Tuple<T1,T2,T3> Class
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Represents a 3-tuple, or triple.
generic <typename T1, typename T2, typename T3>
public ref class Tuple : IComparable, System::Collections::IStructuralComparable, System::Collections::IStructuralEquatable
generic <typename T1, typename T2, typename T3>
public ref class Tuple : IComparable, System::Collections::IStructuralComparable, System::Collections::IStructuralEquatable, System::Runtime::CompilerServices::ITuple
public class Tuple<T1,T2,T3> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable
public class Tuple<T1,T2,T3> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable, System.Runtime.CompilerServices.ITuple
[System.Serializable]
public class Tuple<T1,T2,T3> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable
type Tuple<'T1, 'T2, 'T3> = class
interface IStructuralComparable
interface IStructuralEquatable
interface IComparable
type Tuple<'T1, 'T2, 'T3> = class
interface IStructuralComparable
interface IStructuralEquatable
interface IComparable
interface ITuple
[<System.Serializable>]
type Tuple<'T1, 'T2, 'T3> = class
interface IStructuralEquatable
interface IStructuralComparable
interface IComparable
[<System.Serializable>]
type Tuple<'T1, 'T2, 'T3> = class
interface IStructuralEquatable
interface IStructuralComparable
interface IComparable
interface ITuple
Public Class Tuple(Of T1, T2, T3)
Implements IComparable, IStructuralComparable, IStructuralEquatable
Public Class Tuple(Of T1, T2, T3)
Implements IComparable, IStructuralComparable, IStructuralEquatable, ITuple
- 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.
- Inheritance
-
Tuple<T1,T2,T3>
- Attributes
- Implements
A tuple is a data structure that has a specific number and sequence of values. The Tuple<T1,T2,T3> class represents a 3-tuple, or triple, which is a tuple that has three components.
You can instantiate a Tuple<T1,T2,T3> object by calling either the Tuple<T1,T2,T3> constructor or the static Tuple.Create<T1,T2,T3>(T1, T2, T3) method. You can retrieve the values of the tuple's components by using the read-only Item1, Item2, and Item3 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> objects that contain the names of students, their average test scores, and the number of tests taken. The array is passed to the
ComputeStatistics
method, which calculates the mean and standard deviation of the test scores.using System; public class Example { public static void Main() { Tuple<string, double, int>[] scores = { Tuple.Create("Jack", 78.8, 8), Tuple.Create("Abbey", 92.1, 9), Tuple.Create("Dave", 88.3, 9), Tuple.Create("Sam", 91.7, 8), Tuple.Create("Ed", 71.2, 5), Tuple.Create("Penelope", 82.9, 8), Tuple.Create("Linda", 99.0, 9), Tuple.Create("Judith", 84.3, 9) }; var result = ComputeStatistics(scores); Console.WriteLine("Mean score: {0:N2} (SD={1:N2}) (n={2})", result.Item2, result.Item3, result.Item1); } private static Tuple<int, double, double> ComputeStatistics(Tuple<string, double, int>[] scores) { int n = 0; double sum = 0; // Compute the mean. foreach (var score in scores) { n += score.Item3; sum += score.Item2 * score.Item3; } double mean = sum / n; // Compute the standard deviation. double ss = 0; foreach (var score in scores) { ss = Math.Pow(score.Item2 - mean, 2); } double sd = Math.Sqrt(ss/scores.Length); return Tuple.Create(scores.Length, mean, sd); } } // The example displays the following output: // Mean score: 87.02 (SD=0.96) (n=8)
