The Aggregation operators return a scalar value; usually of numeric type:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
class Program
{
static void Main()
{
int[] numbers = { 10, 9, 8, 7, 6 };
int count = numbers.Count(); // 5;
Console.WriteLine(count);
int min = numbers.Min(); // 6;
Console.WriteLine(min);
}
}
The output:
5
6
The quantifiers return a bool value:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
class Program
{
static void Main()
{
int[] numbers = { 10, 9, 8, 7, 6 };
bool hasTheNumberNine = numbers.Contains(9); // true bool
bool hasMoreThanZeroElements = numbers.Any(); // true bool
bool hasAnOddElement = numbers.Any(n => n % 2 == 1); // true
}
}