Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> Class
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Represents an n-tuple, where n is 8 or greater.
generic <typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename TRest>
public ref class Tuple : IComparable, System::Collections::IStructuralComparable, System::Collections::IStructuralEquatable
generic <typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename TRest>
public ref class Tuple : IComparable, System::Collections::IStructuralComparable, System::Collections::IStructuralEquatable, System::Runtime::CompilerServices::ITuple
public class Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable
public class Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable, System.Runtime.CompilerServices.ITuple
[System.Serializable]
public class Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> : IComparable, System.Collections.IStructuralComparable, System.Collections.IStructuralEquatable
type Tuple<'T1, 'T2, 'T3, 'T4, 'T5, 'T6, 'T7, 'Rest> = class
interface IStructuralComparable
interface IStructuralEquatable
interface IComparable
type Tuple<'T1, 'T2, 'T3, 'T4, 'T5, 'T6, 'T7, 'Rest> = class
interface IStructuralComparable
interface IStructuralEquatable
interface IComparable
interface ITuple
[<System.Serializable>]
type Tuple<'T1, 'T2, 'T3, 'T4, 'T5, 'T6, 'T7, 'Rest> = class
interface IStructuralEquatable
interface IStructuralComparable
interface IComparable
[<System.Serializable>]
type Tuple<'T1, 'T2, 'T3, 'T4, 'T5, 'T6, 'T7, 'Rest> = class
interface IStructuralEquatable
interface IStructuralComparable
interface IComparable
interface ITuple
Public Class Tuple(Of T1, T2, T3, T4, T5, T6, T7, TRest)
Implements IComparable, IStructuralComparable, IStructuralEquatable
Public Class Tuple(Of T1, T2, T3, T4, T5, T6, T7, TRest)
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.
- T4
The type of the tuple's fourth component.
- T5
The type of the tuple's fifth component.
- T6
The type of the tuple's sixth component.
- T7
The type of the tuple's seventh component.
- TRest
Any generic Tuple
object that defines the types of the tuple's remaining components.
- Inheritance
-
Tuple<T1,T2,T3,T4,T5,T6,T7,TRest>
- Attributes
- Implements
A tuple is a data structure that has a specific number and sequence of values. The Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> class represents an n-tuple that has eight or more components.
You can instantiate a Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object with exactly eight components by calling the static Tuple.Create method. The following example creates an 8-tuple (octuple) that contains prime numbers that are less than 20. Note that it uses type inference to determine the type of each component.
var primes = Tuple.Create(2, 3, 5, 7, 11, 13, 17, 19);
Console.WriteLine("Prime numbers less than 20: " +
"{0}, {1}, {2}, {3}, {4}, {5}, {6}, and {7}",
primes.Item1, primes.Item2, primes.Item3,
primes.Item4, primes.Item5, primes.Item6,
primes.Item7, primes.Rest.Item1);
// The example displays the following output:
// Prime numbers less than 20: 2, 3, 5, 7, 11, 13, 17, and 19
open System
let primes = Tuple.Create(2, 3, 5, 7, 11, 13, 17, 19)
printfn $"Prime numbers less than 20: {primes.Item1}, {primes.Item2}, {primes.Item3}, {primes.Item4}, {primes.Item5}, {primes.Item6}, {primes.Item7}, and {primes.Rest.Item1}"
// Prime numbers less than 20: 2, 3, 5, 7, 11, 13, 17, and 19
Dim primes = Tuple.Create(2, 3, 5, 7, 11, 13, 17, 19)
Console.WriteLine("Prime numbers less than 20: " +
"{0}, {1}, {2}, {3}, {4}, {5}, {6}, and {7}",
primes.Item1, primes.Item2, primes.Item3,
primes.Item4, primes.Item5, primes.Item6,
primes.Item7, primes.Rest.Item1)
' The example displays the following output:
' Prime numbers less than 20: 2, 3, 5, 7, 11, 13, 17, and 19
You can also instantiate an n-tuple object with eight or more components by calling the Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> constructor. The following example uses the Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> constructor to create an 8-tuple that is equivalent to the tuple created in the previous example.
var primes = new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32,
Tuple<Int32>> (2, 3, 5, 7, 11, 13, 17, new Tuple<Int32>(19));
let primes = new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32,
Tuple<Int32>> (2, 3, 5, 7, 11, 13, 17, new Tuple<Int32>(19))
Dim primes = New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, _
Tuple(Of Int32))(2, 3, 5, 7, 11, 13, 17, New Tuple(Of Int32)(19))
注意
To create an n-tuple with nine or more components, you must call the Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> constructor. The static factory methods of the Tuple class do not support the creation of Tuple
objects with more than eight components.
