Aggregate allows you to specify a custom accumulation algorithm for implementing aggregations.
The following demonstrates how Aggregate can do the work of Sum:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
class Program
{
static void Main()
{
int[] numbers = { 2, 3, 4 };
int sum = numbers.Aggregate(0, (total, n) => total + n); // 9
Console.WriteLine(sum);
}
}
The output:
9