Linq101-Quantifiers

 using System;
 using System.Collections.Generic;
 using System.Linq;

 namespace Linq101
 {
     class Quantifiers
     {
         /// <summary>
         /// This sample uses Any to determine if any of the words in the array contain the substring 'ei'.
         /// </summary>
         public void Linq67()
         {
             string[] words = { "believe", "relief", "receipt", "field" };

             bool iAfterE = words.Any(w => w.Contains("ei"));

             Console.WriteLine("There is a word that contains in the list that contains 'ei': {0}", iAfterE);
         }

         /// <summary>
         /// This sample uses Any to return a grouped a list of products only for categories that have at least one product that is out of stock.
         /// </summary>
         public void Linq68()
         {
             List<Data.Product> products = Data.GetProductList();
             var productGroups = from p in products
                                 group p by p.Category
                                     into g
                                     where g.Any(p => p.UnitsInStock == )
                                     select new { Category = g.Key, Products = g };

             ObjectDumper.Write(productGroups, );
         }

         /// <summary>
         /// This sample uses All to determine whether an array contains only odd numbers.
         /// </summary>
         public void Linq69()
         {
             int[] numbers = { , , , , , ,  };

             bool onlyOdd = numbers.All(n => n %  == );

             Console.WriteLine("The list contains only odd numbers : {0}", onlyOdd);
         }

         /// <summary>
         /// This sample uses All to return a grouped a list of products only for categories that have all of their products in stock.
         /// </summary>
         public void Linq70()
         {
             List<Data.Product> products = Data.GetProductList();

             var productGroups = from p in products
                                 group p by p.Category
                                     into g
                                     where g.All(p => p.UnitsInStock > )
                                     select new { Category = g.Key, products = g };

             ObjectDumper.Write(productGroups, );
         }
     }
 }