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Tuple<T1,T2,T3,T4> 類別

定義

代表 4-Tuple 或四重物件。

generic <typename T1, typename T2, typename T3, typename T4>
public ref class Tuple : IComparable, System::Collections::IStructuralComparable, System::Collections::IStructuralEquatable
generic <typename T1, typename T2, typename T3, typename T4>
public ref class Tuple : IComparable, System::Collections::IStructuralComparable, System::Collections::IStructuralEquatable, System::Runtime::CompilerServices::ITuple
public class Tuple<T1,T2,T3,T4> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable
public class Tuple<T1,T2,T3,T4> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable, System.Runtime.CompilerServices.ITuple
[System.Serializable]
public class Tuple<T1,T2,T3,T4> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable
type Tuple<'T1, 'T2, 'T3, 'T4> = class
    interface IStructuralComparable
    interface IStructuralEquatable
    interface IComparable
type Tuple<'T1, 'T2, 'T3, 'T4> = class
    interface IStructuralComparable
    interface IStructuralEquatable
    interface IComparable
    interface ITuple
[<System.Serializable>]
type Tuple<'T1, 'T2, 'T3, 'T4> = class
    interface IStructuralEquatable
    interface IStructuralComparable
    interface IComparable
[<System.Serializable>]
type Tuple<'T1, 'T2, 'T3, 'T4> = class
    interface IStructuralEquatable
    interface IStructuralComparable
    interface IComparable
    interface ITuple
Public Class Tuple(Of T1, T2, T3, T4)
Implements IComparable, IStructuralComparable, IStructuralEquatable
Public Class Tuple(Of T1, T2, T3, T4)
Implements IComparable, IStructuralComparable, IStructuralEquatable, ITuple

類型參數

T1

Tuple 第 1 個元件的型別。

T2

Tuple 第 2 個元件的型別。

T3

Tuple 第 3 個元件的型別。

T4

Tuple 第 4 個元件的型別。

繼承
Tuple<T1,T2,T3,T4>
屬性
實作

備註

Tuple 是具有特定數目和值序列的資料結構。 類別 Tuple<T1,T2,T3,T4> 代表 4 元組或三元組,這是具有四個元件的 Tuple。

您可以呼叫建構函式或靜態 Tuple.Create<T1,T2,T3,T4>(T1, T2, T3, T4) 方法來 Tuple<T1,T2,T3,T4> 具現化 Tuple<T1,T2,T3,T4> 物件。 您可以使用唯讀 Item1Item2Item3Item4 實例屬性來擷取 Tuple 元件的值。

Tuple 通常以四種不同的方式使用:

  • 表示單一資料集。 例如,Tuple 可以代表資料庫記錄,而其元件可以代表記錄的個別欄位。

  • 若要提供資料集的輕鬆存取和操作。 下列範例會定義物件的陣列 Tuple<T1,T2,T3,T4> ,這些物件包含足球投手的名稱、他們傾斜的旅館數目,以及 (計分且沒有欄位錯誤) 的回合數,以及他們放棄的點擊次數。 陣列會傳遞至 ComputeStatistics 方法,它會計算每個玩家所獲得的回合平均, (九個旅館遊戲) 中指定的平均執行次數,以及每個旅館所指定的平均點擊次數。 方法也會使用這兩個平均值來計算假設的有效性平均值。

    using System;
    using System.Collections.Generic;
    
    public class Example
    {
       public static void Main()
       {
          Tuple<string, decimal, int, int>[] pitchers  =  
               { Tuple.Create("McHale, Joe", 240.1m, 221, 96),
                 Tuple.Create("Paul, Dave", 233.1m, 231, 84), 
                 Tuple.Create("Williams, Mike", 193.2m, 183, 86),
                 Tuple.Create("Blair, Jack", 168.1m, 146, 65), 
                 Tuple.Create("Henry, Walt", 140.1m, 96, 30),
                 Tuple.Create("Lee, Adam", 137.2m, 109, 45),
                 Tuple.Create("Rohr, Don", 101.0m, 110, 42) };
          Tuple<string, double, double, double>[] results= ComputeStatistics(pitchers);
    