open System let computeStatistics (scores: Tuple<string, double, int>[]) = let mutable n = 0 let mutable sum = 0. // Compute the mean. for score in scores do n <- n + score.Item3 sum <- sum + score.Item2 * double score.Item3 let mean = sum / double n // Compute the standard deviation. let mutable ss = 0. for score in scores do ss <- (score.Item2 - mean) ** 2. let sd = sqrt (ss / double scores.Length) Tuple.Create(scores.Length, mean, sd) let scores = [| Tuple.Create("Jack", 78.8, 8) Tuple.Create("Abbey", 92.1, 9) Tuple.Create("Dave", 88.3, 9) Tuple.Create("Sam", 91.7, 8) Tuple.Create("Ed", 71.2, 5) Tuple.Create("Penelope", 82.9, 8) Tuple.Create("Linda", 99.0, 9) Tuple.Create("Judith", 84.3, 9) |] let result = computeStatistics scores printfn $"Mean score: {result.Item2:N2} (SD={result.Item3:N2}) (n={result.Item1})" // The example displays the following output: // Mean score: 87.02 (SD=0.96) (n=8)
Module Example Public Sub Main() Dim scores() = { Tuple.Create("Jack", 78.8, 8), Tuple.Create("Abbey", 92.1, 9), Tuple.Create("Dave", 88.3, 9), Tuple.Create("Sam", 91.7, 8), Tuple.Create("Ed", 71.2, 5), Tuple.Create("Penelope", 82.9, 8), Tuple.Create("Linda", 99.0, 9), Tuple.Create("Judith", 84.3, 9) } Dim result = ComputeStatistics(scores) Console.WriteLine("Mean score: {0:N2} (SD={1:N2}) (n={2})", result.Item2, result.Item3, result.Item1) End Sub Private Function ComputeStatistics(scores() As Tuple(Of String, Double, Integer)) _ As Tuple(Of Integer, Double, Double) Dim n As Integer = 0 Dim sum As Double = 0 ' Compute the mean. For Each score In scores n+= score.Item3 sum += score.Item2 * score.Item3 Next Dim mean As Double = sum / n ' Compute the standard deviation. Dim ss As Double = 0 For Each score In scores ss = Math.Pow(score.Item2 - mean, 2) Next Dim sd As Double = Math.Sqrt(ss/scores.Length) Return Tuple.Create(scores.Length, mean, sd) End Function End Module ' The example displays the following output: ' Mean score: 87.02 (SD=0.96) (n=8)
To return multiple values from a method without the use of
out
parameters (in C#) orByRef
parameters (in Visual Basic). For example, the previous example returns its summary test score statistics in a Tuple<T1,T2,T3> object.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> object as the method argument, you can supply the thread's startup routine with three items of data.
Tuple<T1,T2,T3>(T1, T2, T3) |
Initializes a new instance of the Tuple<T1,T2,T3> class. |
Item1 |
Gets the value of the current Tuple<T1,T2,T3> object's first component. |
Item2 |
Gets the value of the current Tuple<T1,T2,T3> object's second component. |
Item3 |
Gets the value of the current Tuple<T1,T2,T3> object's third component. |
Equals(Object) |
Returns a value that indicates whether the current Tuple<T1,T2,T3> object is equal to a specified object. |
Get |
Returns the hash code for the current Tuple<T1,T2,T3> object. |
Get |
Gets the Type of the current instance. (Inherited from Object) |
Memberwise |
Creates a shallow copy of the current Object. (Inherited from Object) |
To |
Returns a string that represents the value of this Tuple<T1,T2,T3> instance. |
IComparable. |
Compares the current Tuple<T1,T2,T3> 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. |
IStructural |
Compares the current Tuple<T1,T2,T3> 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. |
IStructural |
Returns a value that indicates whether the current Tuple<T1,T2,T3> object is equal to a specified object based on a specified comparison method. |
IStructural |
Calculates the hash code for the current Tuple<T1,T2,T3> object by using a specified computation method. |
ITuple. |
Gets the value of the specified |
ITuple. |
Gets the number of elements in the |
Deconstruct<T1,T2,T3>(Tuple<T1,T2,T3>, T1, T2, T3) |
Deconstructs a tuple with 3 elements into separate variables. |
To |
Converts an instance of the |
Producto | Versiones |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1 |
UWP | 10.0 |
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