Represents a 4-tuple, or quadruple.
See Also: Tuple<T1,T2,T3,T4> Members
Syntax
Type Parameters
- T1
- Documentation for this section has not yet been entered.
- T2
- Documentation for this section has not yet been entered.
- T3
- Documentation for this section has not yet been entered.
- T4
- Documentation for this section has not yet been entered.
Remarks
A tuple is a data structure that has a specific number and sequence of values. The Tuple`4 class represents a 4-tuple, or quadruple, which is a tuple that has four components.
You can instantiate a Tuple`4 object by calling either the Tuple`4.#ctor(`0, `1, `2, `3) constructor or the static Tuple.Create``4(``0, ``1, ``2, ``3) method. You can retrieve the value of the tuple's components by using the read-only Tuple`4.Item1, Tuple`4.Item2, Tuple`4.Item3, and Tuple`4.Item4 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`4 objects that contain the names of baseball pitchers, the number of innings they pitched, and the number of earned runs (runs that scored without fielding errors), and hits that they gave up. The array is passed to the ComputeStatistics method, which calculates each pitcher's earned run average (the average number of runs given up in a nine-inning game), and the average number of hits given up per inning. The method also uses these two averages to compute a hypothetical effectiveness average.
code reference: System.Tuple`4.Class#1
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 name of the pitcher, in an array of Tuple`4 objects.
To pass multiple values to a method through a single parameter. For example, the System.Threading.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`4 object as the method argument, you can supply the thread’s startup routine with four items of data.
Requirements
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 4.0.0.0