          // Display the results.
          Console.WriteLine("{0,-20} {1,9} {2,11} {3,15}\n", 
                            "Pitcher", "ERA", "Hits/Inn.", "Effectiveness");
          foreach (var result in results)
             Console.WriteLine("{0,-20} {1,9:F2} {2,11:F2} {3,15:F2}",  
                            result.Item1, result.Item2, result.Item3, result.Item4);
       }
    
       private static Tuple<string, double, double, double>[] ComputeStatistics(Tuple<string, decimal, int, int>[] pitchers)
       {    
          var list = new List<Tuple<string, double, double, double>>();
          Tuple<string, double, double, double> result;
    
          foreach (var pitcher in pitchers)
          {
             // Decimal portion of innings pitched represents 1/3 of an inning
             double innings = (double) Math.Truncate(pitcher.Item2);
             innings = innings + (((double)pitcher.Item2 - innings) * .33);
             
             double ERA = pitcher.Item4/innings * 9;
             double hitsPerInning = pitcher.Item3/innings;
             double EI = (ERA * 2 + hitsPerInning * 9)/3;
             result = new Tuple<string, double, double, double>
                               (pitcher.Item1, ERA, hitsPerInning, EI);
             list.Add(result);
          }
          return list.ToArray();
       }
    }
    // The example displays the following output;
    //       Pitcher                    ERA   Hits/Inn.   Effectiveness
    //       
    //       McHale, Joe               3.60        0.92            5.16
    //       Paul, Dave                3.24        0.99            5.14
    //       Williams, Mike            4.01        0.95            5.52
    //       Blair, Jack               3.48        0.87            4.93
    //       Henry, Walt               1.93        0.69            3.34
    //       Lee, Adam                 2.95        0.80            4.36
    //       Rohr, Don                 3.74        1.09            5.76
    
    open System
    
    let computeStatistics (pitchers: Tuple<string, decimal, int, int>[]) =
        [| for pitcher in pitchers do
            // Decimal portion of innings pitched represents 1/3 of an inning
            let innings =  truncate (double pitcher.Item2) |> double
            let innings = innings + (double pitcher.Item2 - innings) * 0.33
            
            let ERA = double pitcher.Item4 / innings * 9.
            let hitsPerInning = double pitcher.Item3 / innings
            let EI = (ERA * 2. + hitsPerInning * 9.) / 3.
            Tuple<string, double, double, double>(pitcher.Item1, ERA, hitsPerInning, EI)|]
    
    let pitchers  =  
        [| Tuple.Create("McHale, Joe", 240.1m, 221, 96)
           Tuple.Create("Paul, Dave", 233.1m, 231, 84)
           Tuple.Create("Williams, Mike", 193.2m, 183, 86)
           Tuple.Create("Blair, Jack", 168.1m, 146, 65) 
           Tuple.Create("Henry, Walt", 140.1m, 96, 30)
           Tuple.Create("Lee, Adam", 137.2m, 109, 45)
           Tuple.Create("Rohr, Don", 101.0m, 110, 42) |]
    
    let results = computeStatistics pitchers
    
    // Display the results.
    printfn "%-20s %9s %11s %15s\n" "Pitcher" "ERA" "Hits/Inn." "Effectiveness"
    for result in results do
        printfn $"{result.Item1,-20} {result.Item2,9:F2} {result.Item3,11:F2} {result.Item4,15:F2}"
    
    // The example displays the following output
    //       Pitcher                    ERA   Hits/Inn.   Effectiveness
    //       
    //       McHale, Joe               3.60        0.92            5.16
    //       Paul, Dave                3.24        0.99            5.14
    //       Williams, Mike            4.01        0.95            5.52
    //       Blair, Jack               3.48        0.87            4.93
    //       Henry, Walt               1.93        0.69            3.34
    //       Lee, Adam                 2.95        0.80            4.36
    //       Rohr, Don                 3.74        1.09            5.76
    
    Imports System.Collections.Generic
    
    Module Example
       Public Sub Main()
          Dim pitchers() =  
                   { Tuple.Create("McHale, Joe", 240.1d, 221, 96),
                     Tuple.Create("Paul, Dave", 233.1d, 231, 84), 
                     Tuple.Create("Williams, Mike", 193.2d, 183, 86),
                     Tuple.Create("Blair, Jack", 168.1d, 146, 65), 
                     Tuple.Create("Henry, Walt", 140.1d, 96, 30),
                     Tuple.Create("Lee, Adam", 137.2d, 109, 45),
                     Tuple.Create("Rohr, Don", 101.0d, 110, 42) }
          Dim results() = ComputeStatistics(pitchers)
    
          ' Display the results.
          Console.WriteLine("{0,-20} {1,9} {2,11} {3,15}", "Pitcher", "ERA", "Hits/Inn.", "Effectiveness")
          Console.WriteLine()
          For Each result In results
             Console.WriteLine("{0,-20} {1,9:F2} {2,11:F2} {3,15:F2}",  
                            result.Item1, result.Item2, result.Item3, result.Item4)
          Next
       End Sub
       
