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Tuple<T1, T2, T3, T4, T5> Class

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Represents a 5-tuple, or quintuple.

Inheritance Hierarchy

System.Object
  System.Tuple<T1, T2, T3, T4, T5>

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

Syntax

'Declaration
Public Class Tuple(Of T1, T2, T3, T4, T5) _
    Implements IStructuralEquatable, IStructuralComparable, IComparable
public class Tuple<T1, T2, T3, T4, T5> : IStructuralEquatable, 
    IStructuralComparable, IComparable

Type Parameters

  • T1
    The type of the tuple's first component.
  • T2
    The type of the tuple's second component.
  • T3
    The type of the tuple's third component.
  • T4
    The type of the tuple's fourth component.
  • T5
    The type of the tuple's fifth component.

The Tuple<T1, T2, T3, T4, T5> type exposes the following members.

Constructors

  Name Description
Public method Tuple<T1, T2, T3, T4, T5> Initializes a new instance of the Tuple<T1, T2, T3, T4, T5> class.

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Properties

  Name Description
Public property Item1 Gets the value of the current Tuple<T1, T2, T3, T4, T5> object's first component.
Public property Item2 Gets the value of the current Tuple<T1, T2, T3, T4, T5> object's second component.
Public property Item3 Gets the value of the current Tuple<T1, T2, T3, T4, T5> object's third component.
Public property Item4 Gets the value of the current Tuple<T1, T2, T3, T4, T5> object's fourth component.
Public property Item5 Gets the value of the current Tuple<T1, T2, T3, T4, T5> object's fifth component.

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Methods

  Name Description
Public method Equals Returns a value that indicates whether the current Tuple<T1, T2, T3, T4, T5> object is equal to a specified object. (Overrides Object.Equals(Object).)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public method GetHashCode Returns the hash code for the current Tuple<T1, T2, T3, T4, T5> object. (Overrides Object.GetHashCode().)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method ToString Returns a string that represents the value of this Tuple<T1, T2, T3, T4, T5> instance. (Overrides Object.ToString().)

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Explicit Interface Implementations

  Name Description
Explicit interface implemetationPrivate method IComparable.CompareTo Compares the current Tuple<T1, T2, T3, T4, T5> object to a specified object and returns an integer that indicates whether the current object is before, after, or in the same position as the specified object in the sort order.
Explicit interface implemetationPrivate method IStructuralComparable.CompareTo Compares the current Tuple<T1, T2, T3, T4, T5> object to a specified object by using a specified comparer and returns an integer that indicates whether the current object is before, after, or in the same position as the specified object in the sort order.
Explicit interface implemetationPrivate method IStructuralEquatable.Equals Returns a value that indicates whether the current Tuple<T1, T2, T3, T4, T5> object is equal to a specified object based on a specified comparison method.
Explicit interface implemetationPrivate method IStructuralEquatable.GetHashCode Calculates the hash code for the current Tuple<T1, T2, T3, T4, T5> object by using a specified computation method.

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Remarks

A tuple is a data structure that has a specific number and sequence of values. The Tuple<T1, T2, T3, T4, T5> class represents a 5-tuple, or quintuple, which is a tuple that has five components.

You can instantiate a Tuple<T1, T2, T3, T4, T5> object by calling either the Tuple<T1, T2, T3, T4, T5> constructor or the static Tuple.Create<T1, T2, T3, T4, T5>(T1, T2, T3, T4, T5) method. You can retrieve the value of the tuple's components by using the read-only Item1, Item2, Item3, Item4, and Item5 instance properties.

Tuples are commonly used in four different ways:

  • To represent a single set of data. For example, a tuple can represent a database record, and its components can represent individual fields of the record.

  • To provide easy access to, and manipulation of, a data set. The following example defines an array of Tuple<T1, T2, T3, T4, T5> objects that contain the names of running backs in American football, the number of games in which they played, and the number of carries, total yards gained, and touchdowns scored during those games. The array is passed to the ComputeStatistics method, which calculates each running back's number of carries per game, average yards per game, average yards per carry, and average number of touchdowns per attempt.

