Tuple<T1,T2> Klasse

Definition

generic <typename T1, typename T2>
public ref class Tuple : IComparable, System::Collections::IStructuralComparable, System::Collections::IStructuralEquatable

generic <typename T1, typename T2>
public ref class Tuple : IComparable, System::Collections::IStructuralComparable, System::Collections::IStructuralEquatable, System::Runtime::CompilerServices::ITuple

public class Tuple<T1,T2> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable

public class Tuple<T1,T2> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable, System.Runtime.CompilerServices.ITuple

[System.Serializable]
public class Tuple<T1,T2> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable

type Tuple<'T1, 'T2> = class
    interface IStructuralComparable
    interface IStructuralEquatable
    interface IComparable

type Tuple<'T1, 'T2> = class
    interface IStructuralComparable
    interface IStructuralEquatable
    interface IComparable
    interface ITuple

type Tuple<'T1, 'T2> = class
    interface IStructuralEquatable
    interface IStructuralComparable
    interface IComparable

type Tuple<'T1, 'T2> = class
    interface IStructuralEquatable
    interface IStructuralComparable
    interface IComparable
    interface ITuple

Public Class Tuple(Of T1, T2)
Implements IComparable, IStructuralComparable, IStructuralEquatable

Public Class Tuple(Of T1, T2)
Implements IComparable, IStructuralComparable, IStructuralEquatable, ITuple

Typparameter

Vererbung

Object

Tuple<T1,T2>

Attribute

SerializableAttribute

Implementiert

IStructuralComparable IStructuralEquatable IComparable

Hinweise

Ein Tupel ist eine Datenstruktur, die über eine bestimmte Anzahl und Sequenz von Werten verfügt.A tuple is a data structure that has a specific number and sequence of values. Die Tuple<T1,T2>-Klasse stellt ein 2-Tupel-oder-Paar dar, bei dem es sich um ein Tupel mit zwei Komponenten handelt.The Tuple<T1,T2> class represents a 2-tuple, or pair, which is a tuple that has two components. Ein 2-Tupel ähnelt einer KeyValuePair<TKey,TValue>-Struktur.A 2-tuple is similar to a KeyValuePair<TKey,TValue> structure.

Sie können ein Tuple<T1,T2> Objekt instanziieren, indem Sie entweder den Tuple<T1,T2>-Konstruktor oder die statische Tuple.Create<T1,T2>(T1, T2)-Methode aufrufen.You can instantiate a Tuple<T1,T2> object by calling either the Tuple<T1,T2> constructor or the static Tuple.Create<T1,T2>(T1, T2) method. Sie können die Werte der tupelkomponenten abrufen, indem Sie die schreibgeschützten Item1 und Item2 Instanzeigenschaften verwenden.You can retrieve the values of the tuple's components by using the read-only Item1 and Item2 instance properties.

Tupel werden üblicherweise auf vier verschiedene Arten verwendet:Tuples are commonly used in four different ways:

• , Um einen einzelnen Satz von Daten darzustellen.To represent a single set of data. Beispielsweise kann ein Tupel einen Datensatz in einer Datenbank darstellen, und seine Komponenten können die Felder dieses Datensatzes darstellen.For example, a tuple can represent a record in a database, and its components can represent that record's fields.

• , Um einen einfachen Zugriff auf ein DataSet und die Bearbeitung von Daten zu ermöglichen.To provide easy access to, and manipulation of, a data set. Im folgenden Beispiel wird ein Array von Tuple<T1,T2>-Objekten definiert, die die Namen der Schüler/Studenten und ihre entsprechenden Testergebnisse enthalten.The following example defines an array of Tuple<T1,T2> objects that contain the names of students and their corresponding test scores. Anschließend wird das Array durchlaufen, um die mittlere Testbewertung zu berechnen.It then iterates the array to calculate the mean test score.

  using System;
  
  public class Example
  {
     public static void Main()
     {
        Tuple<string, Nullable<int>>[] scores = 
                      { new Tuple<string, Nullable<int>>("Jack", 78),
                        new Tuple<string, Nullable<int>>("Abbey", 92), 
                        new Tuple<string, Nullable<int>>("Dave", 88),
                        new Tuple<string, Nullable<int>>("Sam", 91), 
                        new Tuple<string, Nullable<int>>("Ed", null),
                        new Tuple<string, Nullable<int>>("Penelope", 82),
                        new Tuple<string, Nullable<int>>("Linda", 99),
                        new Tuple<string, Nullable<int>>("Judith", 84) };
        int number;
        double mean = ComputeMean(scores, out number);
        Console.WriteLine("Average test score: {0:N2} (n={1})", mean, number);
     }
  
     private static double ComputeMean(Tuple<string, Nullable<int>>[] scores, out int n) 
     {
        n = 0;      
        int sum = 0;
        foreach (var score in scores)
        {
           if (score.Item2.HasValue)
           { 
              n += 1;
              sum += score.Item2.Value;
           }
        }     
        if (n > 0)
           return sum / (double) n;
        else
           return 0;
     }
  }
  // The example displays the following output:
  //       Average test score: 88 (n=7)
  

