Aggregate

In this chapter you will learn:

How to use Aggregate operator
Use Aggregate to calculate product
Use Aggregate on an array with tenary operator

Get to know Aggregate

Aggregate accepts custom accumulation algorithm for implementing aggregations.

The following demonstrates how Aggregate can do the work of Sum:

using System;// j  ava2s  .  c o m
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;


public class MainClass{

   public static void Main(string[] args){   
         int[] intArray = { 1, 2, 3, 4, 5 };

         var result =intArray.Aggregate((ThisElement, Next) => ThisElement + Next);

         Console.WriteLine(result);
   }
}

Aggregate with product

using System;//  j a va 2  s. c  o m
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Linq;

public class MainClass {
    public static void Main() {
        int[] numbers = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        var query = numbers.Aggregate((a, b) => a * b);
    }
}

Aggregate with tenary operator

using System;//  j  a v  a  2 s .  c o  m
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Linq;

public class MainClass{
   public static void Main(){
       int[] numbers = { 9, 3, 5, 4, 2, 6, 7, 1, 8 };
       var query = numbers.Aggregate(5, (a,b) => ( (a < b) ? (a * b) : a));
    }
}

Next chapter...

What you will learn in the next chapter:

How to use seeded aggregations