How to get First Element of the ValueTuple in C#?
ValueTuple is a structure introduced in C# 7.0 which represents the value type Tuple. It allows you to store a data set which contains multiple values that may or may not be related to each other. Item1 Property is used to get the first unnamed element of the given value tuple. It is applicable on every value tuple like 1-ValueTuple, 2-ValueTuple, and so on.
Syntax:
public T1 Item1;
Here, T1 is the field value of a ValueTuple<> structure. This ValueTuple<> can be 1-ValueTuple, or 2-ValueTuple, or 3-ValueTuple, or 4-ValueTuple, or 5-ValueTuple, or 6-ValueTuple, or 7-ValueTuple, or 8-ValueTuple.
Example: In the below code, you can see that we are accessing the first element of each value tuple.
// C# program to illustrate how to get // the first element of value tuple using System; class GFG { // Main Method static public void Main() { // Creating a value tuple with one element var ValTpl1 = ValueTuple.Create( "Variables" ); Console.WriteLine( "C# Topics: " ); // Accessing the first element // of 1-ValueTuple using the // Item property Console.WriteLine(ValTpl1.Item1); // Creating a value tuple // with two elements var ValTpl2 = ValueTuple.Create( "Array" , "String" ); // Accessing the first element of // 2-ValueTuple using Item property Console.WriteLine(ValTpl2.Item1); // Creating a value tuple // with three elements var ValTpl3 = ValueTuple.Create( "ArrayList" , "List" , "Queue" ); // Accessing the first element of // 3-ValueTuple using Item property Console.WriteLine(ValTpl3.Item1); // Creating a value tuple // with four elements var ValTpl4 = ValueTuple.Create( "Stack" , "Dictionary" , "LinkedList" , "Interface" ); // Accessing the first element of // 4-ValueTuple using Item property Console.WriteLine(ValTpl4.Item1); // Creating a value tuple with five elements var ValTpl5 = ValueTuple.Create( "Identifiers" , "Data Types" , "Keywords" , "Access Modifiers" , "Operators" ); // Accessing the first element of // 5-ValueTuple using Item property Console.WriteLine(ValTpl5.Item1); // Creating a value tuple with six elements var ValTpl6 = ValueTuple.Create( "Nullable Types" , "Class" , "Structure" , "Indexers" , "Switch Statement" , "Loops" ); // Accessing the first element of // 6-ValueTuple using Item property Console.WriteLine(ValTpl6.Item1); // Creating a value tuple with seven elements var ValTpl7 = ValueTuple.Create( "Inheritance " , "Constructors" , "Encapsulation" , "Abstraction" , "Static Class" , "Partial Classes" , "this keyword" ); // Accessing the first element of // 7-ValueTuple using Item property Console.WriteLine(ValTpl7.Item1); // Creating a value tuple with eight elements var ValTpl8 = ValueTuple.Create( "Methods" , "Method Hiding" , "Optional Parameters" , "Anonymous Method" , "Partial Methods" , "Local Function" , "Delegates" , "Destructors" ); // Accessing the first element of // 8-ValueTuple using Item property Console.WriteLine(ValTpl8.Item1); } } |
Output:
C# Topics: Variables Array ArrayList Stack Identifiers Nullable Types Inheritance Methods
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