Quantifiers

linq67: Any - Simple

//c#
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); 
}

linq69: Any - Grouped

//c#
public void Linq69() 
{ 
    List products = GetProductList(); 
    var productGroups = 
        from p in products 
        group p by p.Category into g 
        where g.Any(p => p.UnitsInStock == 0) 
        select new { Category = g.Key, Products = g }; 
 
    ObjectDumper.Write(productGroups, 1);  
}

linq70: All - Simple

//c#
public void Linq70() 
{  
    int[] numbers = { 1, 11, 3, 19, 41, 65, 19 }; 
  
    bool onlyOdd = numbers.All(n => n % 2 == 1); 
  
    Console.WriteLine("The list contains only odd numbers: {0}", onlyOdd); 
}

linq72: All - Grouped

//c#
public void Linq72() 
{ 
    List products = GetProductList(); 
  
    var productGroups = 
        from p in products 
        group p by p.Category into g 
        where g.All(p => p.UnitsInStock > 0) 
        select new { Category = g.Key, Products = g }; 
     
    ObjectDumper.Write(productGroups, 1); 
}