       Private Function ComputeStatistics(pitchers() As Tuple(Of String, Decimal, Integer, Integer)) _ 
                                    As Tuple(Of String, Double, Double, Double)()
          Dim list As New List(Of Tuple(Of String, Double, Double, Double))
          Dim result As Tuple(Of String, Double, Double, Double)
    
          For Each pitcher As Tuple(Of String, Decimal, Integer, Integer) In pitchers
             ' Decimal portion of innings pitched represents 1/3 of an inning
             Dim innings As Double = CDbl(Math.Truncate(pitcher.Item2))
             innings = innings + ((pitcher.Item2 - innings) * .33)
             
             Dim ERA As Double = pitcher.Item4/innings * 9
             Dim hitsPerInning As Double = pitcher.Item3/innings
             Dim EI As Double = (ERA * 2 + hitsPerInning * 9)/3
             result = New Tuple(Of String, Double, Double, Double) _
                               (pitcher.Item1, ERA, hitsPerInning, EI)
             list.Add(result) 
          Next
          Return list.ToArray()
       End Function
    End Module
    ' The example displays the following output:
    '       Pitcher                    ERA   Hits/Inn.   Effectiveness
    '       
    '       McHale, Joe               3.60        0.92            5.16
    '       Paul, Dave                3.24        0.99            5.14
    '       Williams, Mike            4.01        0.95            5.52
    '       Blair, Jack               3.48        0.87            4.93
    '       Henry, Walt               1.93        0.69            3.34
    '       Lee, Adam                 2.95        0.80            4.36
    '       Rohr, Don                 3.74        1.09            5.76
    
  • 若要從方法傳回多個值,而不在 C#) 中使用 out 參數 (,或在 ByRef Visual Basic) 中傳回參數 (。 例如,上一個範例會傳回其計算統計資料,以及物件陣列 Tuple<T1,T2,T3,T4> 中的投手名稱。

  • 透過單一參數將多個值傳遞至方法。 例如, Thread.Start(Object) 方法具有單一參數,可讓您將一個值提供給執行緒在啟動時執行的方法。 如果您提供 Tuple<T1,T2,T3,T4> 物件做為方法引數,則可以提供執行緒的啟動常式,其中包含四個專案的資料。

建構函式

Tuple<T1,T2,T3,T4>(T1, T2, T3, T4)

初始化 Tuple<T1,T2,T3,T4> 類別的新執行個體。

屬性

Item1

取得目前 Tuple<T1,T2,T3,T4> 物件之第一個元件的值。

Item2

取得目前 Tuple<T1,T2,T3,T4> 物件之第二個元件的值。

Item3

取得目前 Tuple<T1,T2,T3,T4> 物件之第三個元件的值。

Item4

取得目前 Tuple<T1,T2,T3,T4> 物件之第四個元件的值。

方法

Equals(Object)

傳回值,這個值表示目前的 Tuple<T1,T2,T3,T4> 物件是否等於指定的物件。

GetHashCode()

傳回目前 Tuple<T1,T2,T3,T4> 物件的雜湊碼。

GetType()

取得目前執行個體的 Type

(繼承來源 Object)
MemberwiseClone()

建立目前 Object 的淺層複製。

(繼承來源 Object)
ToString()

傳回字串,表示這個 Tuple<T1,T2,T3,T4> 執行個體的值。

明確介面實作

IComparable.CompareTo(Object)

將目前的 Tuple<T1,T2,T3,T4> 物件與指定的物件比較,並傳回可指出目前物件在排序次序中,是否在指定物件之前、之後或者相同之位置的整數。

IStructuralComparable.CompareTo(Object, IComparer)

使用指定的比較子將目前的 Tuple<T1,T2,T3,T4> 物件和指定的物件進行比較,並且傳回一個整數,表示目前的物件在排序順序中位於指定之物件的前面、後面還是相的位置。

IStructuralEquatable.Equals(Object, IEqualityComparer)

傳回值,這個值表示依據指定的比較方法,目前的 Tuple<T1,T2,T3,T4> 物件是否等於指定的物件。

IStructuralEquatable.GetHashCode(IEqualityComparer)

使用指定的計算方法,計算目前 Tuple<T1,T2,T3,T4> 物件的雜湊碼。

ITuple.Item[Int32]

取得指定的 Tuple 項目值。

ITuple.Length

取得 Tuple 中的項目數目。

擴充方法

Deconstruct<T1,T2,T3,T4>(Tuple<T1,T2,T3,T4>, T1, T2, T3, T4)

將具有 4 個元素的元組解構為不同的變數。

ToValueTuple<T1,T2,T3,T4>(Tuple<T1,T2,T3,T4>)

Tuple 類別的執行個體轉換為 ValueTuple 結構的執行個體。

適用於

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