    static public void Main()
    {

        // Creating tuple with seven elements
        // Using Tuple<T1, T2, T3, T4, T5, T6,
        // T7>(T1, T2, T3, T4, T5, T6, T7)
        // constructor
        Tuple<int, int, int, int, int, int, int> My_Tuple = new Tuple<int,
               int, int, int, int, int, int>(22, 33, 44, 545, 55, 88, 66);

        Console.WriteLine("Element 1: " + My_Tuple.Item1);
        Console.WriteLine("Element 2: " + My_Tuple.Item2);
        Console.WriteLine("Element 3: " + My_Tuple.Item3);
        Console.WriteLine("Element 4: " + My_Tuple.Item4);
        Console.WriteLine("Element 5: " + My_Tuple.Item5);
        Console.WriteLine("Element 6: " + My_Tuple.Item6);
        Console.WriteLine("Element 7: " + My_Tuple.Item7);
    }
}

Output:

Element 1: 22
Element 2: 33
Element 3: 44
Element 4: 545
Element 5: 55
Element 6: 88
Element 7: 66

Using Create Method

You can also create 7-tuple with the help of Create method. When you use this method then there is no need to specify the type of the elements stored in the tuple.

Syntax:

public static Tuple<T1,T2,T3,T4,T5,T6,T7> Create<T1, T2, T3, T4, T5, T6, T7> (T1 item1, T2 item2, T3 item3, T4 item4, T5 item5, T6 item6, T7 item7);

Type Parameters:

• T1: It is the type of the first tuple component.
• T2: It is the type of the second tuple component.
• T3: It is the type of the third tuple component.
• T4: It is the type of the fourth tuple component.
• T5: It is the type of the fifth tuple component.
• T6: It is the type of the sixth tuple component.
• T7: It is the type of the seventh tuple component.

Parameters:

• item1: It is the value of the first tuple component.
• item2: It is the value of the second tuple component.
• item3: It is the value of the third tuple component.
• item4: It is the value of the fourth tuple component.
• item5: It is the value of the fifth tuple component.
• item6: It is the value of the sixth tuple component.
• item7: It is the value of the seventh tuple component.

Return Type: This method returns 7-tuple whose value is item1, item2, item3, item4, item5, item6, and item7.

Example:

// C# program to create 7-tuple
// using create method
using System;

public class GFG {

    // Main method
    static public void Main()
    {

        // Creating tuple with seven
        // elements Using Create method
        var My_Tuple = Tuple.Create("C", "C++", "Ruby",
                      "Java", "Perl", "PHP", "Python");

        Console.WriteLine("Element 1: " + My_Tuple.Item1);
        Console.WriteLine("Element 2: " + My_Tuple.Item2);
        Console.WriteLine("Element 3: " + My_Tuple.Item3);
        Console.WriteLine("Element 4: " + My_Tuple.Item4);
        Console.WriteLine("Element 5: " + My_Tuple.Item5);
        Console.WriteLine("Element 6: " + My_Tuple.Item6);
        Console.WriteLine("Element 7: " + My_Tuple.Item7);
    }
}

Output:

Element 1: C
Element 2: C++
Element 3: Ruby
Element 4: Java
Element 5: Perl
Element 6: PHP
Element 7: Python

Reference:

• https://docs.microsoft.com/en-us/dotnet/api/system.tuple-7.-ctor?view=netframework-4.8
• https://docs.microsoft.com/en-us/dotnet/api/system.tuple.create?view=netframework-4.8#System_Tuple_Create__7___0___1___2___3___4___5___6_