    Imports System.Collections.Generic
    
    Module Example
       Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
          ' Organization of runningBacks 5-tuple:
          '    Component 1: Player name
          '    Component 2: Number of games played
          '    Component 3: Number of attempts (carries)
          '    Component 4: Number of yards gained 
          '    Component 5: Number of touchdowns   
          Dim runningBacks() As Tuple(Of String, Integer, Integer, Integer, Integer) = _
              { Tuple.Create("Payton, Walter", 190, 3838, 16726, 110), _  
                Tuple.Create("Sanders, Barry", 153, 3062, 15269, 99), _         
                Tuple.Create("Brown, Jim", 118, 2359, 12312, 106), _           
                Tuple.Create("Dickerson, Eric", 144, 2996, 13259, 90), _            
                Tuple.Create("Faulk, Marshall", 176, 2836, 12279, 100) } 
          ' Calculate statistics.
          ' Organization of runningStats 5-tuple:
          '    Component 1: Player name
          '    Component 2: Number of attempts per game
          '    Component 3: Number of yards per game
          '    Component 4: Number of yards per attempt 
          '    Component 5: Number of touchdowns per attempt   
          Dim runningStats() = ComputeStatistics(runningBacks)
    
          ' Display the result.          
          outputBlock.Text += String.Format("{0,-16} {1,5} {2,6} {3,7} {4,7} {5,7} {6,7} {7,5} {8,7}", _
                            "Name", "Games", "Att", "Att/Gm", "Yards", "Yds/Gm", _
                            "Yds/Att", "TD", "TD/Att") + vbCrLf
          outputBlock.Text &= vbCrLf
          For ctr As Integer = 0 To runningBacks.Length - 1
             outputBlock.Text += String.Format("{0,-16} {1,5} {2,6:N0} {3,7:N1} {4,7:N0} {5,7:N1} {6,7:N2} {7,5} {8,7:N3}", _
                               runningBacks(ctr).Item1, runningBacks(ctr).Item2, runningBacks(ctr).Item3, _
                               runningStats(ctr).Item2, runningBacks(ctr).Item4, runningStats(ctr).Item3, _
                               runningStats(ctr).Item4, runningBacks(ctr).Item5, runningStats(ctr).Item5) + vbCrLf
             outputBlock.Text &= vbCrLf
          Next
       End Sub
    
       Private Function ComputeStatistics(ByVal players() As Tuple(Of String, Integer, Integer, Integer, Integer)) _
                        As Tuple(Of String, Double, Double, Double, Double)()
    
          Dim result As Tuple(Of String, Double, Double, Double, Double)
          Dim list As New List(Of Tuple(Of String, Double, Double, Double, Double))()
    
          For Each player In players
             ' Create result object containing player name and statistics.
             result = Tuple.Create(player.Item1, _ 
                                player.Item3/player.Item2, player.Item4/player.Item2, _
                                player.Item4/player.Item3, player.Item5/player.Item3)
             list.Add(result)
          Next
          Return list.ToArray()
       End Function
    End Module
    ' The example displays the following output:
    '    Name             Games    Att  Att/Gm   Yards  Yds/Gm Yds/Att    TD  TD/Att
    '    
    '    Payton, Walter     190  3,838    20.2  16,726    88.0    4.36   110   0.029
    '    
    '    Sanders, Barry     153  3,062    20.0  15,269    99.8    4.99    99   0.032
    '    
    '    Brown, Jim         118  2,359    20.0  12,312   104.3    5.22   106   0.045
    '    
    '    Dickerson, Eric    144  2,996    20.8  13,259    92.1    4.43    90   0.030
    '    
    '    Faulk, Marshall    176  2,836    16.1  12,279    69.8    4.33   100   0.035
    
    using System;
    using System.Collections.Generic;
    