To instantiate an n-tuple that has eight or more components with the Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> constructor, you supply a generic Tuple
object as the rest
parameter to define the eighth through nth components of the tuple. By nesting generic Tuple
objects in this way, you can create a tuple that has no practical limitation on the number of its components.
The following example creates a 17-tuple that contains population data for the city of Detroit, Michigan, for each national census from 1860 to 2000. The first component of the tuple is the city name. The second component is the start date of the data series, and the third component is the population at the start date. Each subsequent component provides the population at decade intervals. The 17-tuple is created by nesting a Tuple<T1,T2,T3> object inside a Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object. (That is, the Tuple<T1,T2,T3> object is supplied as the value of the rest
parameter in the Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> class constructor.) This Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object is, in turn, nested in an outer Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object. (That is, the Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object is supplied as the value of the rest
parameter in the outer Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's class constructor.)
var from1980 = Tuple.Create(1203339, 1027974, 951270);
var from1910 = new Tuple<int, int, int, int, int, int, int, Tuple<int, int, int>>
(465766, 993078, 1568622, 1623452, 1849568, 1670144, 1511462, from1980);
var population = new Tuple<string, int, int, int, int, int, int,
Tuple<int, int, int, int, int, int, int, Tuple<int, int, int>>>
("Detroit", 1860, 45619, 79577, 116340, 205876, 285704, from1910);
let from1980 = Tuple.Create(1203339, 1027974, 951270)
let from1910 = new Tuple<int, int, int, int, int, int, int, Tuple<int, int, int>>(465766, 993078, 1568622, 1623452, 1849568, 1670144, 1511462, from1980)
let population = new Tuple<string, int, int, int, int, int, int, Tuple<int, int, int, int, int, int, int, Tuple<int, int, int>>>("Detroit", 1860, 45619, 79577, 116340, 205876, 285704, from1910)
Dim from1980 = Tuple.Create(1203339, 1027974, 951270)
Dim from1910 As New Tuple(Of Integer, Integer, Integer, Integer, Integer, Integer, Integer, _
Tuple(Of Integer, Integer, Integer)) _
(465766, 993078, 1568622, 1623452, 1849568, 1670144, 1511462, from1980)
Dim population As New Tuple(Of String, Integer, Integer, Integer, Integer, Integer, Integer, _
Tuple(Of Integer, Integer, Integer, Integer, Integer, Integer, Integer, Tuple(Of Integer, Integer, Integer))) _
("Detroit", 1860, 45619, 79577, 116340, 205876, 285704, from1910)
You can retrieve the value of the tuple's first seven components by using the read-only Item1, Item2, Item3, Item4, Item5, Item6, and Item7 instance properties. Any additional components are nested and can be retrieved from the Rest property. In the previous example, the Item1 through Item7 properties retrieve the first through seventh components of the tuple. The eighth through fourteenth components are contained in the tuple that is nested at the second level, and are represented by the Rest.Item1
through Rest.Item7
properties. The fifteenth through seventeenth components are contained in the tuple that is nested at the third level, and are represented by the Rest.Rest.Item1
though Rest.Rest.Item3
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.
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 computed statistics, along with the city name, in a Tuple<T1,T2,T3,T4,T5,T6,T7> 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,T4,T5,T6,T7> object as the method argument, you can supply the thread's startup routine with seven items of data.
Tuple<T1,T2,T3,T4,T5,T6,T7,TRest>(T1, T2, T3, T4, T5, T6, T7, TRest) |
Initializes a new instance of the Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> class. |
Item1 |
Gets the value of the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's first component. |
Item2 |
Gets the value of the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's second component. |
Item3 |
Gets the value of the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's third component. |
Item4 |
Gets the value of the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's fourth component. |
Item5 |
Gets the value of the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's fifth component. |
Item6 |
Gets the value of the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's sixth component. |
Item7 |
Gets the value of the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's seventh component. |
Rest |
Gets the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object's remaining components. |
Equals(Object) |
Returns a value that indicates whether the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> object is equal to a specified object. |
Get |
Calculates the hash code for the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> 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,T4,T5,T6,T7,TRest> instance. |
IComparable. |
Compares the current Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> 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,T4,T5,T6,T7,TRest> 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,T4,T5,T6,T7,TRest> 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,T4,T5,T6,T7,TRest> object by using a specified computation method. |
ITuple. |
Gets the value of the specified |
ITuple. |
Gets the number of elements in the |
產品 | 版本 |
---|---|
.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 |