Tuple<T1, T2, T3, T4, T5, T6, T7, TRest> Class
Represents an n-tuple, where n is 8 or greater.
Assembly: mscorlib (in mscorlib.dll)
generic<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename TRest> [SerializableAttribute] public ref class Tuple : IStructuralEquatable, IStructuralComparable, IComparable
The type of the tuple's first component.
The type of the tuple's second component.
The type of the tuple's third component.
The type of the tuple's fourth component.
The type of the tuple's fifth component.
The type of the tuple's sixth component.
The type of the tuple's seventh component.
Any generic Tuple object that defines the types of the tuple's remaining components.
|Tuple<T1, T2, T3, T4, T5, T6, T7, TRest>(T1, T2, T3, T4, T5, T6, T7, TRest)|
Initializes a new instance of theclass.
Gets the value of the currentobject's first component.
Gets the value of the currentobject's second component.
Gets the value of the currentobject's third component.
Gets the value of the currentobject's fourth component.
Gets the value of the currentobject's fifth component.
Gets the value of the currentobject's sixth component.
Gets the value of the currentobject's seventh component.
Gets the currentobject's remaining components.
Returns a value that indicates whether the current Object::Equals(Object^).)object is equal to a specified object.(Overrides
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)
Calculates the hash code for the current Object::GetHashCode().)object.(Overrides
Returns a string that represents the value of this Object::ToString().)instance.(Overrides
Compares the currentobject 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.
Returns a value that indicates whether the currentobject is equal to a specified object based on a specified comparison method.
Calculates the hash code for the currentobject by using a specified computation method.
Compares the currentobject 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.
A tuple is a data structure that has a specific number and sequence of values. Theclass represents an n-tuple that has eight or more components.
You can instantiate a Tuple::Create<T1, T2, T3, T4, T5, T6, T7, T8> 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.object with exactly eight components by calling the static
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.
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 object. (That is, the Tuple<T1, T2, T3> object is supplied as the value of the rest parameter in the class constructor.) This object is, in turn, nested in an outer object. (That is, the object is supplied as the value of the rest parameter in the outer object's class constructor.)
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#) or ByRef 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.
Available since 8
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 4.0
Windows Phone Silverlight
Available since 8.0
Available since 8.1
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.