    public class Example
    {
       public static void Demo(System.Windows.Controls.TextBlock outputBlock)
       {
          // Organization of runningBacks 5-tuple:
          //    Component 1: Player name
          //    Component 2: Number of games played
          //    Component 3: Number of attempts (carries)
          //    Component 4: Number of yards gained 
          //    Component 5: Number of touchdowns   
          Tuple<string, int, int, int, int>[] runningBacks =
               { Tuple.Create("Payton, Walter", 190, 3838, 16726, 110),  
                 Tuple.Create("Sanders, Barry", 153, 3062, 15269, 99),            
                 Tuple.Create("Brown, Jim", 118, 2359, 12312, 106),            
                 Tuple.Create("Dickerson, Eric", 144, 2996, 13259, 90),            
                 Tuple.Create("Faulk, Marshall", 176, 2836, 12279, 100) };
          // Calculate statistics.
          // Organization of runningStats 5-tuple:
          //    Component 1: Player name
          //    Component 2: Number of attempts per game
          //    Component 3: Number of yards per game
          //    Component 4: Number of yards per attempt 
          //    Component 5: Number of touchdowns per attempt   
          Tuple<string, double, double, double, double>[] runningStats =
              ComputeStatistics(runningBacks);
    
          // Display the result.          
          outputBlock.Text += String.Format("{0,-16} {1,5} {2,6} {3,7} {4,7} {5,7} {6,7} {7,5} {8,7}\n",
                            "Name", "Games", "Att", "Att/Gm", "Yards", "Yds/Gm",
                            "Yds/Att", "TD", "TD/Att") + "\n";
          for (int ctr = 0; ctr < runningBacks.Length; ctr++)
             outputBlock.Text += String.Format("{0,-16} {1,5} {2,6:N0} {3,7:N1} {4,7:N0} {5,7:N1} {6,7:N2} {7,5} {8,7:N3}\n",
                               runningBacks[ctr].Item1, runningBacks[ctr].Item2, runningBacks[ctr].Item3,
                               runningStats[ctr].Item2, runningBacks[ctr].Item4, runningStats[ctr].Item3,
                               runningStats[ctr].Item4, runningBacks[ctr].Item5, runningStats[ctr].Item5) + "\n";
       }
    
       private static Tuple<string, double, double, double, double>[] ComputeStatistics(
                    Tuple<string, int, int, int, int>[] players)
       {
          Tuple<string, double, double, double, double> result;
          var list = new List<Tuple<string, double, double, double, double>>();
    
          foreach (var player in players)
          {
             // Create result object containing player name and statistics.
             result = Tuple.Create(player.Item1,
                                   player.Item3 / ((double)player.Item2),
                                   player.Item4 / ((double)player.Item2),
                                   player.Item4 / ((double)player.Item3),
                                   player.Item5 / ((double)player.Item3));
             list.Add(result);
          }
          return list.ToArray();
       }
    }
    // The example displays the following output:
    //    Name             Games    Att  Att/Gm   Yards  Yds/Gm Yds/Att    TD  TD/Att
    //    
    //    Payton, Walter     190  3,838    20.2  16,726    88.0    4.36   110   0.029
    //    
    //    Sanders, Barry     153  3,062    20.0  15,269    99.8    4.99    99   0.032
    //    
    //    Brown, Jim         118  2,359    20.0  12,312   104.3    5.22   106   0.045
    //    
    //    Dickerson, Eric    144  2,996    20.8  13,259    92.1    4.43    90   0.030
    //    
    //    Faulk, Marshall    176  2,836    16.1  12,279    69.8    4.33   100   0.035
    
  • To return multiple values from a method without the use of out parameters (in C#) or ByRef parameters (in Visual Basic). For example, the previous example returns its computed statistics, along with the name of the player, in an array of Tuple<T1, T2, T3, T4, T5> objects.

  • To pass multiple values to a method through a single parameter. For example, the Thread.Start(Object) method has a single parameter that lets you supply one value to the method that the thread executes at startup. If you supply a Tuple<T1, T2, T3, T4, T5> object as the method argument, you can supply the thread’s startup routine with five items of data.

Version Information

Silverlight

Supported in: 5, 4

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.