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What are lambda expressions in C#?
A lambda expression in C# describes a pattern. It has the token => in an expression context. This is read as “goes to” operator and used when a lambda expression is declared.
The following is an example showing how to use lambda expressions in C# −
Example
using System;
using System.Collections.Generic;
class Demo {
static void Main() {
List<int> list = new List<int>() { 21, 17, 40, 11, 9 };
int res = list.FindIndex(x => x % 2 == 0);
Console.WriteLine("Index: "+res);
}
}Output
Index: 2
Above, we saw the usage of “goes to” operator to find the index of the even number −
list.FindIndex(x => x % 2 == 0);
The above example gives the following output.
Index: 2
Even number is at index 2 i.e. it is the 3rd element.
Updated on: 20-Jun-2020
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