using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System;
using System.Collections.Generic;
using System.Linq;

namespace BenchmarkExample
{
    public class Program
    {
        static void Main(string[] args)
        {
            var summary = BenchmarkRunner.Run<BasketBenchmarks>();
        }
    }

    public class BasketItem
    {
        public decimal Price { get; set; }
    }

    public class BasketBenchmarks
    {
        private List<BasketItem> _baskets;

        [GlobalSetup]
        public void Setup()
        {
            _baskets = new List<BasketItem>();
            for (int i = 0; i < 1000; i++)
            {
                _baskets.Add(new BasketItem { Price = i });
            }
        }

        [Benchmark]
        public decimal ForeachSum()
        {
            decimal total = 0;
            foreach (var item in _baskets)
            {
                total += item.Price;
            }
            return total;
        }

        [Benchmark]
        public decimal LINQSum()
        {
            return _baskets.Sum(current => current.Price);
        }
    }
}