Overview of C# Performance Benchmarking Code

YieldVsListPerformanceComparison.cs

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

namespace YieldVsListPerformanceComparison
{
    public class Program
    {
        static void Main(string[] args)
        {
            BenchmarkRunner.Run<PerformanceBenchmarks>();
        }
    }

    public class PerformanceBenchmarks
    {
        private const int NumberOfElements = 10000;
        private List<int> precomputedNumbers;

        [GlobalSetup]
        public void InitializeBenchmark()
        {
            precomputedNumbers = new List<int>();
            for (var index = 0; index < NumberOfElements; index++)
            {
                precomputedNumbers.Add(index);
            }
        }

        [Benchmark]
        public void SquareNumbersUsingYield()
        {
            foreach (var number in GenerateNumbersUsingYield(NumberOfElements))
            {
                var squaredNumber = number * number;
            }
        }

        [Benchmark]
        public void SquareNumbersUsingList()
        {
            foreach (var number in precomputedNumbers)
            {
                var squaredNumber = number * number;
            }
        }

        private IEnumerable<int> GenerateNumbersUsingYield(int maximumValue)
        {
            for (int index = 0; index < maximumValue; index++)
            {
                yield return index;
            }
        }
    }
}