  Module Example
     Public Sub Main()
        Dim scores() As Tuple(Of String, Nullable(Of Integer)) = 
                        { New Tuple(Of String, Nullable(Of Integer))("Jack", 78),
                          New Tuple(Of String, Nullable(Of Integer))("Abbey", 92), 
                          New Tuple(Of String, Nullable(Of Integer))("Dave", 88),
                          New Tuple(Of String, Nullable(Of Integer))("Sam", 91), 
                          New Tuple(Of String, Nullable(Of Integer))("Ed", Nothing),
                          New Tuple(Of String, Nullable(Of Integer))("Penelope", 82),
                          New Tuple(Of String, Nullable(Of Integer))("Linda", 99),
                          New Tuple(Of String, Nullable(Of Integer))("Judith", 84) }
        Dim number As Integer
        Dim mean As Double = ComputeMean(scores, number)
        Console.WriteLine("Average test score: {0:N2} (n={1})", mean, number)
     End Sub
     
     Private Function ComputeMean(scores() As Tuple(Of String, Nullable(Of Integer)), 
                                  ByRef n As Integer) As Double
        n = 0      
        Dim sum As Integer
        For Each score In scores
           If score.Item2.HasValue Then 
              n += 1
              sum += score.Item2.Value
           End If
        Next     
        If n > 0 Then
           Return sum / n
        Else
           Return 0
        End If             
     End Function
  End Module
  ' The example displays the following output:
  '       Average test score: 88 (n=7)
  

• , Wenn mehrere Werte aus einer Methode ohne Verwendung von out Parametern (in C#) oder ByRef-Parametern (in Visual Basic) zurückgegeben werden sollen.To return multiple values from a method without the use of out parameters (in C#) or ByRef parameters (in Visual Basic). Im folgenden Beispiel wird z. b. ein Tuple<T1,T2> Objekt verwendet, um den Quotienten und den Rest zurückzugeben, der aus der ganzzahligen Division resultiert.For example, the following example uses a Tuple<T1,T2> object to return the quotient and the remainder that result from integer division.

  using System;
  
  public class Class1
  {
     public static void Main()
     {
        int dividend, divisor;
        Tuple<int, int> result;
        
        dividend = 136945; divisor = 178;
        result = IntegerDivide(dividend, divisor);
        if (result != null)
           Console.WriteLine(@"{0} \ {1} = {2}, remainder {3}", 
                             dividend, divisor, result.Item1, result.Item2);
        else
           Console.WriteLine(@"{0} \ {1} = <Error>", dividend, divisor);
                          
        dividend = Int32.MaxValue; divisor = -2073;
        result = IntegerDivide(dividend, divisor);
        if (result != null)
           Console.WriteLine(@"{0} \ {1} = {2}, remainder {3}", 
                             dividend, divisor, result.Item1, result.Item2);
        else
           Console.WriteLine(@"{0} \ {1} = <Error>", dividend, divisor);
     }
  
     private static Tuple<int, int> IntegerDivide(int dividend, int divisor)
     {
        try {
           int remainder;
           int quotient = Math.DivRem(dividend, divisor, out remainder);
           return new Tuple<int, int>(quotient, remainder);
        }   
        catch (DivideByZeroException) {
           return null;
        }      
     }
  }
  // The example displays the following output:
  //       136945 \ 178 = 769, remainder 63
  //       2147483647 \ -2073 = -1035930, remainder 757
  

  Module modMain
     Public Sub Main()
        Dim dividend, divisor As Integer
        Dim result As Tuple(Of Integer, Integer)
        
        dividend = 136945 : divisor = 178
        result = IntegerDivide(dividend, divisor)
        If result IsNot Nothing Then
           Console.WriteLine("{0} \ {1} = {2}, remainder {3}", 
                             dividend, divisor, result.Item1, result.Item2)
        Else
           Console.WriteLine("{0} \ {1} = <Error>", dividend, divisor)
        End If
                          
        dividend = Int32.MaxValue : divisor = -2073
        result = IntegerDivide(dividend, divisor)
        If result IsNot Nothing Then
           Console.WriteLine("{0} \ {1} = {2}, remainder {3}", 
                             dividend, divisor, result.Item1, result.Item2)
        Else
           Console.WriteLine("{0} \ {1} = <Error>", dividend, divisor)
        End If
     End Sub
     
     Private Function IntegerDivide(dividend As Integer, divisor As Integer) As Tuple(Of Integer, Integer)
        Try
           Dim remainder As Integer
           Dim quotient As Integer = Math.DivRem(dividend, divisor, remainder)
           Return New Tuple(Of Integer, Integer)(quotient, remainder)
        Catch e As DivideByZeroException
           Return Nothing
        End Try      
     End Function
  End Module
  ' The example displays the following output:
  '       136945 \ 178 = 769, remainder 63
  '       2147483647 \ -2073 = -1035930, remainder 757
  

• , Wenn mehrere Werte über einen einzelnen Parameter an eine Methode übergeben werden sollen.To pass multiple values to a method through a single parameter. Die Thread.Start(Object)-Methode verfügt z. b. über einen einzelnen Parameter, mit dem Sie einen Wert für die Methode angeben können, die der Thread beim Start ausführt.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. Wenn Sie ein Tuple<T1,T2> Objekt als Methoden Argument bereitstellen, können Sie die Start Routine des Threads mit zwei Datenelementen bereitstellen.If you supply a Tuple<T1,T2> object as the method argument, you can supply the thread's startup routine with two items of data.

Konstruktoren

Eigenschaften

Methoden

Explizite Schnittstellenimplementierungen

Erweiterungsmethoden

Gilt für:

Siehe auch

• Tuple
• Tuple<T1>
• Tuple<T1,T2,T3>
• Tuple<T1,T2,T3,T4>
• Tuple<T1,T2,T3,T4,T5>
• Tuple<T1,T2,T3,T4,T5,T6>
• Tuple<T1,T2,T3,T4,T5,T6,T7>
• Tuple<T1,T2,T3,T4,T5,T6,T7,TRest>