Tuple<T1,T2,T3,T4> 類別
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
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 Item1 、 Item2 、 Item3 和 Item4 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 |
ITuple.Length |
取得 |
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>) |
將 |