Lazy evaluation

Lazy evaluation in C# is a functional programming technique that postpones the evaluation of an expression or computation until the result is needed. Instead of immediately computing the value of an expression when it is defined, lazy evaluation allows the value to be computed only when it is requested for the first time. This can improve performance and reduce unnecessary computations, especially for expensive or time-consuming operations.

In C#, lazy evaluation is commonly achieved using the Lazy<T> class, which is part of the .NET Framework. The Lazy<T> class allows us to defer the execution of a computation and ensures that the computation is executed only once, no matter how many times the value is accessed.

Here’s an example of lazy evaluation in C# using Lazy<T>:

using System;public class Example
{
    private static Lazy<int> lazyValue = new Lazy<int>(() => ComputeValue());
   ...